ArticleBiology of sport2025
Effects of an 8-week high intensity interval training (HIIT) and ashwagandha supplementation on aerobic capacity, muscle oxygenation and haematological parameters in healthy men.
Article in Biology of sport, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Effects ofNutrients · 2026Pooled it
- Ashwagandha Does Not Enhance the Effect of High-Intensity Interval Training on Selected Energy Metabolism Parameters in Young Healthy Men.Nutrients · 2025Trial
- Back to the Roots: Safety and Tolerability of Standardised Ashwagandha (Pharmaceuticals (Basel, Switzerland) · 2026Review
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ashwagandha extract is an herbal dietary supplement with suggested health properties and the potential to improve physical performance. However, there are still few well-controlled studies confirming improvements in aerobic capacity as a result of supplementation, as well as the mechanisms responsible for this effect. The purpose of this randomized, double-blind, placebo-controlled study was to evaluate the effects of ashwagandha supplementation (600 mg/day) on aerobic capacity, muscle oxygenation and resting blood haematological parameters in healthy male non-athletes 'participants undergoing 8 weeks of HIIT. The training was performed on a rowing ergometer (3 sessions per week, 5-7 sets of 1.5 minutes in each session, at a load of 85-95% of maximum aerobic power, and with rest intervals between sets of 1.5 minutes at a power output of 70 W). Aerobic capacity was determined during a maximal graded exercise test on rowing ergometer, performed before and after the 8-week intervention. During this test, muscle oxygenation was monitored using a near-infrared spectroscopy monitor. The two-factor ANOVA (2 × 2; time × group) revealed no main effect of group and interaction of time and group in the aerobic capacity or haematological parameters (P > 0.05). In turn, as a result of training, both placebo (n = 16) and ashwagandha (n = 17) groups showed large significant improvements in aerobic capacity parameters, i.e. test time, maximal aerobic power and anaerobic threshold (main effect of time, P = 0.00001, post-hoc differences within group; pre-post, P < 0.001; with η
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