In order to study some biochemical variables on the increasing aerobic physical stress-test, researchersselected a sample of individuals represented by Anbar University football team 16 players who underwentthis study. The researchers used descriptive approach in their research. research experiment includedtaking blood samples before and after escalating exertion Treadmill device toknow effect ...

Fifteen subjects recovering from a myocardial infarction or suffering from angina were given a maximum effort test on a bicycle ergometer and hemodynamic and angiographic investigations before and after a period of physical training. The training program consisted of three sessions of 60 to 75 min each week for two months. Maximum effort tests showed that physical capacity had increased by 17% ...

Using basic psychological needs theory (BPNT; Ryan & Deci, 2000) as our guiding framework, we explored cultural differences in the relationships among physical education students' perceptions of teacher autonomy support, psychological need satisfaction, subjective vitality and effort in class. Seven hundred and fifteen students (age range from 13 to 15 years) from the U.K. and Hong Kong, China,...