Guesstimating Climb time from power

If you have access to a power measure and are planning a ride involving lots of climbing or if you just want to measure yourself up against the pros then this application may be of interest.

http://bikecalculator.com/index.html


By plugging in some basic info about yourself and the climb it comes with an estimate of the time to climb. I have found it to be remarkably accurate. 

By way of illustration the table below shows some numbers for a variety of different riders on the principal climbs used on the Marmotte. (The "pro" is David Lopez, data from the 2013 TDF stage where they climbed the Alpe twice, shows the difference between "tempo" and taking it "easy")

The difference between actual and calculated is small. Even where they are "wrong", on the Glandon, it illustrates an interesting point. This climb as a vicious little V valley midway up that will slows you up. It is also the first climb in the event so it gets congested and time is lost working your way through the field. Those going faster and/or starting at the front suffer less from this.

Rider	Kg	Climb	Distance	Gradient	Power	Act Time	Calc Time	Difference
Pro	67	Alpe D'Huez	13	8	360	45	43	2
Pro	67	Alpe D'Huez	13	8	288	55	52	3
RiderA	74	Alpe D'Huez	13	8	313	54	52	2
RiderB	71	Alpe D'Huez	13	8	222	70	69	1
RiderC	70	Alpe D'Huez	13	8	247	64	65	-1
RiderD	70	Alpe D'Huez	13	8	263	58	59	-1
RiderA	74	Galibier	18	6.6	306	66	65	1
RiderB	71	Galibier	18	6.6	224	84	81	3
RiderC	70	Galibier	18	6.6	223	82	81	1
RiderD	70	Galibier	18	6.6	241	74	75	-1
RiderA	74	Glandon	23	4.8	331	64	62	2
RiderB	71	Glandon	23	4.8	254	83	74	9
RiderC	70	Glandon	22	4.8	274	74	69	5
RiderD	70	Glandon	23	4.8	245	81	75	6
RiderA	74	Telegraph	12	6.9	335	40	41	-1
RiderB	71	Telegraph	12	6.9	250	50	51	-1
RiderC	70	Telegraph	12	6.9	259	50	49	1
RiderD	70	Telegraph	12	6.9	241	48	52	-4

Criss Cross Progression

Did third criss-cross of 2015 yesterday and showed some nice progression

Ride here 
https://app.strava.com/activities/249537733/overview

Cut the rest interval and extended the work ones, especially the last so that it took just over 60 minutes. For focus I concentrated on the calves, really pushing through to the bottom of the stroke and "scraping the mud off the cleats". I expected at some point they would burn but didn't even on the overs, upper leg gave the biggest pain. Will push them even harder next time.


Comparing to first one

Latest session
Interval Time  9:25 (last 13:15)
Interval Power 283W/328W avg 300W
Hour stats: 279W/290NW HR avg 152bpm HR peak 161bpm

First session
Interval time 9:11
Interval power 280W/325W avg 294W
Hour stats 259W/278NW HR avg 152bpm HR peak 168bpm

So power up and HR down, latter reflected in fact that latest session felt easiest yet. Average power for the workout was enough for a sub 60 minute ascent of Alpe D'Huez.

 

CrissCross - favourite turbo workout

Over the course of the last 10 year or so I've tried lots of different workouts. There is one that stands out, both because it works and is enjoyable to do. It's especially good for turbo sessions and I would recommend everybody try it out.

This is the "crisscross" or OU workout. See here for a basic guide http://home.trainingpeaks.com/blog/article/3-top-indoor-cycling-workouts-under-1-hour



There are a number of reasons why it's excellent:

