Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial
Wankhede S, Langade D, Joshi K, Sinha SR, Bhattacharyya S
Evidence is still building up
Summary
An RCT in 57 healthy resistance-training men taking ashwagandha root extract (KSM-66) 600 mg/day for 8 weeks. Compared with placebo, bench press and leg extension strength improved significantly, alongside reduced serum cortisol, increased lean mass, and lower body fat. Limited by its short 8-week duration and a possible conflict of interest with the manufacturer.
Key findings
- 1
Bench press and leg extension strength significantly improved vs placebo
- 2
Serum cortisol levels significantly decreased vs placebo
- 3
Lean body mass increased and body fat percentage decreased
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