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Exercise and Fitness

Sticky Protein Reinforces Fragile Muscle Membranes

Jul 24 2009 - 1:18pm

A new study by scientists at the University of Iowa shows why muscle membranes don't rupture when healthy people exercise.

The findings shed light on a mechanism that appears to protect cells from mechanical stress. The study, which appears online July 20-24 in Proceedings of the National Academy of Sciences (PNAS) Early Edition, also helps explain why muscle damage is so severe when this mechanism is disrupted, which occurs in certain congenital and limb-girdle muscular dystrophies.

How Exercise Affects Body Image In Women

Jul 14 2009 - 12:28pm

Researchers from the Centre for Appearance Research at the University of the West of England are looking for female participants for a study investigating the relationship between exercise and body image. Dr James Byron-Daniel and MSc Research methods student, Nicola Stock will explore how small amounts of exercise make women feel about how they look and hope that the study will shed new light on an area where there is currently very little research.

Adolescents Let Physical Activity Slide After 7th Grade

May 28 2009 - 10:51am

By the time they reach ninth grade, most adolescents abandon the physical activities they enjoyed in seventh grade; and the more vigorous the activity, the more likely they are to drop it.

Although some older adolescents rekindle their interest, it still does not return to seventh-grade levels, according to a study in the July issue of the American Journal of Preventive Medicine.