• It's at threshold. There is no getting away from the fact that if you want to improve your power you need to spend time in this zone. The standard workout for this is "2x20" or variant that requires you to hold threshold power steady for an extended period of time. When done on a turbo I find these pretty mind numbing. This workout is more fun since it breaks the long interval down into more manageable "very hard"/"slightly less hard" chunks. In terms of the end result the average power/training benefit will be the same.
• It's very time efficient. In terms of training stress/minute or calories burned/minute it's amongst the highest. Because the first part is slightly under threshold you can get away with a short warmup (or even skip warmup altogether and do the first 2 minutes as a fast ramp up to threshold. The first 5-6 minutes will feel very tough but by the end of the first interval you should feel normal). Also if pushed for time you can cut recovery, the description recommends 4 minutes, I find 3 is more than enough.
• It's good race preparation.  The article mentions one, working in a small race group, but that's not the only example there are others. In the real world any course  will have some bits that are tougher than others. The best way to pace these once they start requiring 20 minutes or so+ of effort  is go a bit harder on the hard bits and a bit easier on the less hard bits. In the case of TTs the reason for this is basic physics, for long climbs its better not to change gear every time the gradient shifts since this wastes  power.Also starting slightly under threshold is not a bad idea for events 20 minutes and up. You are unlikely to win them during the first 60 seconds but may lose them if you go off too hard and have nothing left for the hard bits/end.
• It's good mental training. Since it's more like real life its possible to imagine doing a real ride. If there is a particular course, e.g, a 10TT then you can set the O/U to correspond to its contours. 
• Also the U sectors will feel, comparatively, easy. This helps with pacing as you can push harder for a bit if you know you will have a bit of a "rest" shortly. Having this in mind is also handy for the inevitable occasion when you pop during a threshold effort. If you can fall back to an effort that's still comparatively  high then you finish better than if you crash right down to your endurance pace. You can see this happen on long climbs when some riders apparently drop off  but then claw back and rejoin.
• It's hugely adaptable. You make lots of tweaks to keep the sessions varied/interesting and/or extend the area being changed. Just some e.g.s
• > Make the U lower (around top of Temp) and the O higher (well above threshold).This really will feel like being in a tiny group trying to get to the finish ahead of the pelaton.
• > Make U high sweetspot and O low threshold and increase the length of each work interval and reduce/eliminate  rest. Eventually it's possible to do a full 60 minutes this way, I have found this to be the "easiest" way to do a sol one hour at close to FTP. 
•  > Make some of the Os much higher than the others and imagine you are in a race. The first could be first is trying to get a gap with a couple of others then hold it. The last is the final effort to hit the finish first. 
• You can use the different sections to work on other things as well. E.g. varying cadence. One set can be done by keeping cadence constant and increasing resistance. The next vice versa. Or start the first section at 50rpm then increase 5 rpm each time until you max out. Or try getting the extra power for the Os through a specific muscle group, e.g. push harder with your glutes or concentrate on "scraping the mud of your soles" a la Some combinations may feel more comfortable than others, which ones may surprise you. Even if not just doing this will  make the time pass quicker.

 As an example here is a recent example. The main session consists of 5x9 minutes criss-cross. Power ranged from 90% under 105% over, so not too extreme as main objective was just to accumulate threshold time and set a benchmark for the future. I'll include a session like this each week, firstly increasing to 5x12minutes then reducing recovery with target being non-stop 60 minutes.

The first set of 3 was done increasing power by increasing cadence, then a second set of 2 keeping cadence more constant and varying resistance (which felt easier). Interestingly the HR for each set shows how each U has a bit of recovery following it being pushed up by the O. Quite apart from anything else this gives a handy check of my current FTP guesstimate. 

https://app.strava.com/activities/243530337/analysis/1574/5150

 

And now the good news

It's the last day of 2013. Time for a bit of reflection and the BBC web site is full of reviews of the year. 

One is here The Year in Numbers 

First bullet is a real good news story and one that flies in the face of the torrent of horror stories/depression/cynicism that forms the bulk of most comment for most of the time.

When asked how happy they were, on a scale of 1-10, the average Briton rated themselves 7.3. Only 10% rated themselves 4 or less.

I'd say this was pretty much the best news of 2013 and a fitting way to end it. 

(FWIW, I wasn't asked but had I been I think I'd score a 9)



 

No food needed

I've got to the point in my training plan where I am starting to do some long “sweetspot” workouts as described by Hunter Allen here,.http://www.hunterallenpowerblog.com/2013/11/four-keys-to-powerful-winter-training.html?utm_source=November+2013+Power+News&utm_campaign=November+Power+News&utm_medium=email

I thought I would use these to take the opportunity to check my previously stated assertion that you don't need to take any calories in the form of sports nutrition for workouts less than 2 hours long, moreover doing so will often be a mistake. (You do ofc need to drink, but water is fine)

So yesterday I did a 2+ hour workout comprising a warmup, 90 minutes of sweetspot at around 90% FTP and a warmdown.

I had some porridge for breakfast around 2 hours beforehand and during the workout nibbled one apple just to keep my mouth fresh and not have an entirely empty stomach. I drank around 2l of water.

Stats for the workout were:

Warmup 30 mins averaging 205W (bit longer than planned due to some setup issues)

Sweetspot 90 minutes averaging 268W/153bpm (FTP c 300W atm, HR@ FTP 166bpm) so spot on in terms of target power and HR zone

Warmdown 20 minutes averaging180W

The sweetspot session was reasonably intense, equating to just over 1.5 climbs of Alpe D'Huez at 57minute pace.

Looking at energy use the total for the ride was just over 2000kj=pretty much same kcal. ( Using the results of a recent ramp test I can guesstimate roughly 1500kcal of this came from carbohydrate mostly glycogen with around 80kcal for the apple and maybe a bit from the porridge.)

