WASHINGTON -- Staying active increases the chances that a person with diabetes will stay alive, a study finds.\r

Janet Thornburg pedals her way up a steep Georgia mountain. The sweat drips from her forehead as she leads other cyclists past the thick, dark woods. "C'mon guys! Five more seconds!" she shouts. The mountain is imaginary, but the burning muscles are real. Another Spinning session is under way at Health Central.

...can help you live longer," said exercise physiologist Steve Farrell, associate director of the Cooper Institute for Aerobics Research in Dallas. He was not involved in the study. The purpose of the study was to clarify the relationship between...