Participants’ characteristics and measures | Boys | Girls | Diff | ESa |
---|---|---|---|---|
Continuous variables | mean (SD) | mean (SD) | t | d |
Age, years | 13.9 (0.3) | 13.9 (0.3) |  − 1.1 | 0.00 |
BMI, kg/m2 | 20.0 (3.4) | 20.7 (3.3) |  − 2.1* | 0.21 |
PA levelb, cpm | 473.9 (217.8) | 499.0 (263.6) |  − 0.9 | 0.10 |
BREQ amotivation | 0.2 (0.6) | 0.2 (0.6) | 0.4 | 0.00 |
BREQ external regulation | 0.4 (0.6) | 0.4 (0.7) | 0.5 | 0.00 |
BREQ introjected regulation | 1.1 (1.1) | 1.2 (1.1) | 0.3 | 0.09 |
BREQ identified regulation | 2.1 (1.7) | 2.2 (1.1) | 1.6 | 0.07 |
BREQ intrinsic motivation | 2.5 (1.2) | 2.7 (1.2) | 2.0* | 0.17 |
CET total | 10.0 (4.0) | 9.3 (3.4) | 2.0* | 0.19 |
CET avoidance and rule-driven behaviour | 1.5 (1.2) | 1.3 (1.1) | 2.1* | 0.17 |
CET weight control | 1.9 (1.1) | 1.8 (1.2) | 1.8 | 0.09 |
CET mood improvement | 2.7 (1.3) | 2.6 (1.2) | 1.3 | 0.08 |
CET lack of enjoyment | 1.2 (1.1) | 1.2 (1.2) | 0.9 | 0.00 |
CET rigidity | 2.7 (1.3) | 2.6 (1.3) | 2.1 | 0.08 |
Categorical variables | N (%) | N (%) | χ2(1) | R |
---|---|---|---|---|
Weekly participation in exercise and/or sports | 264 (92) | 267 (94) | 1.2 | 0.04 |
Exercise arena: organized sports | 196 (68) | 230 (81) | 12.6*** | 0.15 |
Exercise arena: fitness training centre | 51 (18) | 31 (11) | 5.4* | 0.10 |
Use of exercise monitoring tools | 92 (32) | 107 (38) | 2.1 | 0.06 |
Weight gain attempts past 12Â months | 44 (15) | 19 (7) | 10.8*** | 0.14 |
Weight loss attempts past 12Â months | 39 (14) | 80 (28) | 18.6*** | 0.18 |
Meeting PA recommendationsb | 59 (38) | 61 (36) | 0.2 | 0.02 |
Above CET cut off score (CET ≥ 15) | 26 (9) | 16 (6) | 2.4 | 0.06 |