Table 3 Regression analysis between variables.

From: Physical activity and internalization problems in middle school students: the chain mediating role of rumination thinking and peer acceptance

Result variable

Predictor

Fitting index

Coeffcient signifcance

Confidence Interval

R

R2

F

β

t

p

Rumination

Gender

0.204

0.042

8.83

0.145

1.876

0.061

− 0.007, 0 0.296

Age

0.048

0.941

0.347

− 0.052, 0 0.147

Physical exercis

− 0.174

− 4.262

0.000***

− 0.255, − 0.094

Peer Acceptance

Gender

0.415

0.172

40.24

− 0.092

− 1.229

0.219

− 0.240, 0 0.055

Age

− 0.039

− 0.869

0.385

− 0.126, 0 0.049

Physical exercis

0.357

9.839

0.000***

0.286, 0 0.429

Rumination

− 0.128

− 3.517

0.000***

− 0.199, − 0.056

Internalizing Problems

Gender

0.576

0.331

46.74

0.238

3.646

0.000***

0.110, 0 0.366

Age

0.046

1.134

0.257

− 0.034, 0.126

Physical exercis

− 0.060

− 1.511

0.131

− 0.137, 0 0.018

Rumination

0.289

8.492

0.000***

0.222, 0 0.356

Peer acceptance

− 0.372

− 9.629

0.000***

− 0.448, − 0.296

  1. * p < 0.05, ** p < 0.01, *** p < 0.001.