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Table 4 Physical activity by body image perception among normal weight high school students

From: The association of body image distortion with weight control behaviors, diet behaviors, physical activity, sadness, and suicidal ideation among Korean high school students: a cross-sectional study

  Under-estimation Correct estimation Over-estimation Total P-value
(n = 5,990) (n = 9,387) (n = 4,887) (n = 20,264)
Doing physical activity for ≥ 60 min during the past 7 days   
 None 30.5 ± 0.7 37.1 ± 0.7 45.1 ± 0.8 37.0 ± 0.6 <0.001
 1–2 days 35.8 ± 0.7 35.3 ± 0.5 34.6 ± 0.7 35.3 ± 0.4  
 3–4 days 20.1 ± 0.6 15.8 ± 0.4 12.9 ± 0.5 16.4 ± 0.4  
 5–6 days 8.2 ± 0.4 6.9 ± 0.3 5.0 ± 0.3 6.8 ± 0.2  
 Daily 5.4 ± 0.3 4.9 ± 0.3 2.5 ± 0.2 4.5 ± 0.2  
Doing vigorous exercise during the past 7 days    
 None 21.4 ± 0.7 28.5 ± 0.7 36.1 ± 0.8 28.2 ± 0.6 <0.001
 1–2 days 42.4 ± 0.7 41.2 ± 0.5 42.7 ± 0.8 41.9 ± 0.4  
 3–4 days 22.4 ± 0.6 17.7 ± 0.5 13.6 ± 0.6 18.2 ± 0.4  
 ≥5 days 13.8 ± 0.5 12.5 ± 0.5 7.6 ± 0.4 11.7 ± 0.4  
Doing muscle strengthening exercise during the past 7 days   
 None 39.8 ± 0.8 51.0 ± 0.9 65.4 ± 0.8 51.0 ± 0.8 <0.001
 1–2 days 28.6 ± 0.6 26.4 ± 0.6 21.8 ± 0.7 26.0 ± 0.5  
 3–4 days 16.3 ± 0.5 11.4 ± 0.4 7.6 ± 0.4 12.0 ± 0.3  
 ≥5 days 15.2 ± 0.5 11.3 ± 0.4 5.1 ± 0.3 11.0 ± 0.4  
Walking for ≥ 10 min during the past 7 days    
 None 5.8 ± 0.3 5.6 ± 0.3 6.2 ± 0.3 5.8 ± 0.2 <0.001
 1–2 days 10.2 ± 0.4 11.7 ± 0.4 12.4 ± 0.5 11.4 ± 0.3  
 3–4 days 10.8 ± 0.5 12.8 ± 0.4 13.5 ± 0.5 12.4 ± 0.3  
 5–6 days 18.8 ± 0.5 20.8 ± 0.5 21.8 ± 0.6 20.4 ± 0.3  
 Daily 54.4 ± 0.8 49.2 ± 0.7 46.0 ± 0.7 50.0 ± 0.5  
  1. Weighted % ± SE