Реферат: Sports Medicane Essay Research Paper The Sports

illnesses causing restriction of normal activity were recorded on separate check-off forms.

Reports were received each of the 6 months from all subjects. The subjects accumulated

3209 exercise sessions, totaling 2631 hrs. The predominant activities were running (2128

sessions; 1780 hrs; 19,638 km), weightlifting (357 sessions; 181 hrs), walking (228

sessions; 195 hrs; 1064 km) and cycling (109 sessions; 78 hrs; 1992 km). All other

exercise activities (e.g., tennis, swimming, rowing, water running) totaled 388 sessions

and 397 hrs. The subjects averaged 4.0 hrs/week of exercise in 4.9 sessions/week of 49

min/session. Two-thirds of the sessions involved running, and 21 subjects ran regularly.

These subjects ran an average of 3.9 times/week, 50.2 min/session, 38.2 km/week, 9.3

km/session at 5:24/km pace. While running was the predominant activity in this sample,

each subject participated regularly in an average of 2.2 different exercise activities, and

participated at least once in an average of 3.4 different activities during the period of this

study. There were 30 time-loss injuries attributed to exercise in this sample, 23 involving

the lower extremities. One-third of the total injuries involved the knee. There were 9.3

injuries/1,000 exercise sessions or 11.4 injuries/1,000 hrs of exercise. Each injury lasted an

average of 10.7 days before return to unrestricted activity. However, many injuries

resulted in modification of activity (e.g., decreased frequency, distance, pace, or doing

alternative activities) rather than complete restriction of exercise. During this period there

were 10 injuries recorded that did not involve exercise, 5 being lower back strains, with an

average time-loss of 17.2 days. There also were 17 illnesses reported, primarily colds and

flu, with an average time-loss of 7.4 days. Based on the results from this small pilot study,

a middle-aged exerciser can expect 2.4 exercise-related injuries per year with a total of

25.8 days of modified or restricted activity, 0.8 non-exercise injuries per year with 13.8

days of restricted activity, and 1.4 illnesses affecting 10.4 days. On the average, this

middle-aged exerciser can expect 4.6 injury or illness episodes affecting 50 days each year.

Twenty-five volunteer subjects were obtained from the local community (Eugene-

Springfield, Oregon USA). They were all regularly exercising adults (19 male, 6 female)

ranging in age from 43 to 70 years old (mean age = 54.0 years). Each subject signed an

informed consent form and received a set of forms for recording daily exercise activity,