According to the Centers for Disease Control and Prevention (CDC 2009), by 2030 the portion of the U.S. population aged 65 and older will double to about 71 million. The growing number of older Americans will put unique demands on public health, aging services and the nation’s healthcare system. The CDC suggests that chronic diseases (e.g., cardiovascular disease, stroke, cancer and diabetes) place a profound health and economic burden on older adults, owing to associated long-term illness, diminished quality of life and greater healthcare costs.
In his research paper, Hill notes that body weight and obesity are increasing in all segments of the population in most, if not all, countries around the world. Further, although most people are aware that
a sedentary existence, combined with overeating, has negative health consequences, many are not able to make and sustain the changes to combat this way of life. Moreover, most people who do achieve weight loss goals regain the weight over time. Is it inevitable that our society will eventually be obese?
Muscle hypertrophy, or muscle cell enlargement, is a topic of great debate and interest in all fields of health, fitness and sports. How the body responds to muscular overload to elicit muscle growth is still under much scientific investigation.
Garber, C.E., et al. 2011. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: Guidance for prescribing exercise. Medicine & Science in Sports & Exercise, 43 (7), 1334–59.
According to the U.S. Department of Health and Human Services (HHS), children and teens should be physically active for at least 60 minutes on most, if not all, days of the week. This recommendation states that the 60 minutes may be accrued in “smaller chunks” of time throughout the day (HHS 2010). However, Troiano et al. (2008) report that only 8% of youth aged 12–19 years are active for a full 60 minutes per day.