Table 1 Comparison of Two Groups in Performance Qualities

Volunteers

Control

52

68

46(88.5%)

38(55.9%)

6(11.5%)

30(44.1%)

49(94.2%)

42(61.8%)

3(5.8%)

26(38.2%)

50(95.5%)

37(54.4%)

2(4.5%)

31(45.6%)

X ²

P

23.27

<0.01

33.80

<0.01

31.40

<0.01