From: Abstract (provisional) of “Arginine and antioxidant supplement on performance in elderly male cyclists: a randomized controlled trial”
A study published in the Journal of the International Society of Sports Nutrition (23 March 2010) has shown that an arginine and antioxidant-containing supplement increased the anaerobic threshold at both week one and week three in elderly cyclists.
Background to the Study
Human exercise capacity declines with advancing age. These changes often result in loss of physical fitness and more rapid senescence. Nitric oxide (NO) has been implicated in improvement of exercise capacity through vascular smooth muscle relaxation in both coronary and skeletal muscle arteries, as well as via independent mechanisms. Antioxidants may prevent nitric oxide inactivation by oxygen free radicals. The purpose of this study was to investigate the effects of an L-arginine and antioxidant supplement on exercise performance in elderly male cyclists.
To carry out the study, sixteen male cyclists were randomized to receive either a proprietary supplement (Niteworks(R), Herbalife International Inc., Century City, CA) or a placebo powder. Exercise parameters were assessed by maximal incremental exercise testing performed on a stationary cycle ergometer using breath-by-breath analysis at baseline, week one and week three.
Result
L-arginine and antioxidant supplementation can improve exercise performance in the elderly.
You can read a provisional pdf version of the full study here.
{ 1 comment… read it below or add one }
I have tried nightworks and I find it wonderful – I get clearer thinking processes. My brain is more organised, when performing any exercise I have the stamina to excel to a higher level. My body feels so much more relaxed & lighter & people tell me I have more colour in my face. I do not have any health conditions but a friend of mine who takes Niteworks, had cancer, which is now better but the after effects were horrible and she now finds that her terrible morning cramps when she woke up unable to get out of bed – have disappeared and her muscles are working properly.