Question

Please summarize (1-2 pages )

Chapter 1. Physical Activity Behaviors: Steps, Bouts, and High Intensity Training

Answer 1

physical activity behaviour summary:-

steps nd bout : -The studies reviewed used simple pedometers providing accumulated steps and could neither address patterns nor intensity of steps per day. Additional physical activity assessment methods collecting these data should provide a better target for recommending physical activity volume. Based on the studies reviewed, randomized studies did not report on physical activity accumulated in bouts less than 10 minutes in duration, and only two prospective studies were identified that reported on physical activity accumulated in bouts less than 10 minutes. This may be a result of the methods used to assess physical activity in randomized and prospective studies, and suggests the need to include physical activity assessment methods that allow for these data to be available for analysis.

. High Intensity Interval Training
1. Conduct longer-term randomized controlled trials to assess the adherence to and the effects of high intensity interval training, compared to other types of physical activity programs, on physiological,morphological, and cardiometabolic health outcomes. They should address issues of dose-response and be of at least 6 months in duration. These randomized controlled trials should include diverse groups of adults who have overweight or obesity and/or who are at high risk of cardiovascular
disease or type 2 diabetes. They should systematically assess adverse events, including
musculoskeletal injuries, attributable to high intensity interval training, compared to other types of exercise training, among adults with a wide variety of health and disease characteristics.
Rationale: Most high intensity interval training intervention periods are less than 12 weeks, which may be insufficient time to assess the magnitude and sustainability of clinically-important changes in some physiological, morphological, and cardiometabolic health outcomes. The willingness andability of individuals to adhere to high intensity interval training programs is currently unknown.
Prescriptively designing these studies to include participants who have overweight or obesity and/or who are at high risk of cardiovascular disease or type 2 diabetes is important to inform health   promotion practitioners and policy leaders on the utility of recommending high intensity interval training for health among a large proportion of the U.S. adult population. At present, evaluation of the safety of high intensity interval training among adults with varied health and disease characteristics is compromised by the limited data available, in part, due to the low proportion of studies reporting adverse event.