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How Fast Do You Lose Endurance?

How Fast Do You Lose Endurance?

In a 1990 study Houmard et al looked at detraining of experience endurance runners who were averaging 81km per week in training (~60km at ~75% VO2 max and 21km at ~95% VO2 max). Over a three-week period of detraining the athletes cut their volume by 70% to 24km, maintaining the intensity distribution with 17km at ~75% of VO2 max and 7km at ~90% VO2 max.

The participants in the study had an increase in maximum heart rate (2.3%), and plasma volume decreased (-5.6%) during the period of reduced training, so some physiological adaptations regressed. However, performance saw no change, with VO2 max and 5km time trial results holding steady. Another significant finding in this study was also that time to exhaustion during VO2 max testing increased by 9.5%, suggesting that the decreased training left the athletes much fresher. These results indicate that being smart with limited time or training capacity can still help massively in maintaining running performance.    

These changes also appear to be less pronounced in older athletes and athletes who have trained for a longer time. Which makes sense, the accumulated progression and adaptations from consistent training over a long time are more entrenched, and therefore more resistant to deterioration than acute improvements in performance from relatively shorter training blocks.      

As Ross puts it, defending physiology requires much less work than earning that physiology, and a little goes a long way. With races off and freedom of movement restricted in many places, despondency is pervasive. But lamenting the situation and the certainty of your lost fitness gains won’t serve you well. These studies highlight that even though it may be difficult to stick to training plans and complete hard sessions, a significantly reduced load of training still goes a very long way to preserving the physiological adaptations for which you have laboured.

Keep Motivated During A Pandemic

Keep Motivated During A Pandemic

With upcoming races off, a huge extrinsic motivator is out the window for many people. And the joy so many take from running outdoors with their friends is being tainted by the uncertainty around everything that’s going on. Is running, even just with one other person, unethical in the current circumstances? Are you opening yourself up to the risk of being infected? And could that ‘harmless’ run you did yesterday end up harming someone else tomorrow? In many places running outdoors alone, or with those sharing your home, is still allowed. However, in some jurisdictions even that luxury has evaporated.

It says a lot about the social nature of us humans that solitary confinement is considered one of the most abhorrent punishments within a prison. Although the social distancing people are experiencing is much less extreme than strict solitary confinement (people are spending time with the people in their home, and online connectivity is blossoming now more than ever), the resultant disconnect is still placing many people under a lot of mental strain. Add to this the uncertainty and disruption and it’s no surprise some are struggling with motivation.    

Even though it may feel like so much is spiralling out of control, and the uncertainty may be fuelling a growing flame of anxiety, it’s time to focus on what you can control. Amidst this chaos there is opportunity. The silver lining on the most ominous of stormy clouds may be very thin, but it will always be there. Much of what’s going on is well beyond your control as an individual. Incessantly checking the growing number of cases and deaths in your vicinity isn’t going to do anything to change the trajectory of the numbers. Worrying about what will happen to the economy won’t change the number of percentage points it fluctuates each day. 

Lactic Acid – Friend or Foe?

Lactic Acid – Friend or Foe?

Another commonly held belief is that the warm down after a hard workout or the shake out the next day is important to ‘help get the lactic out of the legs’. However, again the science doesn’t back this up. Yes, walking or jogging does shorten the time it takes for lactate levels to return to normal, but this return to baseline occurs relatively quickly anyway. By the time someone is doing a shakeout the day after a race or hard session, the lactate generated by that effort has long ago left the muscles. And where is it going? This is where lactate being a fuel source again comes into play, according to Brooks, after ‘exhaustive’ exercise lactate then becomes the preferred energy source, being burned up by muscles that are no longer using anaerobic respiration, and by the liver to regenerate glucose.

The Perplexing Depth Of Talent In Japanese Running (Part 2)

The Perplexing Depth Of Talent In Japanese Running (Part 2)

Discipline, honour, self-restraint. These are some of the stereotypical character traits people think of when considering Japan. However, devotion to athletics and a motivation to succeed are not enough, in isolation, to explain how so many athletes are competing at such a high level in Japan. Ekiden and the elevated position it holds in the collective conscience of the nation explains a bit more of the situation. However, a final factor that we found came up over and again was the integral role of corporations in the fabric of Japanese running culture. I’m not talking about Mizuno, Asics and Nike.

Many corporations within Japan – Honda, Japan Rail, Kanebo Cosmetics– employ athletes to race and train in-house. The living expenses of the athletes are taken care of, food is cooked by in-house chefs that prepare a menu laboriously agonised over by a nutritionist. Training takes place multiple times per day – some runners in the corporate system reportedly average more than 600 miles (965km) per month – and around these sessions the athletes spend time with the team’s physiotherapists, strength coaches and masseurs. In addition to such extensive support from the team, living expenses being covered, and daily tasks such as cooking being taken care of, athletes running in the corporate teams reportedly receive a salary of US$35,000 and upwards each, depending on performance and their stature within the sport – there are plenty of high performers on six-figure salaries.

The Perplexing Depth Of Talent In Japanese Running (Part 1)

The Perplexing Depth Of Talent In Japanese Running (Part 1)

Japan. Nihon. The Land of the Rising Sun. A country globally renown for many things. A rich cultural history. A cuisine like no other. The world’s largest metropolis – Tokyo. And… running?

Japan is not one of the nations that first comes to mind when most people think about the global running scene. However, in the marathon distance, Japan comes in third place behind Kenya and Ethiopia when looking at the number of athletes in the top thousand marathon times in history. Japan has over one-hundred athletes that have run sub-2:10 in the marathon. Compare this to the USA: with a population nearing triple that of Japan – and massive infrastructure surrounding their collegiate athletics system – the States have only twenty athletes that have run sub-2:10 (thirteen if you exclude record-ineligible Boston).

Our interest piqued, we decided to plunge headfirst into the Japanese running scene and investigate what was going on.

How Much Protein Do Athletes Need? (Part 2)

How Much Protein Do Athletes Need? (Part 2)

It’s interesting that despite studies suggesting that the (already elevated) recommendations for protein intake by endurance athletes may be too low – failing to optimise performance – there are many top endurance athletes who controvert this. An interesting study looked at the dietary habits of elite runners in Kenya.

The athletes were consuming a diet very high in carbohydrates (76.5%, 10.4 g/kg of body mass per day) and low in fat (13.4%). Protein intake represented 10.1% of their total calories which worked out to be 1.3 g/kg per day, which matches the recommendations by the American College of Sports Medicine mentioned above. Another interesting point is that the estimated energy intake of the athletes (2987 ± 293 kcal) was lower than energy expenditure (3605 ± 119 kcal).

This aligns with what we witnessed whilst training with Kipchoge and other elites in Kenya. Coming in from a long run, there was no sign of protein shakes. The snacks of choice were bananas, white bread and milky tea saturated with sugar. The authors of this study also noted that fluid intake by the Kenyan athletes studied was modest, mainly in the form of water (1113 ± 269 mL) and tea (1243 ± 348 mL). Their conclusions: “Although the diet met most recommendations for endurance athletes for macronutrient intake, it remains to be determined if modifying energy balance and fluid intake will enhance the performance of elite Kenyan runners.”
Here we take a look at some of the research and recommendations on how much protein athletes should be consuming, and the reasons why. There’s no universal answer but I hope this will provide some interesting points to consider when making dietary choices. Protein is obviously of significance – playing a key role in myriad bodily functions – but figuring out how much, what type and when you should be consuming protein is really quite a confusing undertaking. It’s by no means as simple as protein = gains. I mean, firstly, what is protein?

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