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Hill reps and overgearing: What does the science say?

Image by Rook Media 

 

We’ve really been enjoying watching the return of road racing after the pandemic (or somewhat ‘after’), like we're sure many of you are too, and are particularly enjoying watching the athletes at Le Tour grinding up the Alps and Pyrenees in big gears and at massive power outputs. Hill reps are a common part of many endurance training programs, whether that be for running, cycling, or triathlon, and at Endure IQ we are big fans of riding up hills and doing specific overgearing work on the trainer in preparation for a long-distance triathlon (in fact, we dedicate a whole module to this type of training in our three disciplines in our online course LDT 102). We thought now was as good a time as any to review some of the key studies in this field, and whether the available research backs up this type of training prescription.

 

Specific strength training for endurance athletes 

We call this type of work –...

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Should I train my gut? Both sides of the coin on preserving endogenous carbohydrates

 - Dan Plews and Ed Maunder 

 

As we have mentioned in previous blogs, during ultra-endurance events lasting ~8-15 hours like long-distance triathlon, the preservation of endogenous carbohydrate (CHO) stores is one of the key determinants of success (25). As humans, we possess a finite capacity to store CHO energy as glycogen, typically <3000 kcal, of which ~80% is stored in muscle and ~10-15% in the liver (7). Assuming typical running economy values observed in highly-trained distance runners (1.07 kcal.kg-1.km-1) (6) and a body mass of 68 kg, these endogenous CHO stores would not be sufficient to support even one marathon alone (~3070 kcal), let alone a marathon following a 3.8-km swim and a 180-km bike ride. Accordingly, exercise of sufficient duration and intensity – such as an Ironman – will deplete these endogenous CHO energy stores to very low concentrations, and this glycogen depletion has been linked to the fatigue we feel in the late stages...

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