Mean power output

Method

Average mechanical power sustained across a fixed-duration maximal effort, cycle ergometer, duration recorded on the edge.

The method is part of the endpoint identity. Studies measuring the same quantity by a different method are held as separate endpoints.

Notes

See peak-power-output. Duration belongs on the edge; 30-second and 60-second means are the same endpoint measured over different windows.

Findings

2 findings from 2 compounds, strongest first.

• nitrate — no detected effect on

  BLikelyGrade B, Likely. Human evidence, limited replication or design limits.FindingNull result

  “A random effects model was performed on six studies and showed that dietary nitrate had significant effects on time-to-peak power (SMD: -0.66, 95% CI: -1.127 to -0.192, p = 0.006) but not on mean power, peak power, or minimum power.”

  Study

  meta-analysis

  Population

  healthy recreationally active adults performing 30-s cycling sprints

  Effects of Dietary Nitrate Supplementation on High-Intensity Cycling Sprint Performance in Recreationally Active Adults: A Systematic Review and Meta-Analysis.2024PMID:39203900

• magnesium(2+) — decreases

  DPreliminaryGrade D, Preliminary. Non-human or in vitro only.Finding

  “Compared with the placebo, the mean power output was lower ( p = 0.03) after magnesium supplementation in 11/13 participants (mean decrease of 24 ± 36 W).”

  Study

  crossover

  Participants

  13

  Duration

  9 days

  Dose

  magnesium chloride 300 mg (ReMag) twice per day for 9 days

  Population

  Healthy regularly exercising adults aged 18-40; primary outcome (sprint exercise performance); 30-second all-out cycle ergometer sprint, complete data available for 13 of 15 participants

  Short-Term Magnesium Supplementation Has Modest Detrimental Effects on Cycle Ergometer Exercise Performance and Skeletal Muscle Mitochondria and Negligible Effects on the Gut Microbiota: A Randomized Crossover Clinical Trial.2025PMID:40077784Industry funded