Scales (n items and % of variance explained by these items) |
Validity (Confirmatory Factorial Analysis) |
|
Reliability |
|
Mean (SD) |
Factor loading |
Parameters of model fit |
|
α
|
|
CR |
|
ICC |
|
95%CI |
|
1 |
|
2 |
|
Scales of Intrapersonal Variables |
|
|
Attitude regarding engaging in PA (5 items, 52.7%) |
|
15.91 (2.51) |
|
- |
|
- |
|
X2 (df=4)=6,34, p=0.17 CMIN/DF=1,58 CFI=0.99; NFI=0.99 RMSEA= 0.022 (90%CI: 0.000; 0.053) |
|
0.77 |
|
0.77 |
|
0.62 |
|
0.56; 0.68 |
1a.Unimportant/important |
|
3.27 (0.79) |
|
0.60 |
|
- |
|
0.73 |
|
|
|
0.72 |
|
0.62; 0.83 |
1b. Unsafe/safe |
|
2.99 (0.67) |
|
0.52 |
|
- |
|
0.75 |
|
|
|
0.63 |
|
0.54; 0.70 |
1c. Bad/good |
|
3.26 (0.70) |
|
0.80 |
|
- |
|
0.70 |
|
|
|
0.58 |
|
0.49; 0.66 |
1d. Harmful/healthy |
|
3.32 (0.57) |
|
0.56 |
|
- |
|
0.75 |
|
|
|
0.65 |
|
0.56; 0.71 |
1e. Boring/fun |
|
3.07 (0.75) |
|
0.67 |
|
- |
|
0.73 |
|
|
|
0.59 |
|
0.51; 0.67 |
Perception of self-efficacy regarding engaging in PA (8 items, 47.2%) |
|
21.03 (3.19) |
|
- |
|
- |
|
X2(df=19)=42.03, p<0.01 CMIN/DF=2,21 CFI=0.98; NFI=0.97 RMSEA=0.032 (90%CI: 0.019; 0.045) |
|
0.81 |
|
0.77 |
|
0.70 |
|
0.65; 0.74 |
Self-efficacy (individual and social barriers) |
|
12.79 (2.39) |
|
- |
|
- |
|
0.76 |
|
0.62 |
|
0.65 |
|
0.59; 0.70 |
2a. Lack of company |
|
2.58 (0.74) |
|
0.46 |
|
- |
|
0.73 |
|
|
|
0.67 |
|
0.56; 0.81 |
2b. Demotivated |
|
2.46 (0.74) |
|
0.47 |
|
- |
|
0.74 |
|
|
|
0.66 |
|
0.55; 0.80 |
2c. Screen access in free-time |
|
2.63 (0.79) |
|
0.54 |
|
- |
|
0.74 |
|
|
|
0.62 |
|
0.53; 0.72 |
2d. Invitation to do other things by friends |
|
2.56 (0.73) |
|
0.49 |
|
- |
|
0.73 |
|
|
|
0.64 |
|
0.57; 0.72 |
2e. Laziness |
|
2.55 (0.81) |
|
0.51 |
|
- |
|
0.72 |
|
|
|
0.54 |
|
0.48; 0.64 |
Self-efficacy (resources to PA practice) |
|
7.98 (2.90) |
|
- |
|
- |
|
0.64 |
|
0.65 |
|
0.65 |
|
0.59; 0.72 |
3a. Lack of PA skills |
|
2.71 (0.75) |
|
- |
|
0.63 |
|
0.58 |
|
|
|
0.70 |
|
0.59; 0.80 |
3b. Lack of PA places near home |
|
2.69 (0.74) |
|
- |
|
0.62 |
|
0.56 |
|
|
|
0.68 |
|
0.60; 0.76 |
3c. Lack of instruction |
|
2.58 (0.74) |
|
- |
|
0.60 |
|
0.57 |
|
|
|
0.64 |
|
0.57; 0.72 |
Scales of Interpersonal Variables |
|
|
Support of friends (5 items, 68.3%) |
|
11.46 (4.61) |
|
- |
|
- |
|
X2 (df=3)=12.48, p<0.01 CMIN/DF=4.16 CFI=0.99; NFI=0.99 RMSEA=0.052 (CI 90%:0.024;0.083) |
|
0.90 |
|
0.88 |
|
0.66 |
|
0.62; 0.69 |
4a. Encouragement |
|
2.20 (1.10) |
|
0.76 |
|
- |
|
0.88 |
|
|
|
0.61 |
|
0.53; 0.69 |
4b. PA practice together |
|
2.49 (1.12) |
|
0.85 |
|
- |
|
0.87 |
|
|
|
0.67 |
|
0.58; 0.76 |
4c. Invitation to PA with them |
|
2.56 (1.12) |
|
0.79 |
|
- |
|
0.87 |
|
|
|
0.63 |
|
0.52; 0.71 |
4d. Observation (watching) |
|
2.16 (1.12) |
|
0.77 |
|
- |
|
0.88 |
|
|
|
0.71 |
|
0.62; 0.79 |
4e. Positive comments |
|
2.04 (1.10) |
|
0.70 |
|
- |
|
0.87 |
|
|
|
0.63 |
|
0.56; 0.70 |
Support of parents (6 items, 54.6%) |
|
11.08 (4.33) |
|
|
|
|
|
X2 (df=7)=21.38, p<0.01 CMIN/DF=3.05 CFI =0.99; NFI = 0.99 RMSEA= 0.042 (90%CI: 0.022; 0.063) |
|
0.83 |
|
0.83 |
|
0.62 |
|
0.56; 0.65 |
5a. Encouragement |
|
2.37 (1.09) |
|
0.58 |
