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Table 4 Relationship between doping attitudes [PEAS scores], weight change, weightlifting, and nutritional product use in the past two weeks

From: Relationships between body image, nutritional supplement use, and attitudes towards doping in sport among adolescent boys: implications for prevention programs

  Yes No ANCOVAa Effect size
  Mean [ SD] Mean [ SD]   ηp2
Current weight gain 42.95 [15.38] 37.67 [13.93] F(1,669) = 11.82** .02
Energy drinks 41.09 [16.03] 37.36 [13.19] F(1,672) = 9.81** .01
Vitamins and minerals 40.46 [15.21] 37.47 [13.54] F(1,672) = 6.87** .01
Current weight loss 40.81 [13.16] 37.69 [14.41] F(1,667) = 5.93* .009
Sports drinks 39.50 [13.86] 37.48 [14.41] F(1,672) = 3.42 .005
Protein powder 40.33 [15.51] 37.94 [13.75] F(1,672) = 3.19 .005
Weightlifting 41.09 [17.90] 38.17 [14.76] F(1,673) = 2.49 .004
  1. Note: *p < 0.05; **p < 0.01; aANCOVA controlled for age in these analyses.