Effect of sprint training on resting serum irisin concentration - Sprint training once daily vs. twice every other day.

Objective: Exercise twice every other day has been shown to lead to increasing peroxisome proliferator receptor γ coactivator-1α (PGC-1α) expression (up-stream factor of irisin) via lowered muscle glycogen level during second of exercise compared with exercise once daily. This study determined the influence of 4weeks of sprint training (training once daily vs. twice every other day) on the serum irisin concentration.

Effect of sprint training: training once daily versus twice every second day.

This study compared training adaptations between once daily (SINGLE) and twice every second day (REPEATED) sprint training, with same number of training sessions. Twenty physically active males (20.9 ± 1.

4 weeks of high-intensity interval training does not alter the exercise-induced growth hormone response in sedentary men.

This study determined the effects of high-intensity interval training on the exercise-induced growth hormone (GH) responses, whole body and regional fat content. Twenty-four sedentary males were randomized to either a high-intensity interval training (HIT) group or a low-intensity continuous training (LT) group. The HIT group performed intermittent exercises at 85% of [Formula: see text], whereas the LT group performed continuous exercise for 22 min at 45% of [Formula: see text].