scholarly journals 25-Hydroxyvitamin D Threshold for the Effects of Vitamin D Supplements on Bone Density: Secondary Analysis of a Randomized Controlled Trial

2018 ◽  
Vol 33 (8) ◽  
pp. 1464-1469 ◽  
Author(s):  
Helen M Macdonald ◽  
Ian R Reid ◽  
Gregory D Gamble ◽  
William D Fraser ◽  
Jonathan C Tang ◽  
...  
Keyword(s):  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Bone Density ◽  
Controlled Trial ◽  
Secondary Analysis ◽  
Hydroxyvitamin D ◽  
Randomized Controlled ◽  
25 Hydroxyvitamin D ◽  
Vitamin D Supplements

scholarly journals Effects of Vitamin D Supplementation on Serum 25-Hydroxyvitamin D Concentrations in Cirrhotic Patients: A Randomized Controlled Trial

Nutrients ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 278 ◽  
Author(s):  
Stefan Pilz ◽  
Csilla Putz-Bankuti ◽  
Martin Gaksch ◽  
Walter Spindelboeck ◽  
Marius Haselberger ◽  
...  
Keyword(s):  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Vitamin D Supplementation ◽  
Hydroxyvitamin D ◽  
Randomized Controlled ◽  
25 Hydroxyvitamin D ◽  
Cirrhotic Patients

scholarly journals Vitamin D supplements for trunk muscle morphology in older adults: secondary analysis of a randomized controlled trial

2018 ◽  
Vol 10 (1) ◽  
pp. 177-187 ◽  
Author(s):  
William A. Cuellar ◽  
Leigh Blizzard ◽  
Julie A. Hides ◽  
Michele L. Callisaya ◽  
Graeme Jones ◽  
...  
Keyword(s):  
Older Adults ◽  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Secondary Analysis ◽  
Trunk Muscle ◽  
Muscle Morphology ◽  
Randomized Controlled ◽  
Vitamin D Supplements

scholarly journals Vitamin D–enhanced eggs are protective of wintertime serum 25-hydroxyvitamin D in a randomized controlled trial of adults

2016 ◽  
Vol 104 (3) ◽  
pp. 629-637 ◽  
Author(s):  
Aoife Hayes ◽  
Sarah Duffy ◽  
Michael O’Grady ◽  
Jette Jakobsen ◽  
Karen Galvin ◽  
...  
Keyword(s):  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Hydroxyvitamin D ◽  
Randomized Controlled ◽  
25 Hydroxyvitamin D

scholarly journals Three Doses of Vitamin D and Cognitive Outcomes in Older Women: A Double-Blind Randomized Controlled Trial

2019 ◽  
Vol 75 (5) ◽  
pp. 835-842 ◽  
Author(s):  
Monica Castle ◽  
Nancy Fiedler ◽  
Lilliana Claudia Pop ◽  
Stephen J Schneider ◽  
Yvette Schlussel ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Reaction Time ◽  
Controlled Trial ◽  
Cognitive Measures ◽  
Hydroxyvitamin D ◽  
Domain Specific ◽  
Randomized Controlled ◽  
25 Hydroxyvitamin D

Abstract Vitamin D may affect cognitive performance, but previous studies are either short term or observational. We conducted a randomized controlled trial of vitamin D supplementation on domain-specific cognitive measures in postmenopausal women. Overweight/obese women with serum 25-hydroxyvitamin D (25OHD) levels less than 30 ng/mL were recruited. Vitamin D3 supplementation (600, 2,000, or 4,000 IU/d) was randomly assigned in a double-blinded manner for 1 year. Serum 25-hydroxyvitamin D, osteocalcin (total and undercarboxylated), amyloid beta, parathyroid hormone, and estradiol were analyzed before and after supplementation. Cognitive tests were administered after treatment. The women (58 ± 6 years; body mass index, 30.0 ± 3.5 kg/m2) had a baseline serum 25-hydroxyvitamin D level of 22.6 ± 5.8 ng/mL that increased to 30.2 ± 5.6, 36.0 ± 4.9, and 40.8 ± 7.0 ng/mL in the 600, 2,000, and 4,000 IU/d groups, respectively (p < .001). Participants taking 2,000 IU/d compared to other doses performed better in learning and memory tests (p < .05), yet the 4,000 IU/d group had a slower reaction time compared to the 600 IU/d group. Multiple regression indicated that serum undercarboxylated osteocalcin predicted tasks associated with reaction time and executive function, whereas body mass index and parathyroid hormone negatively predicted reaction time and executive function (p ≤ .01). These data suggest that vitamin D has differential effects on domain-specific cognitive measures and that a higher dose may negatively affect reaction time.

Using Activities of Daily Living Assessments to Measure the Effectiveness of Vitamin D Supplements in Elderly Long-Stay Patients

1987 ◽  
Vol 50 (2) ◽  
pp. 60-62 ◽  
Author(s):  
D Corless ◽  
M Ellis ◽  
E Dawson ◽  
F Fraser ◽  
S Evans ◽  
...  
Keyword(s):  
Vitamin D ◽  
Elderly Patients ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Controlled Trial ◽  
Double Blind ◽  
Hydroxyvitamin D ◽  
Low Concentrations ◽  
25 Hydroxyvitamin D ◽  
Vitamin D Supplements

Selected activities of daily living were used to measure improvement in independence of long-stay elderly patients known to have low concentrations of plasma 25-hydroxyvitamin D. This was a double-blind random controlled trial lasting between 8 and 40 weeks. No significant changes were found in either group.

scholarly journals Effect of Vitamin D on Canine Distalization and Alveolar Bone Density Using Multi-slice Spiral CT: A Randomized Controlled Trial

2019 ◽  
Vol 20 (12) ◽  
pp. 1430-1435
Author(s):  
Venith J Pulikkottil ◽  
Lakshmi Lakshmanan ◽  
Sanju T Varughese ◽  
Pavithra U Shamanna ◽  
Neeraj Goyal ◽  
...  
Keyword(s):  
Vitamin D ◽  
Randomized Controlled Trial ◽  
Bone Density ◽  
Alveolar Bone ◽  
Controlled Trial ◽  
Spiral Ct ◽  
Randomized Controlled ◽  
Canine Distalization
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