Fifty athletes were tested. They were divided into two groups. One group received chiropractic adjustments, the other served as controls. Eleven tests were used to measure aspects of athletic ability including: agility, balance, kinesthetic perception, power, and reaction time. After 6 weeks, the control group exhibited minor improvement in eight of the 11 tests while the chiropractic group improved significantly in all 11 tests. In a hand reaction test measuring the speed of reaction with the hand in response to a visual stimulus, the control group exhibited less than a 1% response while the chiropractic group exhibited more than an 18% response after 6 weeks. After 12 weeks the chiropractic group exhibited more than 30% improvement.
Lauro A. Mouch B. Chiropractic: The Journal of Chiropractic Research and Clinical Investigation. 1991; 6: 84-87