Background: Withania somnifera (WS) rejuvenates, increases vigour, vitality and immunity. The antistress effects of WS on physical performance and cardiovascular parameters during exercise were evaluated in healthy volunteers.
Methods: Prospective, open label, randomized, placebo controlled, comparative, pilot study was designed in healthy adult volunteers. After Ethics committee approval 30 consented participants were randomly assigned into three equal groups to receive single capsule for 28 days containing maize starch (placebo group), WS aqueous extract 330mg (WS 330 gr) and 500mg (WS 500 gr). They were assessed at day 0, day 14, day 28 with physical stressors (six minute exercise test, YMCA Submaximal Test, Fixed workload exercise on cycle ergometer), Jammers' hand held dynamometer test and cold pressor test in each visit. Physical performance was evaluated as maximum distance, speed, oxygen consumption, hand grip strength. Cardiovascular response was assessed by heart rate and blood pressure measurements.
Results: On day 28, both WS 330 and WS 500 groups showed significant increase in mean distance travelled and average speed compared to placebo (p
Antistress, Cycle ergometer, Cold pressor test, VO2 max