This is not just an n=1 example. Some aspects of the workout are, I would argue, broadly applicable to most riders regarding the question of whether and how much needs to be eaten during a workout in order to achieve a workout goal.

Reason for this is that most folks should have ample stores of glycogen to fuel such efforts, easily enough to do a 1-2 hour session at a quite strenuous level. Maths are that it is usual to have around 400-500g of glycogen are available for use, 1G of glycogen = 4kcal. So immediately, for a 2 hour session you need to be doing a workout burning more than 800kcal per hour which is pretty tough (Note these are real calories as measured by a powermeter or similar, not the inflated figures some products produce to make their consumers feel good). Further, not every kcal burned will come from glycogen. Some will come from food in the process of being digested, some from fat. Fat only contributes a significant proportion at low intensities but still even the hardest of most workouts will include times of low intensity.

Taking all this into consideration bottom line you need to be capable of and actually do around 280W+ non-stop for a full 2 hours before you need to worry about feeding to accomplish a training objective for short <2 hour="" span="" workouts.="">

If you are not doing sessions as hard as this

• If weight loss/control is one of your objectives I would absolutely recommend not taking in any significant calories during such workouts. Sports “nutrition” is mainly just junk food in the form of sugar. The calorie deficit short hard workouts produce will be far better filled by larger portions good healthy balanced meals at normal mealtimes that will stop you feeling hungry and/or allowing yourself a treat or two to make dieting more tolerable.
• If weight loss/control is not an issue. I would still advise not using any sports products as a default. Rather do without for a bit then, perhaps, introduce some in a controlled manner to see if they actually do for you what they claim on the label. Alternatively they can be an option if you hit a plateau level where you cannot improve when you can try using something to see if it helps. It may (though chances are reason will be as much psychological as physiological) in which case great, but then I'd advise weaning yourself off it to reserve for the next training plateau or as a boost for race use.

Weekly Summary 31/10/13

i'll start publishing some summary figures for my training weeks from now on. 

First below.

Week ending	31/Oct
Weight	150.0
Fat	14.0
Cal Balance	-1131
End Watts	198
End Time	03:46
End Drift	3.23%
Tempo Watts	266
Tempo Time	23:40
Tempo Drift	2.48%
Tempo HR	148
Thresh Watts	282
Thresh HR	158
Short Watts	None
Short HR	None

Comments

• Cal balance is total calorie deficit for the week. So last week I actually ate a bit more than I used up.
• Watts are the best recorded of the sessions for the week. All are a bit low at the moment as it's early days in the training season. HR ditto. Plan is that all should increase slowly but steadily over time
• Drift in the Endurance and Tempo columns is a measure of how much HR has increased over the interval. Target for Endurance is 5%

Endurance Workout

Just completed an endurance workout and thought I'd review it since it covers a lot of training points. There are quite a lot, which might seem a bit like overkill, but in practice I don't stress over most of the stuff here, most has become habit and adds very little in terms of time needed over and above that needed for the cycling itself.

Objectives: I'm a believer in making a effort to get as much out of workouts as possible, over and above the basic ones of improving fitness and, hopefully, enjoying the exercise. 

This applies double to endurance workouts which, by their nature, can be a long old slog.I find having a number of things to think about helps complete them.

So this workout I had the following aims:

• Develop endurance using result from recent tests to set zones.
• Measure current state of endurance fitness
• Gather some baseline data for later simulations of long distance TTs
• Work towards a self test for measuring glycogen levels
• Monitor fluid levels needed 
• Increase cadence, get out of 7x rpm comfort zone and see what 80+ rpm feels like
• Burn lots of calories
• Listen to some old favourites (via Spotify)

Workout The workout was just a bit short of 4 hours and was done on my turbo. This may sound a bit tough but I much prefer to going out on the roads at this time of the year. It consists of 3 "hills" each an hour long going from start of endurance zone to just nudge lactate threshold then a final 45 minutes of a couple of shorter "hills".

I had a breakfast bowl of porridge an hour or so before starting but only ate couple of tangerines during the workout itself.

Results Power data is below 

There are a number of points most of which I was very happy with.

• Average power was just short of 200W with a slight negative split which is pretty smack middle of my endurance zone
• Average HR was nice and low at only 128bpm with a max of 145 near the end
• HR tracked power very closely with very little drift, only 3.4%
• Cadence was on target an average of 84rpm. This actually felt very comfortable and probably felt easier than previous efforts in the 70s.
• Ride felt comfortable up to the very close to end, final "hill" felt a bit tough.
• kJ was 2600, breaking this down (using data from test a couple of weeks ago) I'd guesstimate I burned around 2400kcal made up of roughly 90g of fat and 400g of carbs. This may explain the tough end as I was probably running my glycogen levels quite low and my body was warning me of this
• I drank 4.25l of water. I weighed around 500g less at the start of the ride compared to the beginning so this amount of water was probably just about spot on.  
• I reminded myself just what a great band Black Label Society are.

