Still, there were no effects of supplementation on exercise economy or endurance running performance in endurance-trained cross-country skiers.
This study examined the effects of acute supplementation with L-arginine and nitrate on running economy, endurance and sprint performance in endurance-trained athletes.
The moderate improvement in treadmill time to exhaustion in this population is in agreement with our recent observation of marked improvements in endurance rota-rod running performance in old mice following 8 weeks of supplementation with sodium nitrite [ 21].
McClung and colleagues demonstrated improved vigor and physical performance, specifically running time, among female basic trainees with iron deficiency following iron supplementation [13, 14].
Importantly, an anti-inflammatory effect of creatine has been observed when its supplementation was used in runners (with previous experience in running marathons) before a long distance race [ 34].
Koba, T. et al. Branched-chain amino acids supplementation attenuates the accumulation of blood lactate dehydrogenase during distance running.
The present study determined the effects of phytase supplementation on bone mineral density (BMD), body composition and voluntary running activity of male rats fed a high phytic acid, low-Zn diet.
In some cases, supplementation practices ran counter to donor policy, but were pursued nonetheless.
Surprisingly there was no effect of HFD or BCAA supplementation, which contrasts with a previous study of male C57BL/6 mice with voluntary running wheel access for eight weeks.
In a placebo-controlled study, dietary nitrate supplementation with beetroot juice (BR) reduced the O2 cost of submaximal walking and running exercise tolerance in young healthy males [ 5], and improves submaximal exercise endurance in club level cyclists [ 6].
