Previous research has found that even low levels of dehydration may impair high intensity exercise performance on hot days. Higher volumes of fluid replacement have proven advantageous for runners and cyclists under these conditions. Even in cool weather (25C), athletes could lose 1-1.5 litres of sweat per hour. The … [Read more...]
Are carbohydrates of benefit during a race?
Running for over 90-120 minutes at race pace can totally deplete glycogen stores even if well loaded beforehand. This means your muscles will have to resort to fat or protein for energy. As fat requires oxygen to burn, you will have to slow right down (or walk!), so that sufficient oxygen can reach the muscles. … [Read more...]