OBJECTIVE: To determine the effect of various doses of vitamin D(2) and D(3), as well as ambulatory status (a surrogate for sun exposure), on 25-OH-D levels. DESIGN: Cross-sectional study with multiple regression analysis. SETTING: A state veterans home for veterans and their spouses. PARTICIPANTS: Three hundred two of 609 eligible residents. MEASUREMENTS: Serum 25-OH-D and parathyroid hormone (PTH) level, supplemental dose of vitamins D(2) and D(3) per kilogram of body weight, and 3 levels of ambulatory status. RESULTS: The mean 25-OH-D level was 28.6 + 9.2 ng/mL; 6.6% of subjects had values of 16 ng/mL or below. Thirty-two percent of participants had 25-OH-D levels below 30 ng/mL and PTH elevation based on stage of kidney disease, evidence that the suboptimal 25-OH-D level had physiologic consequences. Residents unable to transfer independently had 25-OH-D levels 1.6 ng/mL lower than those able to transfer independently. A regression analysis performed in residents unable to transfer independently (less likely to be exposed to the sun) demonstrated that the average increase in 25-OH-D level per 100 IU of D(3) in a 70-kg resident was 2.1 ng/mL versus 1.8 ng/mL for vitamin D(2). CONCLUSION: Nursing home residents should receive at least 800-1000 IU of D(3) per day in an effort to maintain optimal vitamin D levels.
OBJECTIVE: To determine the effect of various doses of vitamin D(2) and D(3), as well as ambulatory status (a surrogate for sun exposure), on 25-OH-D levels. DESIGN: Cross-sectional study with multiple regression analysis. SETTING: A state veterans home for veterans and their spouses. PARTICIPANTS: Three hundred two of 609 eligible residents. MEASUREMENTS: Serum 25-OH-D and parathyroid hormone (PTH) level, supplemental dose of vitamins D(2) and D(3) per kilogram of body weight, and 3 levels of ambulatory status. RESULTS: The mean 25-OH-D level was 28.6 + 9.2 ng/mL; 6.6% of subjects had values of 16 ng/mL or below. Thirty-two percent of participants had 25-OH-D levels below 30 ng/mL and PTH elevation based on stage of kidney disease, evidence that the suboptimal 25-OH-D level had physiologic consequences. Residents unable to transfer independently had 25-OH-D levels 1.6 ng/mL lower than those able to transfer independently. A regression analysis performed in residents unable to transfer independently (less likely to be exposed to the sun) demonstrated that the average increase in 25-OH-D level per 100 IU of D(3) in a 70-kg resident was 2.1 ng/mL versus 1.8 ng/mL for vitamin D(2). CONCLUSION: Nursing home residents should receive at least 800-1000 IU of D(3) per day in an effort to maintain optimal vitamin D levels.
Authors: Y Rolland; P de Souto Barreto; G Abellan Van Kan; C Annweiler; O Beauchet; H Bischoff-Ferrari; G Berrut; H Blain; M Bonnefoy; M Cesari; G Duque; M Ferry; O Guerin; O Hanon; B Lesourd; J Morley; A Raynaud-Simon; G Ruault; J-C Souberbielle; B Vellas Journal: J Nutr Health Aging Date: 2013-04 Impact factor: 4.075
Authors: Y Rolland; S Czerwinski; G Abellan Van Kan; J E Morley; M Cesari; G Onder; J Woo; R Baumgartner; F Pillard; Y Boirie; W M C Chumlea; B Vellas Journal: J Nutr Health Aging Date: 2008 Aug-Sep Impact factor: 4.075
Authors: R Diekmann; K Winning; J M Bauer; W Uter; P Stehle; S Lesser; T Bertsch; C C Sieber; D Volkert Journal: Z Gerontol Geriatr Date: 2013-07 Impact factor: 1.281
Authors: Carla Mc Williams; Kourosh Golestany; Rohit Sharma; Golali Nejati; Anna Cyrus-Murden; Dmitri Kripichnikov Journal: J Community Hosp Intern Med Perspect Date: 2011-10-17