 Future plans I'll extend this workout to around 4 hours then up the power bit by bit (by increasing the "valleys") to move average power up towards my lactate threshold level of 225W. This will provide useful info for a 12 as this will be my target wattage for that ride. 

I'll then push it further with the aim of hitting an average of 240-250W which is top of my endurance zone and the power I'll need to improve my 100 time. 

At some point I expect my HR drift will increase to past 5% which is a fair indicator of when I am straying out of my pure endurance zone. It will be interesting to see how this then changes, in theory if I get fitter it should come down.

I'll continue to do the workouts on no food and at some point I guess I will  bonk. This won't be much fun but should give me some steer on my glycogen levels. Once I've hit this I'll start to eat just to check if this sorts things out and to give some indication of what level of feeding will be needed on "real" rides.

Cadence felt good at 80rpm+, so I'll make that a goal for all future rides of this nature.

Power -3 pronged approach

My approach for improving power is three pronged.

• On bike training, the first phase of which I covered in my last post
• Working on riding better, in particular pedalling more efficiently and descending 
• Core and strength work to improve general fitness and help with both the above.

• In the next few posts I'll cover the latter two in a bit more detail.

It's a kinda magic

On another subject, we went to a magic show last night, first one in ages.

It was courtesy of Morgan and West Time Travelling Magicians    and it was utterly superb.

Magic is one of those things you have to really see live to fully appreciate. You know it's all tricks but simply can't figure out how it's done.

The delivery matters a lot of course, not only to make the tricks work but as part of the entertainment and this was one of Morgan and West's many strengths. Their patter was razor sharp and very funny. 

Show took place at the New Greenham Arts Centre and was full to overflowing. Nice aspect was that, literally, the audience had a full helping of folks from all ages, lots of children their along with quite a few parents and grand parents. We were integral to the show with most of the tricks involving the participation of a least one of us but this was done in a fun way and not even the most timid of folks looked embarrassed. 

Pick of the tricks for me was the "travelling cards" that somehow made their way from one side of the stage to the other, a close follow up being the "mystery biscuit" routine where one of the audience not only had her favourite cookies divined but got given a packet of them as well.

Also mention has to be made of "Hobbit the Rabbit" who survived a harrowing process of natural selection to become a much loved pet, along with personalised medal.

Very highly recommended, if Morgan and West are playing anywhere nearby go and see them, stupefaction guaranteed. 

Knocked Knees

I paid a return visit to Cycefit recently to get properly fitted for my TT bike, with a view to training in this position over winter, hopefully with a result that the gap between my TT power and climbing power will narrow from its current level of around 30W.

It proved to be very worthwhile and I ended up with a position I felt a lot more comfortable in.

I also got a bit of a shock. The assessment included a front on view of my pedalling action, highlighted by the use of a couple of lasers. My knees were noticeably off plane, both being too close to the top tube, the right knee especially so. 
 
A radical change to the wedges on my shoes helped improve matters. My left leg is pretty much sorted. My right is still away from perfect but is probably as good as it will get given my genes combined with the effect of the injuries I sustained 

Good news is I have the winter to sort out not only my TT position but my slightly knocked knees 

 

3 on, 3 off and a rest day

So far I have been concentrating on losing weight and it's gone pretty well. I've managed a couple of milestones, my low of 67.3kg is an all time best and I've consistently been under 70kg/11 stone which had been a bit of a bit of a blocker in the past.

Now I've scheduled a change, mainly for a bit of variety. I'll continue with the  endurance sessions that have helped shed the pounds but will mix them up with some higher intensity workouts as well 

Each week I would hope to do:

• 3 x Endurance Sessions: These will be main calorie burners. Currently they are just over 3 hours at around 200W.  I'll eat normally beforehand but during them only take on water, then eat normally afterwards. I have no problem completing these at the moment. I'll extend them to 4 hours at the same power then slowly increase watts. My hope is to get to around 240W which is pretty close to power needed for a 4 hour 100. At some point I'm guessing I will need to eat during these sessions which should give me some indication of how my glycogen levels are. 
• 1 x Tempo Session: This is a slow ramp up to tempo level then hold for a longish interval, take a 5 minute break then a second interval. I'll use HR to pace this one, starting with 20 minute intervals and adjusting power until my HR hits 151 which is the bottom of my tempo zone. Once I have established the power I'll extend the interval times, hoping eventually to hit 2x60 minutes.
• 1 x Threshold Session: I'll use Chris Boardman's routine for this. It comprises a set of 15>12>10>8 intervals at threshold with 5 minutes rest between each. It's "easier" than the classic 2x20 but mainly on the mind, you still get a good chunk of time at threshold and if it's good enough for Boardman it's good enough for me. I'll start these at an easy wattage then nudge up each week until I can't complete. While doing these I'll include some of Bradley Wiggins' pedal routines. This involves doing repeats of 1 minute 50 rpm, 4 minutes "normal" rpm. 
• 1 x Short Interval Session: Another Chris Boardman routine, 3 x 3 minutes threshold++ then 3x2 minutes threshold++ with 7-10 minutes between each interval. Again I'll start low in terms of power and nudge the wattage up a little each week.
• 1 x Recovery Session: In the past I haven't felt the need for much in terms of recovery so I'll just have the one session a week to start. The 3 sessions above will help me judge how I am doing and if I feel rough I'll schedule in some more recovery time. I don't plan to take the recovery day fully off, I have an idea for a "CO2 threshold" test that involves doing an easy routine so I'll do that.

