Pedometer-determined physical activity among youth in the Tokyo Metropolitan area: a cross-sectional study

Fukushima, Noritoshi; Inoue, Shigeru; Hikihara, Yuki; Kikuchi, Hiroyuki; Sato, Hiroki; Tudor-Locke, Catrine; Tanaka, Shigeho

doi:10.1186/s12889-016-3775-5

BMC Public Health

Table 1 Distribution of participants by valid days of pedometer wear, grade, and sex in Tokyo in 2011

From: Pedometer-determined physical activity among youth in the Tokyo Metropolitan area: a cross-sectional study

					Number of students per valid days of pedometer wear
			Total		1 day		2 days		3 days		4 days		5 days		6 days		7 days
	Grade	Age	n	Pct	n	Pct	n	Pct	n	Pct	n	Pct	n	Pct	n	Pct	n	Pct
Boys
Primary school	All grades		7786	100	245	3.1	344	4.4	490	6.3	830	10.7	1220	15.7	1572	20.2	3085	39.6
	1	6–7	802	100	22	2.7	38	4.7	48	6.0	74	9.2	117	14.6	182	22.7	321	40.0
	2	7–8	772	100	30	3.9	37	4.8	55	7.1	76	9.8	115	14.9	179	23.2	280	36.3
	3	8–9	768	100	33	4.3	46	6.0	52	6.8	92	12.0	106	13.8	168	21.9	271	35.3
	4	9–10	828	100	33	4.0	33	4.0	47	5.7	84	10.1	132	15.9	173	20.9	326	39.4
	5	10–11	795	100	22	2.8	35	4.4	41	5.2	77	9.7	136	17.1	155	19.5	329	41.4
	6	11–12	853	100	27	3.2	29	3.4	45	5.3	77	9.0	123	14.4	181	21.2	371	43.5
Junior high school	1	12–13	877	100	34	3.9	40	4.6	70	8.0	119	13.6	151	17.2	174	19.8	289	33.0
	2	13–14	783	100	16	2.0	33	4.2	59	7.5	106	13.5	131	16.7	146	18.6	292	37.3
	3	14–15	816	100	23	2.8	38	4.7	52	6.4	79	9.7	128	15.7	138	16.9	358	43.9
High school	1	15–16	177	100	3	1.7	9	5.1	13	7.3	15	8.5	34	19.2	16	9.0	87	49.2
	2	16–17	161	100	0	0.0	4	2.5	3	1.9	21	13.0	21	13.0	30	18.5	82	50.9
	3	17–18	154	100	2	1.3	2	1.3	5	3.2	10	6.5	26	16.9	30	19.5	79	51.3
Girls
Primary school	All grades		7685	100	124	1.6	232	3.0	357	4.6	627	8.2	949	12.3	1575	20.5	3821	49.7
	1	6–7	762	100	18	2.4	26	3.4	47	6.2	78	10.2	88	11.5	160	21.0	345	45.3
	2	7–8	776	100	12	1.5	31	4.0	37	4.8	83	10.7	92	11.9	144	18.6	377	48.6
	3	8–9	797	100	18	2.3	33	4.1	36	4.5	60	7.5	88	11.0	181	22.7	381	47.8
	4	9–10	787	100	12	1.5	22	2.8	39	5.0	68	8.6	97	12.3	162	20.6	387	49.2
	5	10–11	796	100	11	1.4	20	2.5	22	2.8	47	5.9	76	9.5	166	20.9	454	57.0
	6	11–12	803	100	10	1.2	14	1.7	34	4.2	50	6.2	91	11.3	146	18.2	458	57.0
Junior high school	1	12–13	838	100	12	1.4	24	2.9	53	6.3	73	8.7	134	16.0	184	22.0	358	42.7
	2	13–14	746	100	11	1.5	16	2.1	36	4.8	70	9.4	81	10.9	158	21.2	374	50.1
	3	14–15	816	100	13	1.6	31	3.8	33	4.0	58	7.1	108	13.2	166	20.3	407	49.9
High school	1	15–16	197	100	5	2.5	7	3.6	8	4.1	20	10.2	33	16.8	39	19.8	85	43.1
	2	16–17	213	100	1	0.5	6	2.8	5	2.3	14	6.6	38	17.8	42	19.7	107	50.2
	3	17–18	154	100	1	0.6	2	1.3	7	4.5	6	3.9	23	14.9	27	17.5	88	57.1

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