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Table 5 Strength outcome measures

From: Effects of vitamin D3 supplementation on serum 25(OH)D concentration and strength in athletes: a systematic review and meta-analysis of randomized controlled trials

ReferenceVitamin D Daily DosageN = 1491-RM BP (kg)Quadriceps Contr. (N·m)
IUPrePostChangePrePostChange
aJung 2018 [30]500020   323.6 ± 7.3350.4 ± 7.525.8
015   329.9 ± 8.4339.2 ± 8.79.3
Fairbairn 2018 [31]357028126 ± 17122 ± 15−4   
029122 ± 17123 ± 161   
bClose 2013b [32]5000582 ± 1488.5 ± 146.5   
0582 ± 1484.5 ± 142.5   
Close 2013a [28]5714691 ± 2290 ± 20−1   
28571090 ± 1392 ± 152   
0979 ± 1779 ± 180   
cWyon 2016 [29]18,75011   232 ± 37.4265 ± 45.633
011   239 ± 65.9239 ± 63.70
  1. aDid 3 maximal quadriceps contraction at 60°/s; bBaseline measured from an average from 10 participants; cDid 3 maximal quadriceps contraction at 30°/s