by Patrick Appel
Just why stretching hampers performance is not fully understood, although the authors of both of the new studies write that they suspect the problem is in part that stretching does exactly what we expect it to do. It loosens muscles and their accompanying tendons. But in the process, it makes them less able to store energy and spring into action … Of course, the new studies’ findings primarily apply to people participating in events that require strength and explosive power, more so than endurance. But “some research speaks in favor” of static stretching impairing performance in distance running and cycling, [Dr. Goran Markovic, a professor of kinesiology at the University of Zagreb] said.