|
- |
|
0.81 |
|
|
|
0.66 |
|
0.57; 0.74 |
5b. PA practice together |
|
1.51 (0.79) |
|
0.68 |
|
- |
|
0.81 |
|
|
|
0.64 |
|
0.57; 0.72 |
5c. Providing transport to PA |
|
1.68 (0.99) |
|
0.56 |
|
- |
|
0.82 |
|
|
|
0.62 |
|
0.55; 0.70 |
5d. Observation (watching) |
|
1.59 (0.87) |
|
0.69 |
|
- |
|
0.80 |
|
|
|
0.59 |
|
0.50; 0.67 |
5e. Positive comments |
|
1.89 (1.03) |
|
0.82 |
|
- |
|
0.78 |
|
|
|
0.56 |
|
0.48; 0.63 |
5f. Conversation (talking) |
|
2.03 (1.08) |
|
0.69 |
|
- |
|
0.78 |
|
|
|
0.63 |
|
0.56; 0.69 |
Support of the school’s teachers (5 items, 59.3%) |
|
11.10 (4.12) |
|
- |
|
- |
|
X2 (df=5)=23.56, p<0.001 CMIN/DF= 4.71 CFI=0.99; NFI=0.98 RMSEA= 0.056 (90%CI: 0.035; 0.080) |
|
0.84 |
|
0.83 |
|
0.69 |
|
0.65; 0.73 |
6a. Encouragement |
|
2.42 (1.08) |
|
0.62 |
|
- |
|
0.83 |
|
|
|
0.70 |
|
0.62; 0.77 |
6b. Invitation to PA with them |
|
2.00 (1.08) |
|
0.67 |
|
- |
|
0.81 |
|
|
|
0.66 |
|
0.58; 0.71 |
6c. Supervision (watching) |
|
2.32 (1.09) |
|
0.72 |
|
- |
|
0.81 |
|
|
|
0.64 |
|
0.55; 0.70 |
6d. Positive comments |
|
2.01 (1.02) |
|
0.77 |
|
- |
|
0.81 |
|
|
|
0.67 |
|
0.58; 0.71 |
6e. Conversation (talking) |
|
2.35 (1.09) |
|
0.72 |
|
- |
|
0.82 |
|
|
|
0.61 |
|
0.53; 0.68 |
Scales of Perceived Environment Variables |
|
|
|
|
|
X2 (df=32)=65.41, p<0.001 CMIN/DF= 2.04 CFI=0.98; NFI=0.97 RMSEA=0.030 (90%CI: 0.019; 0.040) |
|
|
|
|
|
|
|
|
Perceived Neighborhood Environment (PCE) scales regarding engaging in PA (10 items, 47.6%) |
|
24.52 (4.09) |
|
|
|
|
|
0.75 |
|
0.83 |
|
0.62 |
|
0.58; 0.66 |
PNE (safety and general state of maintenance) |
|
12.24 (2.79) |
|
|
|
|
|
0.73 |
|
0.69 |
|
0.58 |
|
0.56; 0.62 |
7a. Pollution |
|
2.52 (0.85) |
|
- |
|
0.60 |
|
0.69 |
|
|
|
0.64 |
|
0.57; 0.70 |
7b. Condition of sidewalks |
|
2.55 (0.78) |
|
- |
|
0.55 |
|
0.70 |
|
|
|
0.64 |
|
0.57; 0.69 |
7c. Safety for walking |
|
2.47 (0.80) |
|
- |
|
0.54 |
|
0.69 |
|
|
|
0.62 |
|
0.53; 0.69 |
7d. General safety |
|
2.17 (0.85) |
|
- |
|
0.59 |
|
0.69 |
|
|
|
0.57 |
|
0.49; 0.66 |
7e. Safety for cycling |
|
2.53 (0.81) |
|
- |
|
0.48 |
|
0.71 |
|
|
|
0.58 |
|
0.49; 0.66 |
PNE (access to PA facilities) |
|
12.17 (2.62) |
|
- |
|
- |
|
0.78 |
|
0.74 |
|
0.67 |
|
0.64; 0.71 |
8a. PA facilities |
|
2.22 (0.82) |
|
0.65 |
|
- |
|
0.74 |
|
|
|
0.65 |
|
0.59; 0.70 |
8b. PA practice by peers |
|
2.53 (0.79) |
|
0.50 |
|
- |
|
0.76 |
|
|
|
0.63 |
|
0.57; 0.70 |
8c. PA places (e.g.,parks) |
|
2.51 (0.85) |
|
0.74 |
|
- |
|
0.74 |
|
|
|
0.61 |
|
0.56; 0.68 |
8d. Proximity of PA places |
|
2.44 (0.87) |
|
0.62 |
|
- |
|
0.75 |
|
|
|
0.85 |
|
0.76; 0.92 |
8e. General appearance |
|
2.47 (0.80) |
|
0.49 |
|
- |
|
0.76 |
|
|
|
0.64 |
|
0.58; 0.70 |
PSE (PA facilities, 3 items, 56.0%) |
|
9.87 (2.09) |
|
|
|
- |
|
Not estimated |
|
0.61 |
|
0.61 |
|
0.65 |
|
0.61; 0.70 |
9a. PA facilities in free-time |
|
2.41 (0.83) |
|
0.59 |
|
- |
|
0.57 |
|
|
|
0.58 |
|
0.49; 0.66 |
9b. Enjoyable PA facilities |
|
2.56 (0.78) |
|
0.70 |
|
- |
|
0.58 |
|
|
|
0.63 |
|
0.55; 0.71 |
9c. Appearance of PA facilities |
|
2.13 (0.78) |
|
0.46 |
|
- |
|
0.60 |
|
|
|
0.66 |
|
0.57; 0.71 |