Table 1. Changes in self-appraisal, mood, and days of voluntary moderate-to-vigorous physical activity over 12 weeks. Data are means (±SD).
Baseline
Week 12
t
p
d
Treatment group (n=146)
Self-appraisal measure
General self
28.4 (5.3)
29.5 (4.8)
3.00
.003
.19
Physical appearance
31.2 (5.8)
32.5 (5.8)
3.73
<.001
.23
Physical self-concept
35.0 (5.5)
35.7 (5.5)
1.99
.05
.14
Exerc. barriers self-efficacy
26.5 (9.4)
28.7 (9.8)
4.53
<.001
.23
Mood Measure
Tension
11.9 (4.5)
10.1 (4.5)
-6.87
<.001
.42
Vigor
15.9 (4.6)
17.1 (4.3)
3.94
<.001
.26
Voluntary phys. activity days/week
2.3 (1.8)
3.3 (1.8)
7.09
<.001
.58
Control group (n=123)
Self-appraisal measure
General self
29.5 (5.7)
29.6 (6.4)
.84
.40
.01
Physical appearance
31.0 (6.0)
31.1 (6.1)
.63
.63
.03
Physical self-concept
33.0 (4.6)
33.2 (5.9)
.41
.68
.04
Exerc. barriers self-efficacy
27.3 (8.5)
27.4 (8.2)
.29
.77
.01
Mood Measure
Tension
11.4 (4.6)
11.6 (4.9)
.59
.56
-.04
Vigor
16.3 (5.4)
15.7 (5.6)
-1.10
.27
-.11
Voluntary phys. activity days/week
2.3 (1.6)
2.5 (2.2)
.97
.33
.09
General self and physical appearance are scales of the Self-Description Questionnaire-I. Physical self-concept is a scale of the Tennessee Self-Concept Scale: 2. Tension and vigor are scales of the Profile of Mood States - Short Form. Exerc. barriers self-efficacy = Exercise Barriers Self-Efficacy Scale for Children. Voluntary physical activity days/week refers to recalled number of days in the previous week where moderate-to-vigorous physical activity was completed outside of PE and after-school care programming. SD = standard deviation; d = Cohen’s measure of effect size. Treatment group df=144; Control group df= 121.