Daily Physical Activity and Physical Fitness in 11-to 15-year-old Trained and Untrained Turkish Boys

Table 4 Daily physical activity levels of trained and untrained boys from 11 to 15 years of age. Values are means (±SD).

		Age Groups (n = 147)					P value
		11 yr	12 yr	13 yr	14 yr	15 yr	Age Effect	Training Effect	Age x Training
T/U (n)		15 / 15	15 / 15	14 / 14	14 / 15	15 / 15	Age Effect	Training Effect	Age x Training
%HRR ^{a, b}	T	27.4 (1.9)	25.9 (3.3)	24.7 (2.0)	26.6 (2.3)	25.3 (2.5)	.021	<.001	.535
%HRR ^{a, b}	U	24.5 (3.8)	24.5 (2.4)	23.2 (3.6)	23.3 (3.3)	22.1 (3.2)	.021	<.001	.535
Volume of Accumulated Activity
MPA^b(min·day^-1)	T	64.9 (14.0)	58.4 (18.0)	55.6 (17.2)	54.8 (13.3)	55.6 (17.4)	.131	<.001	.747
MPA^b(min·day^-1)	U	39.8 (20.3)	43.7 (15.0)	35.9 (21.6)	33.3 (13.9)	30.6 (16.7)	.131	<.001	.747
VPA ^b(min·day^-1)	T	31.8 (13.5)	28.1 (13.5)	28.7 (14.7)	29.8 (14.3)	26.2 (11.5)	.365	<.001	.947
VPA ^b(min·day^-1)	U	16.1 (11.1)	12.4 (5.3)	11.6 (8.7)	9.9 (8.3)	10.0 (7.8)	.365	<.001	.947
Duration of Maximum Sustained Bouts
MPA ^b(min·day^-1)	T	5.5 (1.9)	4.8 (1.7)	4.7 (1.4)	4.8 (1.7)	5.0 (2.0)	.645	<.001	.636
MPA ^b(min·day^-1)	U	3.4 (1.2)	3.8 (1.3)	3.0 (1.3)	3.4 (1.2)	3.0 (1.5)	.645	<.001	.636
VPA ^b(min·day^-1)	T	5.5 (2.1)	5.7 (2.8)	5.6 (2.4)	6.0 (2.7)	5.8 (2.3)	.950	<.001	.935
VPA ^b(min·day^-1)	U	3.1 (2.0)	2.9 (1.6)	2.3 (1.4)	2.8 (1.6)	2.9 (1.8)	.950	<.001	.935
Daily Number of Sustained Bouts
MPA ^{a, b}1^st Duration	T	49.6 (11.9)	50.8 (17.9)	41.3 (14.5)	45.2 (14.2)	42.8 (12.8)	.010	<.001	.677
MPA ^{a, b}1^st Duration	U	42.1 (18.2)	43.7 (10.6)	35.1 (14.7)	28.9 (12.4)	31.4 (17.8)	.010	<.001	.677
MPA ^b2^nd Duration	T	10.8 (2.8)	9.6 (3.5)	9.1 (2.6)	8.9 (2.5)	8.2 (2.7)	.093	<.001	.688
MPA ^b2^nd Duration	U	6.6 (3.9)	7.6 (3.0)	5.5 (3.4)	6.1 (2.8)	5.5 (3.3)	.093	<.001	.688
MPA ^b3^rd Duration	T	6.0 (2.4)	5.0 (2.2)	5.7 (2.5)	5.2 (2.3)	5.8 (3.1)	.900	<.001	.623
MPA ^b3^rd Duration	U	3.0 (2.4)	3.3 (1.8)	3.1 (2.7)	2.9 (1.9)	2.2 (1.5)	.900	<.001	.623
VPA ^{a, b}1^st Duration	T	14.2 (5.9)	14.0 (7.3)	11.8 (6.4)	11.5 (4.2)	11.2 (3.9)	.008	<.001	.946
VPA ^{a, b}1^st Duration	U	10.0 (5.5)	9.0 (3.2)	6.5 (3.5)	5.2 (3.7)	5.5 (5.6)	.008	<.001	.946
VPA^b2^nd Duration	T	3.7 (1.4)	3.6 (2.0)	3.6 (2.4)	2.8 (1.7)	2.6 (1.5)	.073	<.001	.995
VPA^b2^nd Duration	U	2.4 (2.2)	2.2 (1.1)	2.1 (1.9)	1.4 (1.0)	1.5 (1.6)	.073	<.001	.995
VPA^b3^rd Duration	T	4.0 (2.2)	3.1 (1.5)	3.6 (1.9)	3.9 (1.6)	3.1 (1.5)	.469	<.001	.704
VPA^b3^rd Duration	U	1.4 (1.2)	1.2 (.8)	1.1 (1.6)	1.4 (1.3)	1.3 (1.1)	.469	<.001	.704

T = trained; U = untrained; %HRR = percentage of heart rate reserve; MPA = moderate physical activity; VPA = vigorous physical activity"a" denotes significant age effect"b" denotes significant training effect.