Musculoskeletal pain and its association with health status, maturity, and sports performance in adolescent sport school students: a 2-year follow-up

Table 1 Descriptive data for boys and girls at baseline (n = 131)

	Baseline
	Boys (n = 79)		Girls (n = 52)
	n	Mean ± SD or %	n	Mean ± SD or %
Pain group^a
Infrequent pain group	38	48%	22	42%
Frequent pain group	41	52%	30	58%
Number of regions with frequent pain
1 region	9	11%	6	12%
≥ 2 regions^b	32	41%	24	46%
Pain intensity, NRS 0–10^c	76	3.3 ± 2.5	49	2.9 ± 2.0
EQ-5D (0.00–1.00)^d	77	0.86 ± 0.14	50	0.84 ± 0.14
1.00	30	39%	16	32%
< 1.00	47	61%	34	68%
Height (cm)	79	166.2 ± 9.5	51	163.9 ± 5.6
Body weight (kg)	79	53.4 ± 9.8	52	54.6 ± 6.6
Chronological age (years)	79	13.96 ± 0.26	52	13.99 ± 0.25
Maturity offset (years)	79	–0.28 ± 0.76	51	1.73 ± 0.42
Pre PHV (< − 1.0 year)	14	18%	0	0%
Average PHV (± 1.0 year)	60	76%	1	2%
Post PHV (> 1.0 year)	5	6%	50	98%
20-m sprint (s)	70	3.34 ± 0.20	48	3.40 ± 0.16
Agility T-test (s)	68	10.62 ± 0.60	48	10.98 ± 0.56
CMJ-AS (cm)	69	34.9 ± 5.9	47	33.0 ± 4.8
Grip strength (kg)	78	30.3 ± 7.3	52	28.2 ± 4.2
Sports category^e
Contact sports	66	84%	30	58%
Non-contact sports	13	16%	22	42%

The results are presented as mean ± SD or as n and %. Pain group and sports category were analyzed with chi² tests
NRS, numeric rating scale; PHV, peak height velocity; CMJ-AS, counter-movement jump with arm swing
^aAnalyzed with chi² test. Boys vs. girls, p = 0.515
^bRange for boys were 2–8 regions and for girls 2–7 regions
^cScored from best to worst
^dScored from worst to best. EQ-5D was dichotomized according to the best tertiary (1.00) vs. the two worst tertiaries (< 1.00)
^eAnalyzed with chi² test. Boys vs. girls, p = 0.001

ISSN: 2052-1847