Indices of Abdominal Adiposity and Cardiorespiratory Fitness Test Performance in Middle-School Students

Table 1

Anthropometric measures and cardiorespiratory fitness scores per grade and gender group (means ± S.D.).

	Grade 6	Grade 7	Grade 8	Girls	Boys
	(𝑛=34)	(𝑛=52)	(𝑛=48)	(𝑛=69)	(𝑛=65)
Anthropometric measures
Height (m)	1.52±.066	𝟏.𝟔𝟑±.𝟏𝟎𝟒^+	𝟏.𝟔𝟗±.𝟎𝟖𝟓^+	1.59 ± .08	𝟏.𝟔𝟒±.𝟏𝟐 *
Weight (kg)	40.6±7.26	49.7±10.0	𝟔𝟎.𝟗±𝟏𝟐.𝟖^+	47.78 ± 9.92	𝟓𝟐.𝟔𝟗±𝟏𝟑.𝟔𝟎 *
BMI (kg/m^2)^1	17.4±2.95	18.4±2.59	𝟐𝟏.𝟎±𝟑.𝟎𝟕^+	18.69 ± 2.87	19.18 ± 3.21
% Body fat (SKF)^2	20.7±6.95	20.3±6.64	21.3±9.05	23.35 ± 5.99	𝟏𝟗.𝟑𝟎±𝟕.𝟖𝟓 *
% Body fat (BIA)^3	21.7±6.52	19.2±5.89	19.2±19.2	22.08 ± 5.09	𝟏𝟖.𝟑𝟖±𝟔.𝟖𝟒 *
WC (cm)^4	63.5±6.13	66.8±7.77	𝟕𝟐.𝟖±𝟖.𝟐𝟕^+	65.89 ± 7.91	68.46 ± 8.10
WHtR^5	.416±.042	.409±.045	.429±.039	.413 ± .045	.415 ± .041
Cardiorespiratory fitness scores
One mile time (s)	561.0±145.7	522.1±142.8	𝟒𝟐𝟔.𝟕±𝟗𝟏.𝟑𝟒^+	557.2 ± 139.0	𝟒𝟓𝟎.𝟒±𝟏𝟎𝟎.𝟔 *
PACER (laps)	50.0±19.3	49.2±21.4	65.5 ± 26.1	44.79 ± 18.60	𝟔𝟎.𝟒±𝟐𝟑.𝟎𝟒 *

¹BMI stands for Body Mass Index.
²SKF stands for % body fat estimation from the two-site skinfold method and Slaughter formula.
³BIA stands for % body fat estimation from the Omron BIA device.
⁴WC stands for waist circumference.
⁵WHtR stands for waist-to-height ratio.
⁺Grade effect, 𝑃<.05.
*Gender effect, 𝑃<.05.