Effects of Vitamin D and Exercise on the Wellbeing of Older Community-Dwelling Women: A Randomized Controlled Trial

Gerontology ◽  
2015 ◽  
Vol 62 (4) ◽  
pp. 401-408 ◽  
Author(s):  
Radhika Patil ◽  
Saija Karinkanta ◽  
Kari Tokola ◽  
Pekka Kannus ◽  
Harri Sievänen ◽  
...  
Keyword(s):  
Vitamin D ◽  
Exercise Intervention ◽  
Controlled Trial ◽  
Vitamin D Supplementation ◽  
Community Dwelling ◽  
Mental Wellbeing ◽  
Slight Reduction ◽  
Group Exercise ◽  
Double Blind ◽  
Vitamin D Levels

Background: Evidence for the effects of exercise and vitamin D supplementation on quality of life (QoL), fear of falling (FoF) and mental wellbeing in older adults is conflicting. Objective: To study the effects of vitamin D supplementation and multimodal group exercise on psychosocial functions of wellbeing, including QoL, mental wellbeing and FoF. Method: This is a 2-year, double-blind, placebo-controlled vitamin D and open exercise intervention trial with 409 older Finnish women (70-80 years of age) randomized to 4 treatment arms: (1) placebo without exercise, (2) vitamin D (800 IU/day) without exercise, (3) placebo and exercise, and (4) vitamin D (800 IU/day) with exercise. Exercisers participated in group exercise twice per week for 12 months and once per week for the subsequent 12 months, plus home exercises. Results: When comparing with the placebo without exercise group, there were no statistically significant differences between groups receiving either vitamin D, exercise or both treatments for changes in QoL or mental wellbeing (although a slight decline was seen in mental wellbeing in those receiving vitamin D only, p = 0.044). The initial slight reduction in FoF was significant in all intervention groups compared with controls (p < 0.05), but this was only temporary. Conclusion: Neither vitamin D nor exercise contributes to better QoL, FoF or mental wellbeing in community-dwelling healthy older women with sufficient vitamin D levels.

scholarly journals Effect of Vitamin D on Thyroid Autoimmunity: A Randomized, Double-Blind, Controlled Trial Among Ethnic Minorities

2017 ◽  
Vol 1 (5) ◽  
pp. 470-479 ◽  
Author(s):  
Kirsten V. Knutsen ◽  
Ahmed A. Madar ◽  
Mette Brekke ◽  
Haakon E. Meyer ◽  
Åse Ruth Eggemoen ◽  
...  
Keyword(s):  
Vitamin D ◽  
Middle East ◽  
South Asia ◽  
Vitamin D3 ◽  
Controlled Trial ◽  
Thyroid Autoimmunity ◽  
Vitamin D Supplementation ◽  
Double Blind Study ◽  
Double Blind ◽  
Vitamin D Levels

Context: Autoimmune thyroid disorders have been linked to vitamin D deficiency, but an effect of vitamin D supplementation is not established. Objective: Our objective was to test whether vitamin D compared with placebo could reduce thyroid autoantibodies. Design: Predefined additional analyses from a randomized, double-blind, placebo-controlled trial. Setting: The study was conducted in different community centers in Oslo, Norway. Participants: A total of 251 presumed healthy men and women, aged 18 to 50 years, with backgrounds from South Asia, the Middle East, and Africa were included. Intervention: Daily supplementation with 25 µg (1000 IU) vitamin D3, 10 µg (400 IU) vitamin D3, or placebo for 16 weeks. Outcome Measure: Difference in preintervention and postintervention antithyroid peroxidase antibody (TPOAb) levels. Additional outcomes were differences in thyroid-stimulating hormone (TSH) and free fraction of thyroxine (fT4). Results: There were no differences in change after 16 weeks on TPOAb (27 kU/L; 95% CI, −17 to 72; P = 0.23), TSH (−0.10 mU/L; 95% CI, −0.54 to 0.34; P = 0.65), or fT4 (0.09 pmol/L; 95% CI, −0.37 to 0.55; P = 0.70) between those receiving vitamin D supplementation or placebo. Mean serum 25(OH)D3 increased from 26 to 49 nmol/L in the combined supplementation group, but there was no change in the placebo group. Conclusion: Vitamin D3 supplementation, 25 µg or 10 µg, for 16 weeks compared with placebo did not affect TPOAb level in this randomized, double-blind study among participants with backgrounds from South Asia, the Middle East, and Africa who had low vitamin D levels at baseline.

scholarly journals Vitamin D supplementation in people with IBS has no effect on symptom severity and quality of life: results of a randomised controlled trial

2021 ◽  
Author(s):  
Claire E. Williams ◽  
Elizabeth A. Williams ◽  
Bernard M. Corfe
Keyword(s):  
Quality Of Life ◽  
Vitamin D ◽  
Symptom Severity ◽  
Controlled Trial ◽  
Community Setting ◽  
Vitamin D Supplementation ◽  
Controlled Study ◽  
Double Blind ◽  
Vitamin D Levels

