Examining social-cognitive theory constructs as mediators of behaviour change in the active team smartphone physical activity program: a mediation analysis

Table 3 Results of the mediation model for objectively measured MVPA. N = 222

Hypothesised mediator	A (SE)	B (SE)	C (SE)	C′ (SE)	AB (SE) [95% CI]
Change in self-efficacy	0.057 (0.054)	5.340 (3.918)	1.985 (3.125)	1.671 (3.127)	0.313 (0.376) [−0.23, 1.204]
Change in intentions	−0.007 (0.055)	− 0.323 (3.835)	1.985 (3.125)	1.983 (3.133)	0.002 (0.224) [−0.574, 0.481]
Change in outcome expectations	−0.135 (0.036)* ^∧	9.803 (5.896)	1.985 (3.125)	3.312 (3.214)	−1.328 (1.178) [−4.244, 0.287]
Change in perceived barriers	−0.017 (0.044)	4.423 (4.811)	1.985 (3.125)	2.061 (3.128)	−0.076 (0.376) [− 0.980, 0.574]
Change in goals	0.109 (0.070)	0.856 (3.059)	1.985 (3.125)	1.891 (3.150)	0.093 (0.326) [−0.589, 0.768]

Note: * denotes: P < 0.05, ^∧ denotes: P remains significant after Holm’s Bonferroni adjustment
SE Standard Error, CI Confidence Interval
MVPA moderate-to-vigorous physical activity
A = intervention allocation effect on mediators
B = association between mediators and change in objectively measured MVPA
C = total effect model
C′ = direct effect of intervention allocation on change in objectively measured MVPA
AB = indirect effect of intervention allocation on change in objectively measured MVPA through the hypothesised mediator

ISSN: 1471-2458