Fuelling for iron distance triathlon | Nutrition

There’s at all times one thing recent to be taught if you find yourself getting ready for less than your second iron distance triathlon – particularly relating to fuelling.

Leading British center distance triathlete Adam Bowden made the profitable transition from the observe to brief course triathlete in 2009 after which on to the non-drafting world in 2018. But going lengthy is certainly one of his largest leaps but. He put in an encouraging begin in Tulsa in May, and bids to enhance on that displaying at IRONMAN UK in Bolton this weekend.

The distinction between racing for 4 and eight hours reveals up in lots of points of our sport, however notably relating to fuelling. Without using the right technique over iron distance, the physique and the race will begin to unravel – and there’s no manner again.

To this finish, Adam has turned to Precision Hydration for help. In this text, PH founder Andy Blow explains not solely how the fuelling consultants are working with Adam, however how we are able to all take cost and simplify our personal fuelling methods to ship our greatest come race day.


The common ideas of fuelling

Andy’s view:

Firstly, we speak about hydration and fuelling slightly than vitamin. For us, vitamin is your general weight-reduction plan, an extremely vital matter however not one we’re addressing right here. As such, we’re presuming that whether or not coaching or racing, our triathlete begins an exercise stuffed with power – with glycogen shops topped up – and is nicely hydrated.

Once into train, there are three issues required:

  • Fluids
  • Electrolytes
  • Calories for longer distances – normally within the type of carbs

The questions then turns into, for each hour, what number of:

  • Millilitres of fluid?
  • Milligrams of sodium (salt)?
  • Grams of carbohydrate?

In our expertise, in the event you get these three issues about proper and your pacing is nice, your vitamin plan will basically work. All you really want when exercising is water, salt and carbs, and it’s the amount that issues.

We’re not coming in and educating Adam what to do – we’re only a sounding board. He’s already a profitable athlete, so our partnership is about making small and smart tweaks, and having the boldness to say that in a whole lot of areas Adam is already doing nicely.

It’s an vital perspective to undertake. The sports activities science ‘white knight’ concept of telling individuals find out how to do it correctly is BS and athletes shouldn’t go in search of it. Of course, there’s a spot for professional steerage, however you be taught 95% of what you want from doing it and iterating your self. That holds for something you are attempting to enhance in triathlon, together with vitamin.

This doesn’t imply it’s not crucial to get your fuelling appropriate, particularly when stepping up in distance. If it’s vital in 70.3 racing, it’s 5 occasions as essential in Ironman.

As such, the fuelling hierarchy of wants ought to be:

  • Get sufficient in
  • Get the timing proper
  • Pick the suitable merchandise

The third level is often the athlete’s first concern, however sports activities vitamin merchandise are basically very comparable – they comprise fluids, electrolytes and carbs. Gels are typically primarily glucose and perhaps fructose and there’s little to decide on between them… so long as they don’t make you puke. If you wish to get into the trivia of what beneficial properties hydrogels or dextrin will provide you with, it’s fractions of a level of distinction.

As for the timing, it’s normally higher off staging your fluid and calorie consumption over the hour slightly than taking it multi functional go as a result of it gained’t hammer your intestine as a lot. But what issues most is the web consumption over the interval.

That mentioned, it does rely on the course although. At the IRONMAN 70.3 worlds in Nice in 2019, athletes could be working laborious on the climb, however grabbing a bottle on the quick descent could possibly be nigh on unimaginable. So, we have been advising individuals to eat and drink loads on the flat. As at all times, have a plan however be able to adapt.

Hydration

With any athlete, you wish to take a look at what they’re doing at current. Elite triathletes have reached a excessive stage, so no matter they’ve been consuming and ingesting, they’re normally not too vast of the mark.

We began by going again by way of Adam’s latest races and interrogating how a lot fluid, salt and carbs have been taken on and ran these numbers in opposition to what we knew to be believable for an athlete of his physique make-up.