Abstract Purpose Several small trials suggest a benefit of vitamin D supplementation in irritable bowel syndrome (IBS). The generalisability of these reports is limited by their design and scale. This study aimed to assess whether vitamin D supplementation improved IBS symptoms in a UK community setting. Methods This was a randomised, double-blind, placebo-controlled study. Participants were recruited from the community in winter months between December 2017 and March 2019. 135 participants received either vitamin D (3,000 IU p.d.) or placebo for 12 weeks. The primary outcome measure was change in IBS symptom severity; secondary outcomes included change in IBS-related quality of life. Results The participants were analysed on an intent-to-treat basis. 60% of participants were vitamin D deficient or insufficient at baseline. Although vitamin D levels increased in the intervention arm relative to placebo (45.1 ± 32.88 nmol/L vs 3.1 ± 26.15 nmol/L; p < 0.001). There was no difference in the change of IBS symptom severity between the active and placebo trial arms (− 62.5 ± 91.57 vs – 75.2 ± 84.35, p = 0.426) over time. Similarly there was no difference between trial arms in τhe change in quality of life (− 7.7 ± 25.36 vs – 11.31 ± 25.02, p = 0.427). Conclusions There is no case for advocating use of vitamin D in the management of IBS symptoms. The prevalence of vitamin D insufficiency suggests routine screening and supplementation should be implemented in this population for general health reasons. This trial was retrospectively registered with ISRCTN (ISRCTN13277340) on 24th April 2018 after recruiting had been initiated.

scholarly journals Single High-Dose Vitamin D Supplementation as an Approach for Reducing Ultramarathon-Induced Inflammation: A Double-Blind Randomized Controlled Trial

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1280
Author(s):  
Jan Mieszkowski ◽  
Andżelika Borkowska ◽  
Błażej Stankiewicz ◽  
Andrzej Kochanowicz ◽  
Bartłomiej Niespodziński ◽  
...  
Keyword(s):  
Vitamin D ◽  
Inflammatory Marker ◽  
Controlled Trial ◽  
Vitamin D Supplementation ◽  
Oncostatin M ◽  
Control Group ◽  
High Dose ◽  
Double Blind ◽  
Single High Dose ◽  
High Dose Vitamin

Purpose: A growing number of studies indicate the importance of vitamin D supplementation for sports performance. However, the effects of a single high-dose vitamin D supplementation on ultramarathon-induced inflammation have not been investigated. We here analyzed the effect of a single high-dose vitamin D supplementation on the inflammatory marker levels in ultramarathon runners after an ultramarathon run (maximal run 240 km). Methods: In the study, 35 runners (amateurs) were assigned into two groups: single high-dose vitamin D supplementation group, administered vitamin D (150,000 IU) in vegetable oil 24 h before the start of the run (n = 16); and placebo group (n = 19). Blood was collected for analysis 24 h before, immediately after, and 24 h after the run. Results: Serum 25(OH)D levels were significantly increased after the ultramarathon in both groups. The increase was greater in the vitamin D group than in the control group. Based on post-hoc and other analyses, the increase in interleukin 6 and 10, and resistin levels immediately after the run was significantly higher in runners in the control group than that in those in the supplementation group. Leptin, oncostatin M, and metalloproteinase tissue inhibitor levels were significantly decreased in both groups after the run, regardless of the supplementation. Conclusions: Ultramarathon significantly increases the serum 25(OH)D levels. Attenuation of changes in interleukin levels upon vitamin D supplementation confirmed that vitamin D has anti-inflammatory effect on exercise-induced inflammation.

scholarly journals Effects of Vitamin D Supplementation on Surrogate Markers of Fertility in PCOS Women: A Randomized Controlled Trial

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 547
Author(s):  
Elisabeth Lerchbaum ◽  
Verena Theiler-Schwetz ◽  
Martina Kollmann ◽  
Monika Wölfler ◽  
Stefan Pilz ◽  
...  
Keyword(s):  
Vitamin D ◽  
Treatment Effect ◽  
Polycystic Ovary ◽  
Controlled Trial ◽  
Dehydroepiandrosterone Sulfate ◽  
Vitamin D Supplementation ◽  
Double Blind ◽  
Significant Treatment ◽  
Hydroxyvitamin D ◽  
Randomized Controlled

Vitamin D (VD) might play an important role in polycystic ovary syndrome (PCOS) and female fertility. However, evidence from randomized controlled trials (RCT) is sparse. We examined VD effects on anti-Müllerian hormone (AMH) and other endocrine markers in PCOS and non-PCOS women. This is a post hoc analysis of a single-center, double-blind RCT conducted between December 2011 and October 2017 at the endocrine outpatient clinic at the Medical University of Graz, Austria. We included 180 PCOS women and 150 non-PCOS women with serum 25-hydroxyvitamin D (25(OH)D) concentrations <75 nmol/L in the trial. We randomized subjects to receive 20,000 IU of VD3/week (119 PCOS, 99 non-PCOS women) or placebo (61 PCOS, 51 non-PCOS women) for 24 weeks. Outcome measures were AMH, follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol, dehydroepiandrosterone sulfate, and androstenedione. In PCOS women, we observed a significant treatment effect on FSH (mean treatment effect 0.94, 95% confidence interval [CI] 0.087 to 1.799, p = 0.031) and LH/FSH ratio (mean treatment effect −0.335, 95% CI −0.621 to 0.050, p = 0.022), whereas no significant effect was observed in non-PCOS women. In PCOS women, VD treatment for 24 weeks had a significant effect on FSH and LH/FSH ratio but no effect on AMH levels.

