Fitness at large: physical activity programs for obese older adults by Heather O. Chambliss, PhD, and Steven N. Blair, PED
In the United States today, current health initiatives focus on the prevention and treatment of obesity, a public health problem that has gained widespread attention. Obesity is typically classified according to body mass index (BMI), a measurement that equals weight in kilograms divided by height in meters squared. A BMI greater than 30 kg/m2 indicates obesity.

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