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Table 1 Age distribution, weight status and health-related physical fitness by sex

From: Health-related physical fitness and weight status in Hong Kong adolescents

  Boys
(N = 1626)
Girls
(N = 1578)
P*
Age (n and %)    
   12 or below 288 (17.7) 293 (18.6)  
   13 345 (21.2) 297 (18.8)  
   14 320 (19.7) 268 (17.0)  
   15 264 (16.2) 248 (15.7)  
   16 166 (10.2) 212 (13.4)  
   17 136 (8.4) 147 (9.3)  
   18 or above 107 (6.6) 113 (7.2)  
Weight status (n and %)    
   Grade II/III underweight 87 (5.4) 93 (5.9)  
   Grade I underweight 183 (11.3) 259 (16.4)  
   Normal weight 1064 (65.4) 1089 (69.0)  
   Overweight 250 (15.4) 123 (7.8)  
   Obese 42 (2.6) 14 (0.9)  
Physical fitness tests (mean and SD)    
   Push-up (count/min) 23.2 (14.6) 27.9 (16.3) N/A
   Sit-up (count/min) 38.8 (10.2) 31.6 (8.4) < 0.001
   Sit-and-reach (cm) 27.4 (8.7) 32.3 (8.0) < 0.001
   9-min run (m) 1632.1 (299.5) 1353.2 (211.1) < 0.001
  1. * P-value for sex difference based on t-test
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