Journal of Obesity / 2011 / Article / Tab 2

Research Article

A 10-Month Physical Activity Intervention Improves Body Composition in Young Black Boys

Table 2

Body Composition, CV Fitness and PA measures by Group ( ).

BaselineFollow-up
ATTNATTCONATTNATTCON
(n = 31)(n = 31)(n = 44)(n = 31)(n = 31)(n = 44)

BMI (kg/ )20.4 (5.4)20.3 (4.9)20.0 20.3 (5.5)20.7 (5.2)20.5
Waist circ. (cm)66.4 (11.6)66.1 (10.8)65.7 (9.9)66.9 (12.1)67.5 (12.2)67.1 (10.3)
FM (kg)11.6 (9.3)12.1 (8.8)10.5 11.3 (9.9)12.6 (9.5)11.4
FFM (kg)30.8 29.2 29.1 34.1 32.7 32.6
%BF24.4 26.4 24.5 (9.7)22.1 25.0 23.9 (10.4)
BMC (kg)1.28 1.22 1.20 1.45 1.40 1.36
BMD (g/c )0.89 0.89 0.89 0.94 0.94 0.92
V -170 (ml/kg/min)25.5 (8.0)22.6 (5.6)23.4 26.8 (5.9)24.3 (5.4)25.9
V -170 (L/min)1.02 0.90 0.91 1.18 1.06 1.10

(n = 27)(n = 22)(n = 36)(n = 28)(n = 23)(n = 36)

MVPA (hrs/day)0.91 0.83 (0.13)0.83 (0.10)1.49 0.98 (0.13)0.91 (0.12)

PA = physical activity; SE = standard error; ATT = boys in the intervention group who attended ; NATT = intervention boys who attended ; CON = control; BMI = body mass index; circ. = circumference; FM = fat mass; FFM = fat free mass; %BF = percent body fat; BMC = bone mineral content; BMD = bone mineral density; V -170 = the V at a heart rate of 170 bpm during the graded treadmill test; MVPA = moderate-to-vigorous PA. Significant difference between baseline and follow-up for ATT, NATT, and CON groups.

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