The Relation between Aerobic Fitness, Muscular Fitness, and Obesity in Children from Three Countries at Different Stages of the Physical Activity Transition
Table 4
Age-adjusted relationship between body composition and muscular fitness (grip strength) measures by sex and country.
Boys
Girls
Canada
Mexico
Kenya
Differences*
Canada
Mexico
Kenya
Differences*
BMI
None
M > K, C > K
β (95% CI)
0.10 (0.00, 0.21)
0.14 (0.06, 0.23)
0.04 (−0.00, 0.08)
0.16 (0.07, 0.24)
0.27 (0.18, 0.37)
0.00 (−0.06, 0.06)
0.10
0.09
0.05
0.15
0.32
−0.02
Predicted BMI at grip strength of 27 kg
18.5
18.5
15.9
17.8
17.6
16.8
Predicted BMI at grip strength of 41 kg
19.9
20.4
16.4
20.1
21.5
16.8
Triceps skinfold
None
M > K
β (95% CI)
−0.02 (−0.11, 0.07)
0.13 (−0.02, 0.28)
0.01 (−0.06, 0.08)
0.06 (−0.07, 0.18)
0.27 (0.14, 0.40)
−0.07 (−0.18, 0.04)
0.00
0.02
−0.02
0.01
0.18
0.01
Waist circumference
None
M > K, C > K
β (95% CI)
0.31 (0.09, 0.53)
0.39 (0.15, 0.63)
0.10 (0.00, 0.19)
0.41 (0.18, 0.63)
0.71 (0.45, 0.96)
0.00 (−0.14, 0.15)
0.14
0.09
0.06
0.16
0.32
−0.01
Country differences identified by nonoverlapping confidence intervals; C: Canada, M: Mexico, and K: Kenya.
