Systematic ReviewHumann = 2512026China
Effect of acute exercise on the dynamics of testosterone levels: a systematic review of randomized controlled trials.
Plain-language summary
This study set out to clarify how testosterone levels change after a single bout of exercise, given conflicting findings in past research. It reviewed 15 randomized controlled trials with 251 participants, comparing how different types of exercise (like resistance training vs. aerobic) and intensities affect testosterone levels over time. The review found that resistance training led to a bigger and longer-lasting testosterone boost than aerobic exercise, but very intense workouts could suppress testosterone for up to 72 hours during recovery. Men saw a stronger response than women, and younger men had a bigger boost than older adults.
Key findings
- Resistance training causes a bigger, longer-lasting testosterone rise than aerobic exercise.
- High-intensity exercise boosts testosterone short-term but can suppress it for up to 72 hours afterward.
- Men respond more strongly than women, and younger men more than older adults.
- Blood tests pick up changes better than saliva tests, except during high-intensity exercise.
How to analyze the study yourself
- Study type
- Systematic reviews synthesize existing studies but depend on the quality and consistency of the research they include.
- Population
- Mixed gender and age groups, with stronger responses noted in younger males.
- Funding
- Not reported
- Watch for
- This review found that resistance training gives a bigger, longer testosterone boost than aerobic exercise, but very intense workouts can lower testosterone for days after. If you want a short-term testosterone bump, resistance training may be worth prioritizing over cardio.