VO2, MLSS, MHR, peak power

The other measures from the tests I undertook were all about peak efforts.

My "MLSS" was 300W, 4.48w/kg, 166bpm
VO2 was 62.8

Max HR was 180rpm

Power at VO2 max was 375W 
Power/weight at VO2 max was 5.59 W/kg

The protocol to get these values was 

• Start at 150W
• Increase 25W every 3 minutes until MLSS
• Then increase 25W per minute until crack

The results don't come as a big surprise. I have not been doing any top end work recently so they are all a bit low, apart from max HR which is higher than I expected. 

The VO2 is a bit lower than my last test in 2006 when it measured 63.9 (and I was a bit heavier)

All should get better once I up intensity and lose a few more pounds. 
 
 
  

Lactate Threshold - another surprise

One outcome of the recent test I did was to find out my "lactate threshold".

I thought I knew what this meant but in fact I've been wrong all these years. My believed this was the same as my "threshold power" but in fact its much lower. 

Wiki explains all here

So the lactate threshold occurs quite early on as you ramp up power. For me it occurred at 225W/133bpm. 

This point coincides with the point where you need to start breathing through your mouth so is quite easy to monitor. 
 

Cycling Efficiency

The physiological assessment I undertook recently measured my "Cycling Efficiency".

This is a figure representing how much oxygen is required to generate power. It is measured in ml/min (of oxygen) per watt. 

The lower the figure the better.

Mine was around 11.3 at 200W (my power just before lactate threshold). 

This is rated as typical for club athletes, for pros it will be below 10.

Since this is the first time I have had this test not sure about how this will change with training. Will be interesting to see what happens.

Fuel from Fat

I recently took some physiological tests to measure my fitness. My intention is to redo these next year and hopefully see some changes as a result  of my training.

I'llg/ do some write ups on these to serve as a reference for the future, starting with the one that surprised me the most.

This was the one that showed where I was getting the energy to cycle from. This will always be a mixture of fat and carbohydrate,  with a greater proportion of fat at lower intensities,  carbohydrates taking over as intensity increases to provide pretty much 100% at peak levels.

The table below shows the results at the key transition point when carbs take over from fat.


Watts             CHO g/h        Fat g/h      CHO kcal/h  Fat kcal/h Total kcal/h     Calc kcal/h
150                   46                 45              188             417              667                540
175                   113               15               465            139              665                630
200                   100               17               410            154              621                720
225                   114               25               470             235             776                810

There are a couple of interesting things in these figures

• The transition from fat burning at 150W to carb burning at 175
• 150-200W consumes the same amount of calories, showing how rough the rule of thumb that calories = kJ is (the last column shows the KJ figure)

  

Goodbye Mr Fox

Our daughter Katy has spent the past few years living in London, firstly studying and more recently working. 

So we have made quite a number of trips to see her over this time and I have noticed two very nice happenings.

• The number of cyclists on London's roads has exploded.Whereas you may see the occasional chap on a bike taking his life in his hands now you see hundreds of them (and just as many chapesses as well). Bikes have become really cool and you see all manner or weird and wonderful machines on the road now. 
• Craft beer has hit the UK. I was sort of in on the beginning of this, having been a long term fan of American speciality beer. This has crossed the Atlantic and now there are 10s of breweries in the UK, loads of pubs selling craft beer and what feels like hundreds of different varieties to choose from. Having been in despair about the "youth of today" drinking slop like Stella its great to see so many swap and drink real beer, 

These two trends sort of coincided this week. I went into Cyclefit to get properly sorted out in terms of TT position. The fact that a business like this can exist and apparently prosper is testament to just how cycling has grown. 

This trip gave me the opportunity to meet up with Katy for one last time in London, in just a couple of weeks or so she will be starting a new chapter of her life in the USA. 

I thought it appropriate we should have a drink at her "local",The Fox a great pub with a huge range of beer and not a bad burger to boot. We had a drink here on the day I helped Katy move in a year ago, since then its just got better, with an even wider range of great beer to choose from as the picture below attests....

