NTR 109 Lecture Notes - Lecture 12: Phosphocreatine, Performance-Enhancing Substance, Exercise Intensity
11 Feb 2016
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Document Summary
Any movement produced by skeletal muscles that requires energy expenditure. Physical inactivity has been identified as the fourth leading risk factor for global mortality causing an estimated 3. 2 million deaths globally. Physical activities that r planned, repetitive & intended to improve physical fitness. Examples: going for run, taking a yoga class. Increasing levels of physical inactivity are seen worldwide. Barriers to movement: technology tv, computer, phones, school limited movement, safety, busy schedule. Stroke, colon & breast cancer & depression. Given what we know about the health benefits of physical activity, it should be mandatory to get a doctor"s permission not to exercise. To reduce risk of chronic disease 30 minutes of moderate exercise (5 days a week or 150 total minutes) To maintain body weight and prevent weight gain - 60 minutes daily. To sustain weight loss 60-90 minutes daily. Chemical energy used by cells for muscle contractions. Only small amount is stored in resting cells (2-5 seconds)
