Table 2 Overall effects of exercise training (groups combined n=25)

Primary Outcome Measures

Child’s report of mean knee pain over the week ¹

39.4(14.2)

24.2 (18.4)

−14.5

−5.2

−23.8

0.004*

0.89

Child’s report of maximum knee pain over the week ¹

55.5(18.8)

37.4 (27.5)

−18.1

−6.7

−29.4

0.003*

0.78

Secondary Outcome Measures

Child Reported Measures

PGIC²

.23 (1.04)

1.77 (.91)

1.53

1.03

2.04

<0.001*

1.57

CHAQ 38³

−0.05 (0.57)

0.02 (0.66)

0.066

−0.11

0.24

0.433

0.11

Physical Measures

Overall thigh strength (N)

4.19 (2.02)

5.25 (1.99)

1.06

0.39

1.72

0.004*

0.53

No. of flights of stairs ran in 2 minutes

18.6 (5.73)

20.33 (5.49)

1.73

−0.48

3.94

0.11

0.29

Parent Reported Measures (CHQ-PF50) ⁴

Physical Summary Score

37.97 (12.56)

43.31 (11.26)

5.34

1.73

8.94

0.002*

0.45

Psychosocial summary score

48 (10.25)

50.73 (11)

2.73

−0.33

5.8

0.03*

0.26