Table 4. Mediation analyses for associations between peer/parental variables and girls’ total PA level.
| Total PA level | ||||
|---|---|---|---|---|
| α (SE) | β (SE) | αβ (SE) | % mediated | |
| Peer modeling of PA | ||||
| Self-efficacy | 0.54 (0.09)*** | 9.94 (1.71)*** | 5.37 (1.29)*** | 51.6% |
| Benefit health | 0.27 (0.07)*** | 4.92 (2.31)* | 1.33 (0.71) | - |
| Benefit friends/new people | 0.39 (0.09)*** | 6.61 (1.73)*** | 2.58 (0.90)** | 24.8% |
| Benefit fun | 0.49 (0.09)*** | 7.00 (1.70)*** | 3.43 (1.05)** | 33.0% |
| Benefit better than others | 0.15 (0.10) | 3.73 (1.48)* | 0.56 (0.43) | - |
| Benefit not bored | 0.52 (0.09)*** | 4.29 (1.59)** | 2.23 (0.91)* | 21.2% |
| Benefit weight and body | 0.18 (0.10) | 3.39 (1.59)* | 0.61 (0.44) | - |
| Barrier time | -0.11 (0.11) | -0.73 (1.43) | 0.08 (0.18) | - |
| Barrier not liking | -0.55 (0.11)*** | -2.79 (1.38)* | 1.54 (0.82) | - |
| Barrier not good at it | -0.21 (0.11) | -2.55 (1.45) | 0.54 (0.41) | - |
| Barrier no transportation | -0.07 (0.11) | 1.03 (1.42) | -0.07 (0.15) | - |
| Barrier not allowed | -0.01 (0.10) | 1.88 (1.63) | -0.02 (0.19) | - |
| All significant mediators together | - | - | 6.50 (1.39)*** | 62.4% |
| Peer co-participation | ||||
| Self-efficacy | 0.38 (0.07)*** | 9.51 (1.66)*** | 3.61 (0.92)*** | 38.6% |
| Benefit health | 0.11 (0.05)** | 6.16 (2.18)** | 0.68 (0.39) | - |
| Benefit friends/new people | 0.35 (0.07)*** | 6.20 (1.73)*** | 2.17 (0.75)** | 23.2% |
| Benefit fun | 0.40 (0.07)*** | 6.54 (1.70)*** | 2.62 (0.82)** | 28.0% |
| Benefit better than others | 0.14 (0.08) | 3.99 (1.45)** | 056 (0.38) | - |
| Benefit not bored | 0.44 (0.07)*** | 4.09 (1.57)** | 1.80 (0.75)* | 18.9% |
| Benefit weight and body | 0.12 (0.07) | 3.82 (1.55)* | 0.46 (0.33) | - |
| Barrier time | -0.11 (0.08) | -1.06 (1.38) | 0.12 (0.17) | - |
| Barrier not liking | -0.33 (0.09)*** | -3.41 (1.31)** | 1.13 (0.53)* | 12.0% |
| Barrier not good at it | -0.22 (0.08)** | -2.54 (1.43) | 0.56 (0.38) | - |
| Barrier no transportation | 0.06 (0.08) | -0.06 (1.37) | -0.004 (0.08) | - |
| Barrier not allowed | -0.001 (0.72) | 1.99 (1.61) | -0.002 (1.43) | - |
| All significant mediators together | - | - | 4.12 (1.17)*** | 43.7% |
| Peer encouragement of PA | ||||
| Self-efficacy | 0.18 (0.06)** | 10.27 (1.56)*** | 1.85 (0.68)** | 23.9% |
| Benefit health | 0.04 (0.05) | 6.94 (2.17)** | 0.28 (0.36) | - |
| Benefit friends/new people | 0.13 (0.06)* | 7.54 (1.63)*** | 0.98 (0.50) | - |
| Benefit fun | 0.13 (0.06)* | 7.97 (1.57)*** | 1.04 (0.52)* | 13.3% |
| Benefit better than others | 0.04 (0.07) | 4.61 (1.45)** | 0.18 (0.33) | - |
| Benefit not bored | 0.21 (0.07)** | 5.30 (1.48)*** | 1.11 (0.48)* | 14.4% |
| Benefit weight and body | 0.21 (0.07)** | 3.13 (1.60) | 0.66 (0.40) | - |
| Barrier time | -0.12 (0.08) | -1.10 (1.39) | 0.13 (0.19) | - |
| Barrier not liking | -0.14 (0.08) | -4.19 (1.28)** | 0.59 (0.38) | - |
| Barrier not good at it | -0.08 (0.07) | -3.25 (1.42)* | 0.26 (0.25) | - |
| Barrier no transportation | -0.02 (0.08) | 0.36 (1.38) | -0.01 (0.04) | - |
