Vitamin D Status Is Not Associated with Outcomes of Experimentally-Induced Muscle Weakness and Pain in Young, Healthy Volunteers

Table 1

Participant characteristics (values are means ± SD).

	All	Male	Female
𝑁	48	27	21
Age (y)	22.5 ± 3.2	22.5 ± 3.4	22.6 ± 3.2
BMI (kg/m^2)	25.8 ± 6.8	25.8 ± 4.9	25.9 ± 8.8
Nonhispanic white (%)	83.3%	85.2%	81.0%
Supplement usea	2	1	1
Serum 25(OH)D, (nmol/L)b	77.4 ± 36.1	78.15 ± 43.4	76.5 ± 24.7

aNumber of participants using supplements with plausible influence on outcomes, for example, omega-3 fatty acid.
bMeasures of 25-hydroxyvitamin D were obtained from serum drawn during Session 4, ~48-hour posteccentric exercise, representing a single measurement during the study. Serum 25(OH)D concentration ranges for all, males, and females were 19.7–269.3, 32.4–269.5, and 19.7–111.3 nmol/L, respectively.