Doing at least half an hour of exercise three times a week may boost men’s sperm count, say, scientists.
Men who took up running and stuck with it had more “healthy swimmers”, according to research in the journal Reproduction.
The boost was only temporary and began to wane within a month if the men stopped their treadmill training.
Experts say it is important to strike the right balance because too much exercise can harm sperm production.
All of the 261 men enrolled in the recent trial were healthy and did not have any fertility problems as far as they could tell. They had normal sperm and healthy-looking sperm and led fairly sedentary lives.
The men were allocated to one of four programmes to boost Sperm count:
- No exercise
- Three sessions a week of high-intensity interval training (10 one-minute bursts of very fast running with a short recovery period between each bout)
- Moderate exercise, three sessions a week (30 minutes on a treadmill)
- Intense exercise, three sittings a week (about an hour on a treadmill)
Exercise training appeared to boost sperm quantity and quality, with moderate exercise coming top.
Men in all three exercise groups lost weight and saw improvements in their sperm count test results compared with the men who did no exercise over the 24-week trial period.