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Table 5 Mediating effects on the intermediate-term (pre-follow up) intervention effects on change in physical activity (PA) behaviors

From: Mediators of physical activity change in a behavioral modification program for type 2 diabetes patients

 

Steps/day

Self-reported active transport

Self-reported PA house + garden

Self-reported leisure-time PA

Self-reported total PA

Ï„ (SE)

2491.98 (617.29)

51.41 (28.61)

190.78 (61.62)

55.62 (29.08)

283.46 (62.76)

p

< .001

.076

.003

.059

<.001

Mediator: change in self-efficacy towards barriers of PA

Ï„' (SE)

2313.21 (684.59)

32.15 (32.69)

178.66 (71.05)

46.82 (32.95)

253.65 (71.46)

p

.001

.329

.014

.160

.001

Ï„ - Ï„'

178.77

19.26

12.12

8.80

29.81

t

1.11

3.16*

.70

1.12

2.00*

Proportion mediated

 

44.3%

  

10.5%

Mediator: change in social support from family

Ï„' (SE)

2331.57 (698.80)

36.24 (33.52)

146.75 (70.91)

40.21 (33.07)

226.30 (69.31)

p

.001

.283

.042

.228

.002

Ï„ - Ï„'

160.41

15.27

44.03

15.41

57.16

t

1.07

2.37*

2.54*

2.16*

4.07*

Proportion mediated

 

29.5%

23.1%

27.7%

20.2%

Mediator: coping with relapse

Ï„' (SE)

2419.71 (662.78)

36.83 (30.89)

205.54 (67.33)

52.28 (31.38)

277.75 (68.40)

P

<.001

.237

.003

.100

<.001

Ï„ - Ï„'

72.27

14.58

-14.76

3.34

5.71

t

.55

2.06*

.96

.49

.37

Proportion mediated

 

28.4%

   
  1. *p < .05
  2. Ï„ = relationship between intervention condition and outcome measure before adjusting for mediator
  3. Ï„' = relationship between intervention condition and outcome measure after adjusting for mediator
  4. SE = standard error
  5. Note: in all analyses, the total sample (n = 92, both control group and intervention group) was included
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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