For food we went somewhere new (for me). Duke's   which has its very own beer and a quite stunning range of  meat including the biggest rib of beef I have ever eaten.  This place was all of about 100yards from the Fox, it's amazing, so much goodness in so small a distance.

So, slight disappointment I won't be making quite as many trips to London in the future. But every cloud and such, Katy will be in New York soon and that opens up a whole new world (well country) of beers to explore. And the ribs there probably make even Dukes seem like a starter....

Skipping breakfast

I used to skip breakfast in the mistaken belief it would help me lose weight and sessions done would increase my "fat burning". In fact it doesn't for the reasons below.

The average person has 450-550g of glycogen stored. If depleted this will be replenished as a priority by any carbs digested from food (and to a lesser extent from fat reserves). Only after it is replenished will extra carbs be stored as fat. Each g of glycogen provides about 4kcal worth of energy.

Glycogen is stored in 2 places
- 80% Locally in muscles, prime use is to provide energy for exercise. Glycogen will only be available for the muscle where it is stored
- 20% Is stored in the liver. The prime purpose is to provide energy for non-muscular body functions that require glucose, the most important of which is brain function. As a secondary function it will provide a top up to muscles whose glycogen is starting to get depleted. (Note: this happens before the glycogen level in the muscle hits zero, at around 25-30% left.)

Assuming your glycogen stores are full on kipping down, following a night's sleep you will wake with
- Practically all of your muscle glycogen still available (assuming you have have not been involved in some serious "interval training" with your partner :) )
- 50% of your liver glycogen available (the rest will have been used to provide the energy the brain needs to create your dreams/nightmares)

So if you went to bed with 500g of glycogen stored you will wake with 450g.

Even taking into account the fact that not all the muscle glycogen is available for training this is still allows a lot of exercise, very roughly there is enough to allow a 70kg rider to climb Alpe D'Huez one and half times flat out without feeding.

If you are not going flat out then you will be able to go for an even longer as fat provides an additional source of energy at intensity levels less than flat out (around 30% at endurance pace).

Skipping breakfast will however make training sessions FEEL harder. This is because on waking your blood sugar level will be low and, since the brain needs sugar to work at its best, this will make you feel rough. Missing breakfast and going straight into training will aggravate this. Worse, if your session is quite long and you don't eat during it after a while your liver glycogen will start to get seriously challenged

Skipping breakfast means that the liver glycogen is level only 50% and this will continue to decline. It will decline even quicker if some of it is needed to help out muscles whose local glycogen levels are getting low. Once the liver level hits around 10% the brain signals that things are getting serious. Pushing past this point without eating will be extremely tough regardless of how fatigued your muscles are or how much  muscle glycogen you have left. Push too hard and you will collapse big time. All this is very stressful but has very little benefit in terms of physical fitness, though it may make you mentally tougher.
 
So bottom line is that skipping breakfast really has little impact in any sense that will affect your fitness unless the subsequent training session is very brutal and/or long.  You will only by training in a really "fasted" state if you eat and train in a way that stops your body replenishing glycogen (i.e. running a serious calorie deficit and/or following a very low carb diet). Even if you do this best advice is to have eat a small amount of high GI carbs before exercising first thing in the morning and, if planning to ride more than a couple of hours, eat a few more during it just to keep brain ticking over.

Weight target

Following my Bodpod experience I now have a target fat %, which in turn gives me a target weight.

When I did the test I weighed 67.5kg and want to lose 3.5kg of fat. 

So target weight will be 64.0kg. 

I plugged this weight into the two key metrics I am tracking and came up with a couple of happy coincidences.

• It's slap bang middle of the "healthy" BMI range
• Simply repeating the last test I in terms of power would yield a w/kg of 5.05

Both of these would be nice :) 

Entering the Bodpod

Recently I took some tests to establish a baseline for comparison next year when I turn 55.

Included amongst them was the "Bodpod". This is a device that provides an accurate measurement of your body fat %. 

Using it is quite funny, its a bit like an egg/womb. You strip off down to your undies and sit inside it, then a soothing woman's voice asks you to relax and stay quite still while in the background you can hear the whirring  of machines and feel subtle wafts of air on your skin as the Bodpod does its stuff.

Bodpod in action (not me in it though)

Anyway once all that was over I got my results. The result was 12.4%. My weight at the time was 67.5kg which means that I am lugging about 8.3kg of fat. 

8.3kg is quite a lot. Many cyclists (including me I have to admit) will spend large amounts of cash on carbon fibre widgets that will shave a few g off bike weight, yet I am carrying around the equivalent of an entire bike (and full water bottles) in fat all the time, including up every mountain.

