Lower-limb muscle strength: normative data from an observational population-based study

Table 4 Constant values, regression coefficients and adjusted coefficients of determination (R²) for linear regression models for muscle strength (N) and muscle quality (N/kg) for hip flexors and hip abductors

	Constant	Age-c^a	(Age-c^a)²	Body mass	Height (m)	Adjusted R² (%)
Muscle strength
Males
Hip flexors	3.4	−2.52	−0.0241	0.666	136	28.9
Hip abductors	125	−1.25	−0.0252	0.754		16.3
Females
Hip flexors	129	−1.56		0.512		26.6
Hip abductors	24.6	−1.05	−0.0266	0.482	53.2	23.2
Muscle quality
Males
Hip flexors	59.3	−0.211		−0.0598	−12.8	16.2
Hip abductors	44.2	−0.0903	−0.00272		−13.5	7.4
Females
Hip flexors	66.1	−0.227			−24.6	16.4
Hip abductors	44.2	−0.150	−0.00502		−13.0	14.3

Data represent associations with age (yr) centred about the mean (55.7 yr), body mass (kg) and height (m)
All regression coefficients are significant at p < 0.001

ISSN: 1471-2474