The Cardiovascular System. 1  Intro to the Heart. 2  Blood Flow of the Heart (Circulation Flow) 3  Myocardium. 4  Conducting System of the Heart (Nervous Impulse Flow) 5  The Four Corners of the Heart. 6  Layers of the Pericardium, Heart Wall and Spiral Arrangement. 7  Function of the Atrioventricular and Semilunar Valves.
Adhering to precise execution standards in the conduct of all PRT activities ensures the development of body management and fundamental movement skills. PROGRESSION. Progression is the systematic increase in the intensity, duration, volume, and difficulty of PRT activities. The proper progression of PRT activities allows the body to positively adapt to the stresses of training. When progression is violated by too rapid an increase in intensity, duration, volume or difficulty the Soldier is unable to adapt to the demands of training.
In 1996, the American College of Sports Medi-cine and the Centers for Disease Control and Preven-tion (CDC) recommended that every adult in theUnited States accumulate 30 minutes or more of mod-erate-intensity physical activity on most, preferably all,days of the week.eprinted by permission of Elsevier Science from: The effectiveness of interventions to increase physical activity. Kahn EB, Ramsey LT, Brownson R, Heath GW, Howze EH, Powell KE, Stone EJ, Rajab MW, Corso P, Task Force on Community Preventive Services., American Journal of Prevention Medicine. Vol 22 No 4S, pp 73-107.