Table 2

Changes in Process Variables for Intervention and Comparison Participants in an Intensive Randomized Exercise Intervention Trial

Baseline
 3-month follow up
 12-month follow up

Unadjusted (std. dev.)
 Unadjusted (std. dev.)
 P1
 Unadjusted (std. dev.)
 P1
Perceived stress




Between Groups

0.98
0.36
Within Intervention (N = 87)
 79.38 (16.95)
 78.59 (17.04)
 0.63
 78.13 (18.20)
 0.53
Within Control (N = 86)
 78.42 (16.03)
 77.53 (15.28)
 0.64
 79.39 (16.02)
 0.50
Social support – overall




Between Groups

0.23
0.37
Within Intervention (N = 87)
 80.26 (19.83)
 78.74 (21.46)
 0.37
 79.49 (20.78)
 0.72
Within Control (N = 86)
 75.62 (23.94)
 76.70 (20.03)
 0.43
 77.08 (20.08)
 0.35
Social support – tangible




Between Groups

0.30
0.40
Within Intervention (N = 87)
 80.03 (25.89)
 76.72 (26.49)
 0.17
 79.42 (25.64)
 0.79
Within Control (N = 86)
 74.71 (27.98)
 74.55 (25.41)
 0.93
 76.64 (24.45)
 0.36
Social support – affection




Between Groups

0.06
0.04
Within Intervention (N = 86)
 83.14 (26.41)
 80.75 (27.41)
 0.46
 79.88 (27.90)
 0.29
Within Control (N = 86)
 79.65 (28.57)
 84.23 (23.85)
 0.04
 84.23 (23.54)
 0.05
Social support – emotional




Between Groups

0.63
0.97
Within Intervention (N = 87)
 79.41 (23.11)
 78.54 (22.79)
 0.65
 79.47 (23.28)
 0.86
Within Control (N = 86)
 74.13 (27.86)
 74.31 (24.92)
 0.81
 74.60 (25.21)
 0.79
Knee pain




Between Groups

0.50
0.91
Within Intervention (N = 86)
 85.27 (20.84)
 78.16 (27.76)
 <0.01
 76.83 (29.49)
 0.02
Within Control (N = 86)
 81.78 (23.24)
 76.98 (28.33)
 0.11
 73.41 (32.22)
 0.01

1P-values for each variable correspond to (top to bottom) between groups differences and within groups change from the previous timepoint.

†Higher scores indicate better state of being (e.g., more social support, less pain)

Bowen et al. International Journal of Behavioral Nutrition and Physical Activity 2006 3:34   doi:10.1186/1479-5868-3-34

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