Shifting all of this is not going to happen. However knowing exactly how much fat I have does let me set a target. 

I'm going to aim for 5kg of fat which will mean a target fat% of around 8%.

This in turn gives me an objective/means of tracking. I need to lose roughly 3.5kg of fat which is the equivalent of 11500kcal. so I need a total calorie deficit of around that number.

So, in theory, I can just keep a running total of my calorie deficit with a view to hitting this magic number. This is nice as I find tracking a running total that I have complete control over the most satisfying way of working towards a long term goal. 

Will be interesting...

Worms don't listen to bassoons

Mrs M and I went to see Robin Ince. It was great fun, with many highlights, one of my favourites (and Mrs Ms to judge by the chortles coming from next to me) concerned Charles Darwin's last book 

This showed that even at his latest stages of life Darwin was still the consummate scientist. His investigations into one of nature's more mundane species Included testing to see if they could hear sounds.

He did this by submitting them to various sounds, including a whistle, a piano and, remarkably, a bassoon (completely sensible of course, it's quite possible that worms would react to low notes from a bassoon while being insensible to others)

While no means in the same league as Charles Darwin, I do share a lifetime's passion for science with him. That's what I find most absorbing and motivating about the training I do. I love all the facts/figures and experimenting with what works and what doesn't.  

Just listening

Much of my training atm consists of long "fatburn" or "sweetspot" sessions. 

This is proving to be a great opportunity to actually listen to music again. 

Building up to target power then just zoning in and actually concentrating on an album rather than just have it in the background is a great experience. 

I'm combining catching up on old favourites with listening to some of the new tracks I have inherited from my children.

Great fun.

Test four

After a bit of a break carried out test four today. 

Went remarkably well, especially as I have been concentrating on keeping weight down.

Good, if slow, news on that score. Tested weight is 68.8kg, lowest to date, still on the upper side of the BMI range but heading towards the middle.

As for the test itself

Results of the test were:
Bike used: Wattbike
Position:    Upright
Weight> >>>>>>68.8kg
20 min power>> 340W
FTP power >>> 323W
w/kg >>>>>>>> 4.70 
Avg HR 158bpm
Max HR 164bpm
Last 17 min drift 1.73% 

Pretty damn good. What was especially impressive was the quality of the test. I set an initial target pace of around 330W+  then just held steady for the whole effort, just upping the effort slightly in the second half. 

HR remarkable.  Average was 6 bpm less than previous test, despite extra power. Ditto max at 164 was 5 less and well off my red zone of 172bpm+
Drift once warmed up was only 1.7%, compared to 5% last time.

In part this will be down to the nature of my training atm, which tends to lower HR. However the HR results are matched by how it felt. Subjectively this was easiest test so far and I was genuinely surprised when I saw I had touched 340W. 

Cals in vs Cals Out

For the past 3 and a bit weeks I have been keeping a food diary, as accurately as possible, counting calories in vs  calories out. 

The results to date make interesting reading. 

I started at 71.1kg and my latest weight is 69.8 (measured last thing at night). So 1.3kg lost to date. Over this time I averaged a daily deficit of 764 calories. 

I am also measuring body fat% using some Tamita electronic scales. Now, while at least as if not more important compared to weight, this measure can be a bit hit and miss. It varies quite a lot during the day and day to day can shift quite a lot.

Still it's not entirely random and I think safest thing to check is a moving average over a week or so. This shows a reduction from 15.9% to 14.3%.

Taking the two sets of figures together 

• At start I weighed 71.1kg of which 15.9% = 11.3kg was fat
• Now I weight 69.8kg of which 14.3% = 10.0kg is fat

Difference = 1.3kg fat lost which matches weight lost. 

This is good news as it seems to indicate the weight gone is fat. One issue with diets is that you can easily lose a lot of weight (2-4kg) just by burning off glycogen. But this only takes a very small calorie deficit (2000kcal or so in total so can be done in a day) and comes back just as fast.

It's a bit of bad news though. In total my deficit is 18000kcal and this should mean more than 2kg of fat should have gone (assuming a pound of fat = somewhere between 2800 and 3700kcal (see here for source of these numbers))

It's possible I may be overestimating deficit but don't think so. I have been pretty assiduous in keeping the food diary for cals in and my cals out is based on power data which is pretty accurate.

This leaves one other variable which is base metabolic rate (BMR). I have set this quite low at 2300kcal, which is 200kcal less than the 2500 average for males that appears on all the nutrition advice panels on food.

But it looks as if this is still too high, by a factor of around 300kcal. 

This makes a sort of sense. It would account for my lifetime's fight vs the scales. It may also be linked (or even caused by?) my capacity to perform well in endurance events. 

Whatever, I will reduce my BMR to 2000kcal and see how that changes things.