| Barrier not allowed | 0.003 (0.06) | 1.91 (1.63) | 0.01 (0.12) | - |
| All significant mediators together | - | - | 1.93 (0.68)** | 25.0% |
| Parental modeling of PA | ||||
| Self-efficacy | 0.26 (0.07)*** | 10.91 (1.64)*** | 2.84 (0.88)** | 54.6% |
| Benefit health | 0.10 (0.05)* | 6.74 (2.27)** | 0.67 (2.27) | - |
| Benefit friends/new people | 0.16 (0.07)* | 7.90 (1.69)*** | 1.26 (0.62)* | 24.1% |
| Benefit fun | 0.16 (0.07)* | 8.30 (1.62)*** | 1.33 (0.64)* | 25.7% |
| Benefit better than others | 0.23 (0.08)** | 4.16 (1.54)** | 0.96 (0.49)* | 18.6% |
| Benefit not bored | 0.22 (0.08)** | 5.87 (1.53)*** | 1.29 (0.58)* | 25.1% |
| Benefit weight and body | 0.06 (0.07) | 4.35 (1.61)** | 0.26 (0.32) | - |
| Barrier time | -0.19 (0.08)** | -1.22 (1.45) | 0.23 (0.29) | - |
| Barrier not liking | -0.15 (0.09) | -4.50 (1.32)*** | 0.68 (0.45) | - |
| Barrier not good at it | -0.15 (0.08) | -3.29 (1.47)* | 0.49 (0.34) | - |
| Barrier no transportation | -0.07 (0.08) | 0.45 (1.43) | -0.03 (0.11) | - |
| Barrier not allowed | 0.12 (0.07) | 1.40 (1.70) | 1.72 (2.09) | - |
| All significant mediators together | - | - | 3.17 (0.94)*** | 61.7% |
| Parental co-participation in PA | ||||
| Self-efficacy | 0.33 (0.08)*** | 10.14 (1.62)*** | 3.35 (0.97)*** | 34.9% |
| Benefit health | 0.07 (0.06) | 6.73 (2.19)** | 0.47 (0.43) | - |
| Benefit friends/new people | 0.11 (0.08) | 7.85 (1.62)*** | 0.86 (0.65) | - |
| Benefit fun | 0.27 (0.08)*** | 7.62 (1.61)*** | 2.06 (0.75)** | 21.4% |
| Benefit better than others | 0.20 (0.09)* | 4.03 (1.48)** | 0.81 (0.47) | - |
| Benefit not bored | 0.28 (0.09)** | 5.35 (1.49)*** | 1.50 (0.64)* | 15.5% |
| Benefit weight and body | 0.07 (0.09) | 4.22 (1.56)** | 0.30 (0.40) | - |
| Barrier time | -0.07 (0.10) | -1.60 (1.39) | 0.11 (0.19) | - |
| Barrier not liking | -0.30 (0.11)** | -3.88 (1.31)** | 1.16 (0.58)* | 12.1% |
| Barrier not good at it | -0.28 (0.10)** | -2.60 (1.46) | 0.73 (0.48) | - |
| Barrier no transportation | 0.16 (0.10) | -0.42 (1.39) | -0.07 (0.23) | - |
| Barrier not allowed | 0.10 (0.09) | 1.32 (1.65) | 0.13 (0.20) | - |
| All significant mediators together | - | - | 4.18 (0.95)*** | 42.7% |
| Parental encouragement of PA | ||||
| Self-efficacy | 0.11 (0.06) | 10.80 (1.56)*** | 1.19 (0.67) | - |
| Benefit health | 0.06 (0.04) | 6.89 (2.21)** | 0.41 (0.31) | - |
| Benefit friends/new people | 0.10 (0.06) | 7.83 (1.65)*** | 0.78 (0.50) | - |
| Benefit fun | 0.05 (0.06) | 8.55 (1.57)*** | 0.43 (0.52) | |
| Benefit better than others | 0.05 (0.07) | 4.62 (1.48)** | 0.23 (0.33) | - |
| Benefit not bored | 0.07 (0.07) | 6.10 (1.47)*** | 0.43 (0.44) | - |
| Benefit weight and body | 0.27 (0.06)*** | 3.01 (1.66) | 0.81 (0.48) | - |
| Barrier time | -0.07 (0.07) | -1.46 (1.41) | 0.10 (0.14) | - |
| Barrier not liking | -0.20 (0.07)** | -4.09 (1.32)** | 0.82 (0.39)* | 13.7% |
| Barrier not good at it | -0.12 (0.07) | -3.15 (1.45)* | 0.38 (0.28) | - |
| Barrier no transportation | -0.05 (0.07) | 0.45 (1.40) | -0.02 (0.08) | - |
| Barrier not allowed | -0.13 (0.06)* | 3.04 (1.67) | -0.40 (0.28) | - |
PA, physical activity
* p<0.05
** p<0.01
*** p<0.001