Table 2

Trend analysis of linear regressions of health and fitness measures over time for adolescents aged 13–14 years

	B coef	St β coef	95% CI	P value
Height (cm)*	0.65	0.11	0.40 to 0.89	<0.001
Weight (kg)*	0.56	0.07	0.21 to 0.91	0.002
BMI z-score (WHO)*	0.01	0.01	−0.03 to 0.04	0.78
Grip strength (kg)†	−0.60	−0.12	−0.78 to −0.41	<0.001
Broad jump (cm)†	−1.16	−0.06	−1.99 to −0.34	0.006
Total shuttles*	−1.85	−0.10	−2.58 to −1.12	<0.001
Ball catching (SDS)†	−0.12	−0.16	−0.15 to −0.08	<0.001

95% CI of the unstandardised beta coefficient.
*Adjusted for school and sex.
†Adjusted for school, sex and height.
B coef, unstandardised beta coefficient; BMI, body mass index; SDS, SD score; St β coef, standardised beta coefficient.