Skip to main content

Table 6 Mediating effects of psychological need satisfaction on changes in objectively assessed daily step count

From: Short- and long-term effectiveness of a three-month individualized need-supportive physical activity counseling intervention at the workplace

  Short-term (3 months) Long-term (9 months)
  α-path β-path αβ-path α-path β-path αβ-path
Mediator variables B (SE) B (SE) B (95% CI) B (SE) B (SE) B (95% CI)
Need satisfaction
 Autonomy
 Weekday steps 0.24 (0.15) 620.97 (196.74)** 151.57 (-0.47–421.36) 0.37 (0.16)* 410.34 (221.57) 151.43 (13.64–419.73)*
 Average day steps 0.23 (0.15) 436.83 (176.81)* 100.83 (-3.33–76.86) 0.36 (0.16)* 538.01 (195.02)** 195.68 (29.42–510.41)*
 Competence
 Weekday steps 0.40 (0.17)* 626.11 (168.59)*** 249.93 (76.80–541.99)* 0.34 (0.18) 514.84 (198.98)* 173.22 (20.86–454.86)*
 Average day steps 0.39 (0.17)* 498.37 (151.38)** 196.23 (50.97–433.38)* 0.34 (0.18) 576.19 (176.03)** 194.44 (25.47–447.12)*
 Relatedness
 Weekday steps 0.06 (0.19) 517.67 (151.04)*** 28.85 (-145.65–240.08) 0.12 (0.21) -63.58 (172.17) -7.53 (-137.01–38.26)
 Average day steps 0.04 (0.19) 365.89 (136.62) 13.92 (-104.44–166.38) 0.08 (0.22) 88.76 (150.16) 7.08 (-33.93–134.05)
 Total needsa
 Weekday steps 0.23 (0.13) 942.42 (212.80)*** 219.59 (3.51–508.61)* 0.27 (0.14)* 431.44 (261.95) 118.50 (9.61–366.94)*
 Average day steps 0.22 (0.14) 695.09 (192.17)*** 153.53 (0.65–394.47)* 0.26 (0.14) 646.93 (230.33)** 168.41 (15.44–431.02)*
  1. α, estimate of the intervention effect on changes in the proposed mediators; β, estimate of the direct effect of changes in the proposed mediators on changes in daily step count while controlling for the intervention effect; αβ, estimate of the indirect effect of the intervention on changes in daily step count through the proposed mediators; 95% CI, 95% bias-corrected and accelerated confidence interval based on 2000 bootstrap resamples
  2. B Unstandardized regression coefficient, SE Standard error
  3. *p < .05, **p < .01, ***p < .001
  4. acomposite variable of autonomy, competence and relatedness need satisfaction