We additionally examined Adam’s sweat sodium focus and sweat charge. It’s fascinating that he has a comparatively low sweat sodium focus – helpful for an elite lengthy course triathlete who desires to compete within the warmth [Adam demonstrated in Dubai in 2019 how well he performs in the heat] – however a excessive sweat charge. It implies that there is likely to be room for enchancment within the quantity of fluid he can eat in order that his efficiency isn’t negatively affected by dehydration.

There is not any one-size matches all for sweat charges. They are typically as much as fivefold totally different between triathletes – from nearly zero to 1.2l/hr – and sodium focus variances might be tenfold. Put these collectively and it multiplies out to very large variations.

In phrases of when to hydrate, it’s much less prosaic than with ingesting carbohydrates as a result of whereas a coaching session would possibly solely take an hour, sweating in a conservatory at 25 levels on the Wattbike is totally different from heading exterior at 6am earlier than dawn.

Drinking on the bike can be far simpler than on the run. At Adam’s stage, working near 5min/mile, ingesting is admittedly fairly laborious. He desires to get off the bike with nearly web zero dehydration so he can get by way of a 70min half marathon with out ingesting an excessive amount of. Even a mid-pack triathlete might be going to drink 50% much less on the run, so we advise triathletes to entrance load their hydration.

Precision Hydration / Andy Blow

Carbohydrates

It’s typical for athletes transferring up from brief course to lengthy distance to below eat energy, so we frequently attempt to up the quantity, which generally is a bit uncomfortable at first.

The frequent knowledge of earlier generations was to eat the minimal you might get away with for max efficiency, whereas more and more the analysis and anecdotal proof is displaying that athletes who eat extra can preserve output for longer.

Having mentioned this, we predict Adam’s carbohydrate consumption is already fairly robust, so it’s not one thing to meddle with an excessive amount of.

We’re additionally speaking in regards to the timing of consumption and – as with hydration – front-loading his fuelling extra. Taking on extra energy on the bike than on the run is regular, however we’re additionally specializing in the preliminary phases on the bike when the physique is extra receptive to absorbing carbohydrates. The deeper you get into the race, the extra stress you’re below, the extra blood circulate is diverted away from the intestine, and the more durable it’s to soak up extra energy.

Feeling as in the event you’re overeating within the early phases of the bike could really feel unnatural, but it surely’s placing power within the tank for later and the longer the race, the extra profitable this method proves (if athletes are prepared to do it).

Fuelling for coaching

It’s not simply races the place we have to think about fuelling. The bulk of our endurance exercise is spent coaching and there was a lot debate over how a lot fuelling when coaching ought to play a component, particularly for an athlete akin to Adam, who trains two or 3 times a day.

Fuelling throughout train tends to be helpful round 60-90mins relying in your viewpoint. There are two methods to have a look at it. The first is with the ability to maintain efficiency throughout that exercise. It’s just about confirmed that nil by mouth is ok for something as much as one hour and you may nonetheless carry out at your greatest.

There’s an argument that once you attain 90mins somewhat little bit of carbohydrate might be useful, in all probability extra from the way in which it stimulates the mind slightly than the muscle groups – akin to carb mouth-rinsing (the place an athlete swishes a carbohydrate answer across the mouth to trick the mind into pondering energy are being consumed).

While we definitely wouldn’t dissuade athletes from consuming throughout a 90min session in the event that they felt they wanted to, past 2hrs it’s nearly categoric that you might want to tackle carbs.

Research reveals that the beneficial quantities to ingest are pretty strong. Up to 2hrs it’s as much as 30g/hr and 3-4hrs it’s 60-90g/hr, and even perhaps extra in the event you can tolerate it. How you’re taking it on, whether or not by way of liquid, gels or chews is as much as you.

The second half is to think about whether or not you might be coaching once more that day, or have a tough session the next day. You might be able to ship a stable session with out fuelling, however will it have a knock-on impact to the following one?