Clinical and Metabolic Response to Vitamin D Supplementation in Endometrial Hyperplasia: a Randomized, Double-Blind, Placebo-Controlled Trial

2017 ◽  
Vol 8 (3) ◽  
pp. 185-195 ◽  
Author(s):  
Zohreh Tabassi ◽  
Sedigheh Bagheri ◽  
Mansooreh Samimi ◽  
Hamid Reza Gilasi ◽  
Fereshteh Bahmani ◽  
...  
Keyword(s):  
Vitamin D ◽  
Endometrial Hyperplasia ◽  
Metabolic Response ◽  
Controlled Trial ◽  
Vitamin D Supplementation ◽  
Double Blind ◽  
Double Blind Placebo

scholarly journals O13 Pregnancy vitamin D supplementation leads to greater offspring bone mineral density at 4 years: the MAVIDOS randomised placebo controlled trial

Rheumatology ◽  
2020 ◽  
Vol 59 (Supplement_2) ◽  
Author(s):  
Elizabeth M Curtis ◽  
Rebecca J Moon ◽  
Stefania D'Angelo ◽  
Sarah R Crozier ◽  
Nicholas J Bishop ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Mass ◽  
Bone Mineral ◽  
Controlled Trial ◽  
Vitamin D Supplementation ◽  
Whole Body ◽  
Mineral Density ◽  
Double Blind ◽  
Randomised Controlled

Abstract Background Observational studies have demonstrated associations between maternal gestational vitamin D status and offspring bone health. We have recently shown, in a randomised controlled trial, that pregnancy vitamin D supplementation leads to improved offspring bone mass at birth amongst winter deliveries (when background 25(OH)-vitamin D levels are lowest). In the present analysis, we aimed to evaluate whether the beneficial effect of pregnancy vitamin D supplementation on neonatal bone mass is sustained into early childhood, with bone indices assessed at age 4 years in a subset of participants of the MAVIDOS trial. Methods Pregnant women were randomised in Southampton, Oxford and Sheffield, in a double-blind design, to 1000 IU/day cholecalciferol or matched placebo from 14 weeks’ gestation to birth. At 4 years of age (Southampton participants only, n = 723 births), offspring assessments included anthropometry, whole-body dual-energy x-ray absorptiometry (DXA) [Hologic Horizon, yielding whole body less head (WBLH) bone mineral content (BMC), bone mineral density (BMD), bone area (BA) and lean mass (LM)], and a maternal questionnaire. Linear regression was used to estimate the mean difference (represented by β) in outcomes between the two randomisation arms, adjusted for sex and age at DXA. Further models were additionally adjusted for gestational age, maternal BMI, and child’s sedentary time. All outcomes were standardised to a standard deviation scale, for ease of comparison. Full ethics and MHRA approvals were granted. Results 564 children attended the 4-year visit; 452 had a useable DXA with minimal movement artefact. Maternal pregnancy vitamin D supplementation led to greater offspring indices of bone mass compared with placebo, irrespective of season. For example, WBLH BMD at age 4 years was greater in the offspring of supplemented mothers [β = 0.18 SD (95%CI: 0.00, 0.35), p = 0.047]; there was also evidence of greater LM in the intervention group [β = 0.15 SD (95%CI: -0.02, 0.31), p = 0.081]. In fully adjusted models associations were consistent for lumbar spine indices and for BA and BMC. In keeping with the offspring findings, maternal vitamin D supplementation led to significantly higher maternal plasma 25(OH)D concentrations in late pregnancy (34 weeks’ gestation): placebo group (median(IQR)): 42.4 nmol/l (23.3, 56.4); vitamin D group: 67.4 nmol/l (56.2, 80.3); p &lt; 0.001. Conclusion This is the first ever demonstration in a large placebo-controlled, double-blind randomised controlled trial that maternal pregnancy vitamin D supplementation leads to improved bone and lean mass in children. Our findings suggest that maternal cholecalciferol supplementation may have lasting benefits for offspring musculoskeletal health and thus represent an important public health message. This work was supported by grants from Versus Arthritis 17702, Medical Research Council (MRC #405050259; #U105960371), Bupa Foundation, NIHR Southampton Biomedical Research Centre (BRC), University of Southampton, and NIHR Oxford BRC, University of Oxford. EC was supported by the Wellcome Trust (#201268/Z/16/Z). Disclosures E.M. Curtis None. R.J. Moon None. S. D'Angelo None. S.R. Crozier None. N.J. Bishop None. S. Gopal- Kothandapani None. S. Kennedy None. A.T. Papageorghiou None. R. Fraser None. S.V. Gandhi None. I. Schoenmakers None. A. Prentice None. H.M. Inskip None. K.M. Godfrey None. K. Javaid None. R. Eastell None. C. Cooper None. N.C. Harvey None.

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