American College of Sports Medicine, May 31-June 4, 2011Last Updated: June 07, 2011.
The American College of Sports Medicine 58th Annual Meeting and 2nd World Congress on Exercise is Medicine was held from May 31 to June 4 in Denver and attracted more than 6,000 participants from around the world. The conference highlighted recent advances in exercise science and sports medicine, with presentations focusing on the advancement and integration of scientific research to improve clinical practice.
In one study, Charles Dumke, Ph.D., of the University of Montana in Missoula, and colleagues found that, under controlled two-hour fasting conditions, trained athletes with type 1 diabetes oxidized fat at greater rates than age- and gender-matched controls without diabetes. The investigators tested 19 females and 10 males with diabetes for aerobic capacity and measured metabolic data during stationary cycle or treadmill tests to exhaustion.
"Under certain conditions, type 1 diabetics may oxidize fuels (carbohydrates and fat) differently than nondiabetics. The challenge for exercising type 1 diabetics is the maintenance of blood glucose under conditions where both exercise and insulin are stimulating glucose uptake into muscle," Dumke said. "Many type 1 diabetics are in fear of hypoglycemia during exercise; however, they benefit from exercise training similarly to the general population in the maintenance of body weight, reduction in heart disease, and reduction in peripheral vascular disease."
In another study, Denise Feda, Ph.D., of the University of Buffalo in New York, and colleagues found that increasing the choice of active toys a child has access to can increase their total minutes of play as well as their intensity of play, especially among girls. The investigators evaluated the effects of three toy quantities (one, three, and five toys) on the activity levels of 36 children aged 8 to 12 years.
"Overall play time (95 percent increase) and average accelerometer counts/minute (85 percent increase) were greater in the three- and five-toy groups than the no-variety group," Feda said.
In addition, heart rate data revealed that providing choice of active toys increased the intensity of play in girls more than boys.
"Girls can be motivated to engage in equal physical activity as boys by simply providing them with a greater choice of active toys," Feda said.
Erika Smith, L.M.F.T., C.T.S., of the University of West Florida in Pensacola, and colleagues found that aerobic exercise may be beneficial as an adjunct treatment for individuals diagnosed with post-traumatic stress disorder (PTSD) and/or a history of having experienced trauma. The investigators evaluated 14 participants recruited naturalistically from a Certified Rape Crisis Center. All participants attended biweekly cognitive behavioral therapy sessions, and seven of the participants also attended a minimum of two group circuit training classes per week. Exercise sessions were 40 minutes long.
"The results revealed that both groups (the group engaging in cognitive behavioral therapy and the group engaging in cognitive behavioral therapy plus group aerobic exercise sessions) improved [on] all measures," Smith said. "Although our results did not reveal a statistically significant difference between the therapy and the therapy plus exercise groups, clinical significance was observed: More participants engaging in therapy plus exercise exhibited a 10+ point reduction in [the] PTSD Checklist -- Specific Versions score, indicating a clinically significant reduction/improvement in their symptoms of PTSD. There was also a trend on most measures in favor of the therapy plus exercise group."
A study led by Felipe Lobelo, M.D., Ph.D., of the U.S. Centers for Disease Control and Prevention in Atlanta, revealed that active, healthy medical students were more likely to prescribe physical activity in their future practices.
"This was the first study to objectively measure the quality of care and counseling that medical students report they will provide to future patients based on their overall well-being and personal health status. We evaluated medical school students' cardiovascular risk profiles, lipid levels, waist circumference, fasting glucose, and aerobic fitness levels and correlated that with future patient counseling regarding physical activity," Lobelo said.
The data revealed that students who were fit and had healthier cardiovascular profiles were more likely to be positive toward counseling patients on being healthy and active.
"Overall, if a physician is active and has a healthy fitness level, they are more likely to provide better counseling and can be more motivating to a patient to be more active, too," Lobelo said.
ACSM: Vascular Function Not Worse on High-Fat Low-Carb Diet
FRIDAY, June 3 (HealthDay News) -- After consuming a high-fat meal, endothelial function is unchanged and arterial stiffness is reduced, and following a low-carbohydrate diet, no detectable impairment on vascular function is found, according to two studies presented at the annual meeting of the American College of Sports Medicine, held from May 31 to June 4 in Denver.