Skip to main content

Table 2 Categories of 25(OH)D concentrations (nmol/L) and the median (md) values of grip strength (0–600 Newtons) with inter-quartile ranges (IQR) and the number (%) of women by country of birth who were unable to perform the upper leg muscle tests unaided

From: Physical performance and 25-hydroxyvitamin D: a cross-sectional study of pregnant Swedish and Somali immigrant women and new mothers

25(OH)D categories < 10 10–24 25–49 50–74 ≥ 75  
 Swedish, n   8 31 28 4  
 Somali, n 18 29 4 1   
       Rhoa p
Grip strength, md (IQR) 173 (143–219) 223 (189–258) 311 (267–354) 326 (294–370) 313 (303–415) 0.68 <.001
  Swedish   264* (202–327) 318* (293–344) 327 (305–349) 313 (303–415) 0.21 .078
  Somali 173 (143–219) 211 (187–244) 223 (106–285) 292   0.35 .012
Inability to: n (%)       pb
Squat       
  Swedish   0 0 0 0  
  Somali 15 (83.3) 18 (64.3) 4 (100) 1   .33
Sit to Stand       
  Swedish   0 0 0 0  
  Somali 1 (5.6) 1 (3.6) 0 0   
Trendelenburg       
  Swedish 0 1 0 0 0 .65
  Somali 5 (27.8) 5 (17.2) 1 (25.0) 0   .46
Stand on one leg       
  Swedish    2 (6.5) 1 (3.6) 1 (25.0) .57
  Somali 5 (27.8) 8 (27.6) 1 (25.5) 1 (100) .72
  1. aSpearman rho with p-values below.
  2. *p < 0.05 Mann–Whitney U test compared with the group below.
  3. bTests of distribution across 25(OH)D categories by Kruskal-Wallis test.
  4. Significant p-values are in bold.