. 2025 Sep 1;18(8):811–835. doi: 10.70252/WUPH8495

Supplementary Table 2.

Summary of Bivariate Regression Models by Variable and Sex

Variable	Sex	N of Observations	Equation	r	Adj. R²	SEE	P-value
Body Fat Percentage (%)	Male	216	y = 17.45 + 0.08 * x	0.062	0.001	6.218	0.368
Body Fat Percentage (%)	Female	85	y = 23.65 + 0.24 * x	0.202	0.029	7.359	0.064

Body Mass Index (kg·m⁻²)	Male	219	y = 24.24 + 0.09 * x	0.103	0.006	4.237	0.127
Body Mass Index (kg·m⁻²)	Female	86	y = 22.36 + 0.13 * x	0.139	0.008	5.511	0.201

Fat Mass Index (kg·m⁻²)	Male	216	y = 4.5 + 0.04 * x	0.068	0.001	2.42	0.322
Fat Mass Index (kg·m⁻²)	Female	85	y = 4.6 + 0.12 * x	0.189	0.024	3.966	0.084

Fat-Free Mass Index (kg·m⁻²)	Male	216	y = 20.81 + 0.02 * x	0.051	0.002	2.091	0.454
Fat-Free Mass Index (kg·m⁻²)	Female	85	y = 17.79 + 0 * x	0.006	0.012	1.932	0.958

Functional Reach Test (cm)	Male	219	y = 44.15 − 0.13 * x	−0.104	0.006	5.867	0.124
Functional Reach Test (cm)	Female	86	y = 41.66 − 0.1 * x	−0.104	0.001	5.759	0.339

Sit-and-Reach Test (cm)	Male	219	y = 35.52 − 0.3 x	−0.150	0.018	9.558	0.026
Sit-and-Reach Test (cm)	Female	86	y = 32.5 − 0.02 * x	−0.011	0.012	8.953	0.92

Cognitive Reaction Time (s)	Male	219	y = 31.33 + 0.03 * x	0.063	0.001	2.277	0.350
Cognitive Reaction Time (s)	Female	86	y = 26.95 + 0.18 * x	0.395	0.146	2.573	< 0.001

Countermovement Jump (cm)	Male	216	y = 58.63 − 0.46 * x	−0.340	0.111	6.114	<0.001
Countermovement Jump (cm)	Female	83	y = 52.03 − 0.58 * x	−0.559	0.304	5.394	< 0.001

Grip Strength (kg)	Male	219	y = 129.88 − 0.79 * x	−0.223	0.045	16.385	0.001
Grip Strength (kg)	Female	86	y = 84.16 − 0.56 * x	−0.259	0.056	12.876	0.016

Isometric Midthigh Pull (kg)	Male	188	y = 293.66 − 1.91 * x	−0.466	0.213	6.63	0.001
Isometric Midthigh Pull (kg)	Female	68	y = 209.83 − 1.99 * x	−0.335	0.099	36.03	0.005

Plank (s)	Male	216	y = 99.32 + 1.44 * x	0.103	0.006	61.009	0.130
Plank (s)	Female	83	y = 193.52 − 1.98 * x	−0.213	0.034	56.399	0.053

Est. VO_2max (ml·kg⁻¹·min⁻¹)	Male	219	y = 49.35 − 0.16 * x	−0.156	0.020	4.784	0.021
Est. VO_2max (ml·kg⁻¹·min⁻¹)	Female	86	y = 51.34 − 0.32 * x	−0.533	0.275	3.189	< 0.001

Notes: N = number of observations; SD = standard deviation; kg·m⁻² = kilograms per square meter; cm = centimeters; s = seconds; kg = kilograms; ml·kg⁻¹·min⁻¹ = milliliters per kilogram per minute; r = correlation coefficient; Adj. R² = Adjusted R²; SEE = standard error of the estimate.