What the trials in athletes show
Most of these studies are small and short, many have no proper comparison group, and none counted injuries.
Small studies, one descriptive reviewMixed evidence
A 2023 review found 12 studies of Pilates in athletes, lasting 4 to 14 weeks, and reported gains in balance, agility, strength, flexibility, core strength and endurance, but it didn't pool the results or rate their quality. Our own count, including newer studies, is about 16, in runners, footballers, volleyball, basketball and baseball players, dancers and archers.
Sources 3, 4
Runners: the strongest trialEmerging evidence
In 32 trained runners, two 1-hour classical mat Pilates sessions a week for 12 weeks, alongside running, cut 5 km time from 25.65 to 23.23 minutes, against 25.33 to 24.61 minutes with running alone, and made running more economical. One small trial; our Pilates for runners guide has more.
Source 5
FootballersMixed evidence
In 30 amateur footballers, 8 weeks of mat or reformer Pilates in place of half their team sessions improved many tests within each group, but against the comparison group (players from another team) only a hop, an agility and a passing test differed, and jumps, balance, flexibility and sprints didn't. In 15 youth players, 5 weeks of mat Pilates increased knee strength, though the comparison group improved too.
Sources 14, 25
Court sportsMixed evidence
In 30 young female volleyball players, reformer Pilates 3 times a week for 8 weeks improved how they landed from jumps. In 45 basketball players, jump training plus Pilates raised vertical jump most, but the groups differed at the start. In 16 volleyball players with no comparison group, plank endurance improved.
Sources 15, 26, 27
Dancers, archers and baseball playersMixed evidence
In 22 hip-hop dancers, 12 weeks of mat Pilates improved tummy-muscle tests but not jumps or balance, and the authors say their results "do not establish efficacy". Dancers' posture and flexibility, archers' balance and baseball players' trunk strength improved in small studies, most without a proper comparison group.
Sources 28, 29, 30, 31, 32
Runners' movementMixed evidence
Clinical Pilates improved movement screening scores in 40 recreational runners, with no comparison group, and a 12-week home mat programme didn't change how much novice runners' knees caved in while running.
Sources 33, 34
Flexibility, balance and enduranceEmerging evidence
In 47 young women (not athletes), mat Pilates for an hour twice a week for 8 weeks improved flexibility, tummy-muscle endurance and balance. A review of hamstring flexibility found results in athletes were contradictory, that at least 3 sessions a week for 6 weeks were needed for a large change, and that the gains faded from the second week after stopping.
Sources 35, 36
StrengthMixed evidence
Across 11 trials (not in athletes), Pilates was no better than other exercise for strength, balance or flexibility, with very low to low certainty. Our guide to Pilates and strength has more.
Source 37