Weght>Power

Right now my first focus is on losing weight. I plan on keep doing this until I get to the point where

• I can't lose any more
• My power is affected (i.e. I can't replicate previous test power)
• I get sick of it

I'll also be keeping an eye on my BMI and note that along with any tests. 

On BMI I am 5' 8 1/4" tall which is 173.4cm. My weight atm is 69.2kg which according to the NHS site here  gives me a BMI of 23.2 which is on the higher side of the healthy range.

While OK from a general health pov this goes to show I can still aim to lose a bit. Top cyclists will be much closer to the other end of the range while still maintaining power

Third test

Carried out my third test yesterday after a day of rest following the Strava challenge.

Weight had dropped significantly, a loss of 1.7kg since the last, under 70kg for the first time in a long time.

Legs felt OK if slightly tired, mentally I was a bit underprepared though and expected test to be hard. In fact it went well,first 10 was 331W. Flagged a bit towards the end but think it was mainly due to head not legs. 


Results of the test were:
Bike used: Wattbike
Position:    Upright
Weight> >>>>>>69.5kg
20 min power>> 327W
FTP power >>> 311W
w/kg >>>>>>>> 4.47 
Avg HR 164bpm
Max HR 169bpm
Last 17 min drift 5.05%


So a pretty significant improvement since the last test, much less weight and power up. Interestingly HR was lowest yet, under 170.May be due to fatigue, may be a sign of being fitter. Time will tell

Strava challenge

Strava is something that didn't exist when I was last riding. I've signed up for it and can see how it can become quite addictive, with the possibility to record every ride comparing your PBs with those of others. 

There are also challenges and I just completed my first one. It was to do 574 miles in a couple of weeks, but I decided to up the effort a bit and try it in 5 days.

It proved a useful opportunity to work on my TT bike, burn off some fat and get used to some LSD (long steady distance). It worked well on all fronts. I was especially pleased to see how easy it was to keep up a steady 20mph. I'll probably have another go at a 12 next year. 

I was the first to finish and I have to admit a frisson of pride seeing my name number 1 out of 13000+ riders. 

Second test

Second test yesterday. Much better than first. Lost a couple of kg, the bloat of a week off, so just focussed on good form during the 20.

Went well, solid steady session with very flat HR. 

Now the hard work starts. 

Results of the test were:
Bike used: Wattbike
Position:    Upright
Weight> >>>>>>71.2kg
20 min power>> 321W
FTP power >>> 305W
w/kg >>>>>>>> 4.28  
Avg HR 168bpm
Max HR 172bpm
Last 17 min drift 2.12%

5@55 First test

I carried out the first test as the first session after a week off the bike helping out at LEL and exploring Silloth.

As a methodology I used the routine described by Hunter Allen here . Plan is to repeat this and track progress. (Weight will simply be measured before the test)

The test gives a 20 minute figure which is reduced by 5% to give an FTP estimate. As time progresses I'll supplement this with some "real" 60 minute efforts to check and also carry out tests under different conditions on different equipment, as one thing of interest is to see how these affect power. Of particular interest is TT vs road bike, since my TT power is consistently lower by a substantial figure and I'd like to close/eliminate this gap.

Results of the test were:
Bike used: Wattbike
Position:    Upright
Weight> >>>>>>73.5kg
20 min power>> 320W
FTP power >>> 304W
w/kg >>>>>>>> 4.14  

So a way to go yet.  

(One thing of interest was that my HR was up compared to before I had a break. It peaked at 174 during the 5 minute warm up. Goes to show that depressed HR is an indicator of being tired even if you can still put out the power)

5@55

One thing that has been missing since I started training again is a goal of some sort.

Given what I have done in the past I'm not really that up to setting some sort of specific event related goal. That isn't to say that I won't do similar in future but reality is repeating something isn't really the same as doing it for the first time. And I'm not really that fussed about improving a few places in an event and for sure don't want that to be the be all and end all of a season.

So I have decided to try something a bit different. One thing that does keep me motivated is trying to set "power PBs". The gold standard of power is w/kg, this is the single best predictor of how someone will ride. For example, measured for FTP, 6 w/kg is a good tour rider, 6.5 w/kg is a tour winner. See here for more examples Power Profiles

I don't aspire to these heights but would like to set some sort of w/kg goal. This will require training well and shedding a bit more weight. It will also mean taking part in some events, both for training purposes and with the hope that it will help push me harder and improving PBs. 

As to the target. Well I will be 55 next year and it just so happens that 5w/kg is a pretty stretching FTP target.  

So my goal will be "5@55"> do a FTP effort at 5 w/kg some time during my 55th year.

This is around the top level for an amateur so will be a big ask. Still I will have plenty of time to try to achieve it and regardless it will keep me motivated and focussed.

Should be fun..