TY - JOUR
T1 - Effect of adiposity on vitamin D status and the 25-hydroxycholecalciferol response to supplementation in healthy young and older Irish adults
AU - Forsythe, Kirsty
AU - Livingstone, M. Barbara E.
AU - Mulhern, Maria
AU - Horigan, Geraldine
AU - McSorley, E. M.
AU - Bonham, Maxine P.
AU - Magee, Pamela
AU - Hill, Tom R.
AU - Lucey, Alice J.
AU - Cashman, Kevin D.
AU - Kiely, Mairead
AU - Strain, JJ
AU - Wallace, Julie M. W.
PY - 2012/1
Y1 - 2012/1
N2 - There is increasing epidemiological evidence linking sub-optimal vitamin D status with overweight and obesity. Although increasing BMI and adiposity have also been negatively associated with the change in vitamin D status following supplementation, results have been equivocal. The aim of this randomised, placebo-controlled study was to investigate the associations between anthropometric measures of adiposity and the wintertime serum 25-hydroxycholecalciferol (25(OH)D) response to 15 mcg cholecalciferol per d in healthy young and older Irish adults. A total of 110 young adults (20–40 years) and 102 older adults (>=64 years) completed the 22-week intervention with >85% compliance. The change in 25(OH)D from baseline was calculated. Anthropometric measures of adiposity taken at baseline included height, weight and waist circumference (WC), along with skinfold thickness measurements to estimate fat mass (FM). FM was subsequently expressed as FM (kg), FM (%), FM index (FMI (FM kg/height m2)) and as a percentage ratio to fat-free mass (FFM). In older adults, vitamin D status was inversely associated with BMI (kg/m2), WC (cm), FM (kg and %), FMI (kg/m2) and FM:FFM (%) at baseline (r -0·33, -0·36, -0·33, -0·30, -0·33 and -0·27, respectively, all P values
AB - There is increasing epidemiological evidence linking sub-optimal vitamin D status with overweight and obesity. Although increasing BMI and adiposity have also been negatively associated with the change in vitamin D status following supplementation, results have been equivocal. The aim of this randomised, placebo-controlled study was to investigate the associations between anthropometric measures of adiposity and the wintertime serum 25-hydroxycholecalciferol (25(OH)D) response to 15 mcg cholecalciferol per d in healthy young and older Irish adults. A total of 110 young adults (20–40 years) and 102 older adults (>=64 years) completed the 22-week intervention with >85% compliance. The change in 25(OH)D from baseline was calculated. Anthropometric measures of adiposity taken at baseline included height, weight and waist circumference (WC), along with skinfold thickness measurements to estimate fat mass (FM). FM was subsequently expressed as FM (kg), FM (%), FM index (FMI (FM kg/height m2)) and as a percentage ratio to fat-free mass (FFM). In older adults, vitamin D status was inversely associated with BMI (kg/m2), WC (cm), FM (kg and %), FMI (kg/m2) and FM:FFM (%) at baseline (r -0·33, -0·36, -0·33, -0·30, -0·33 and -0·27, respectively, all P values
KW - Vitamin D status: 25-Hydroxycholecalciferol: Adiposity: BMI: Healthy adults
U2 - 10.1017/S0007114511002662
DO - 10.1017/S0007114511002662
M3 - Article
SN - 1475-2662
VL - 107
SP - 126
EP - 134
JO - BRITISH JOURNAL OF NUTRITION
JF - BRITISH JOURNAL OF NUTRITION
IS - 1
ER -
