Curvilinear association between waist-to-height ratio and cardiorespiratory fitness: a cross-sectional study based on nationwide data from Chinese children and adolescents

Dong, Jiehao; Song, Pengwei; Zhang, Zhen; Zhang, Jia

doi:10.1186/s13102-024-00868-8

BMC Sports Science, Medicine and Rehabilitation

Table 3 CRF values of Chinese children and adolescents by sex, age group and WHtR quintile

From: Curvilinear association between waist-to-height ratio and cardiorespiratory fitness: a cross-sectional study based on nationwide data from Chinese children and adolescents

Age (yrs)	WHtR<20th Percentile(A)		20th ≤ WHtR<40th Percentile(B)		40th ≤ WHtR<60th Percentile(C)		60th ≤ WHtR<80th Percentile(D)		WHtR ≥ 80th Percentile(E)		F-value	Cohen’s d^#
Age (yrs)	N	Mean(SD)	N	Mean(SD)	N	Mean(SD)	N	Mean(SD)	N	Mean(SD)	F-value	Cohen’s d^#
Boys												A/B	A/C	A/D	A/E	B/C	B/D	B/E	C/D	C/E	D/E
7–9 yrs	800	47.23 ± 2.81	633	47.68 ± 2.59	903	47.77 ± 2.47	1178	47.33 ± 2.29	1516	46.89 ± 2.24	22.88^※	0.17	0.20^a	0.04	0.13	0.04	0.14	0.33^a	0.18	0.37^a	0.19
10–12 yrs	775	44.72 ± 3.62	785	45.15 ± 3.62	797	45.21 ± 3.44	1065	44.83 ± 3.32	1492	43.46 ± 3.15	54.44^※	0.12	0.14	0.03	0.37^a	0.02	0.09	0.50^b	0.11	0.53^b	0.42^a
13–15 yrs	1045	43.67 ± 5.18	1037	44.33 ± 4.99	961	44.34 ± 5.25	860	44.00 ± 4.95	858	42.55 ± 4.76	19.33^※	0.13	0.13	0.07	0.23^a	0.00	0.07	0.37^a	0.07	0.36a	0.30^a
16–18 yrs	731	40.50 ± 5.72	908	41.56 ± 6.10	955	41.57 ± 6.19	1005	40.64 ± 6.16	821	39.27 ± 5.19	22.21^※	0.18	0.18	0.02	0.23^a	0.00	0.15	0.40^a	0.15	0.40^a	0.24^a
Girls
7–9 yrs	855	47.02 ± 2.62	794	47.36 ± 2.32	984	47.29 ± 2.31	1080	46.86 ± 2.18	948	46.74 ± 2.05	12.59^※	0.14	0.11	0.07	0.12	0.03	0.22	0.28^a	0.19	0.25^a	0.06
10–12 yrs	871	44.15 ± 3.27	922	44.00 ± 2.91	887	43.92 ± 2.97	895	43.61 ± 2.85	740	42.91 ± 2.82	21.81^※	0.05	0.07	0.18	0.41^a	0.03	0.14	0.38^a	0.11	0.35^a	0.25^a
13–15 yrs	1066	40.61 ± 3.98	1022	40.65 ± 3.89	964	40.37 ± 3.75	804	40.31 ± 4.15	506	39.84 ± 4.10	4.36	0.01	0.06	0.07	0.19	0.07	0.08	0.20^a	0.02	0.13	0.11
16–18 yrs	1000	35.64 ± 3.89	1147	35.72 ± 4.15	1055	35.48 ± 3.99	892	35.12 ± 3.74	524	34.35 ± 3.76	13.28^※	0.02	0.04	0.14	0.34^a	0.06	0.15	0.35^a	0.09	0.29^a	0.21^a
Total
7–9 yrs	1655	47.12 ± 2.71	1427	47.50 ± 2.45	1887	47.52 ± 2.40	2258	47.11 ± 2.25	2464	46.83 ± 2.17	30.06^※	0.15	0.16	0.00	0.12	0.01	0.17	0.29^a	0.18	0.30^a	0.13
10–12 yrs	1646	44.42 ± 3.45	1707	44.53 ± 3.30	1684	44.53 ± 3.26	1960	44.27 ± 3.17	2232	43.28 ± 3.05	55.82^※	0.03	0.03	0.05	0.35^a	0.00	0.08	0.39^a	0.08	0.40^a	0.32^a
13–15 yrs	2111	42.13 ± 4.86	2059	42.50 ± 4.84	1925	42.35 ± 4.98	1664	42.22 ± 4.94	1364	41.55 ± 4.71	8.69^※	0.08	0.04	0.02	0.12	0.03	0.06	0.20^a	0.03	0.17	0.14
16–18 yrs	1731	37.69 ± 5.32	2055	38.30 ± 5.87	2010	38.38 ± 5.99	1897	38.05 ± 5.86	1345	37.35 ± 5.26	9.27^※	0.11	0.12	0.06	0.06	0.01	0.04	0.17	0.06	0.18	0.13

Note: ^※P<0.001. ^a Small effect = 0.20, ^b Medium effect = 0.50, ^c Large effect = 0.80. ^# Effect size between different groups
Abbreviation: M (SD), mean ± standard deviation

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ISSN: 2052-1847

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