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Table 3 Moderator analysis

From: The effect of resistance training interventions on weight status in youth: a meta-analysis

Moderator Outcome Hedges’g (95% CI) No. of studies Between group comparison: Q (df)
Sex of participants Skinfolds (mm) Females = 0.815 (0.167 to 1.463)* 3 3.310 (2)
Males = 0.188 (− 0.105 to 0.482) 4
Mixed = 0.181 (− 0.100 to 0.462) 2
Sex of training group Body fat (%) Mixed = 0.277 (0.055 to 0.500)* 7 0.660 (2)
Males = 0.139 (0.− 0.108 to 0.387) 6
Females = 0.212 (− 0.254 to 0.678) 2
Skinfolds (mm) Mixed = 0.320 (0.094 to 0.545)** 8 1.214 (1)
Males = − 0.001 (− 0.519 to 0.517) 1
Weight status Body mass index (kg/m2) Obese = 0.540 (0.220 to 0.860)** 1 8.586 (3)*
Healthy = − 0.172 (− 0.668 to 0.324) 3
Mixed = 0.063 (−0.231 to 0.358) 4
Overweight/obese = −0.003 (− 0.313 to 0.307) 4
Body fat (%) Mixed = 0.301 (0.005 to 0.598) * 4 0.374(2)
Healthy = 0.189 (− 0.032 to 0.410) 7
Overweight/obese = 0.198 (− 0.203 to 0.598) 4
Skinfolds (mm) Healthy = 0.320 (0.094 to 0.545)** 8 1.241 (1)
Overweight/obese = − 0.001 (− 0.519 to 0.517) 1
Waist circumference (cm) Obese = 0.636 (0.314 to 0.958)*** 1 7.586(3)*
Healthy = 0.100 (− 0.684 to 0.884) 1
Mixed = 0.056 (− 0.267 to 0.379) 3
Overweight/obese = −0.015 (0.083 to 0.497) 1
Age Body fat (%) > 12 = 0.211 (0.016 to 0.407)* 8 0.004(1)
< 12 0.222 (− 0.036 to 0.480) 7
Skinfolds (mm) < 12 = 0.415 (0.116 to 0.714) ** 5 1.294 (1)
> 12 = 0.165 (− 0.146 to 0.476) 4
Pubertal stage Skinfolds (mm) < 2 = 0.415 (0.116 to 0.714) ** 5 0.392 (1)
> 2 0.199 (− 0.7407 to 0.805) 3
Waist circumference (cm) > 2 = 0.636 (0.314 to 0.958) *** 1 0.536(1)
< 2 = 0.100 (− 0.684 to 0.884) 1
Location Body mass index (kg/m2) School free time = 0.277 (0.069 to 0.485)* 5 2.152(2)
School PE = − 0.103 (− 0.825 to 0.618) 1
Community = 0.027 (− 0.227 to 0.280) 5
Body fat (%) School free time = 0.256 (0.030 to 0.483)* 6 0.337(2)
School PE = 0.259 (− 0.301 to 0.820) 2
Community = 0.164 (− 0.069 to 0.397) 7
Quality score Body fat (%) Moderate = 0.269 (0.001 to 0.537)* 5 0.282 (2)
Weak = 0.135 (− 0.363 to 0.632) 2
Strong = 0.197 (− 0.011 to 0.405) 8
Waist circumference (cm) Strong = 0.636 (0.314 to 0.958)** 1 7.528 (1)**
Moderate = 0.048 (− 0.221 to 0.317) 5
  1. *p < 0.05, **p < 0.01, ***p < 0.001