It’s an idea athletes don’t at all times embrace when growing their coaching load, and is very frequent with novice athletes on coaching camps. They eat as they might usually on a morning experience, however are flat within the pool within the afternoon as a result of they haven’t fuelled adequately for the session.

A common precept individuals fall down on is to eat much less in coaching whereas planning to have extra carbs in a race believing they’ll race higher. It’s not true. You find yourself compromising coaching and restoration, and don’t practice your intestine to tolerate the quantity of carbs you’ll want on race day.

The concept of coaching the intestine is transferring from the realm of purely anecdotal to proof based mostly. Sports scientists Trent Stellingwerff, Asker Jeukendrup and Aitor Viribay have all put out papers about what a intestine coaching protocol appears to be like like, the precept being your physique can adapt to the stresses you place it below – and one stress is elevated carbohydrate load.

The broad premise is that the human species continues to evolve the place we have now entry to totally different meals. If we’re extra equatorial, we eat extra plant-based, and the additional we head in the direction of the poles, the extra carnivorous and decrease carb the weight-reduction plan.

It reveals the human physique is massively adaptable to several types of meals. So, in the event you give the intestine extra carbohydrate it upregulates the transporters to maneuver carbs to the bloodstream.

As usually, the science is following what elite athletes are already doing. We work with professional tour biking groups who practice athletes to change into psychologically and physiologically used to taking over 100g carbs/hour. The knowledge from professional tour riders I’ve seen reveals a few of them thrive at 65-70g/hr whereas others can tackle 110g/hr. It’s a wide array, however skewing on a regular basis somewhat bit increased in individuals’s notion.

As such, I’m much more bullish about advising individuals to gasoline extra aggressively in key coaching periods lately as a result of I feel the web achieve is you practice more durable, adapt quicker, get well higher, and in addition practice your intestine to tolerate no matter you’ll have on race day.

As for find out how to do it. Start by four-to-six weeks out from a race, introduce a few periods per week the place you enhance the quantity of carbs above your regular consumption.

Recovery

Post-session or post-race there may be at all times a calorie and a hydration/electrolyte deficit to make up for to ensure that restoration to be thought of ‘full’. The magnitude of those deficits relies upon primarily on the size and depth of the exercise, environmental situations and the way a lot gasoline and hydration have been taken in throughout the session. In addition to ingesting a powerful electrolyte drink like PH 1500 to assist offset sweat losses a restoration shake such because the ForGoodnessShakes Recovery, that Adam makes use of, might be very helpful when it comes to delivering not solely a considerable amount of simply digestible power to begin to restock glycogen shops however to additionally herald some protein to assist with tissue restore.

Adam Bowden

Adam’s view

I solely began working with Andy in the beginning of the yr and he’s offered me with a type to fill in for each laborious session I full. I take my physique weight in the beginning and finish of the experience and element what I ate and drank. Andy then comes up with a plan for fluids, sodium and carbohydrates, which we take a look at and see what works.

As I’m getting ready for Ironman, I’ve just lately been doing loads longer rides, even as much as 6 ½ hours. I just lately accomplished a 155km solo experience in 4 hours , so was motoring alongside. Being disciplined with my vitamin is a key half.

I’m utilizing the PH 1000 and PH 1500 to account for my sodium loss by way of sweat, which actually appears to assist, however I’m additionally ensuring I cease and shortly refill my drinks bottles. Previously the temptation when coaching was simply to go together with what I’d set out with on the bike.

Adam Bowden

While competing in IRONMAN 70.3 races, I’ve been taking over about 70g/hr of carbohydrates and we’ve mentioned growing that to 90g/hr.

I’d strive some solids, akin to flapjacks early to maintain on high of the carbohydrate consumption. I already know that when my glycogen shops go down I’m in hassle and a whole lot of triathletes say that vitamin is the factor they mess up, so I’m hyperaware.

The bulk of my vitamin must be achieved on the bike, with a number of gels to high up on the run. If I lose a number of seconds getting gasoline in, it would greater than be made up for if I can get my vitamin proper and run by way of the sphere on the marathon.

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