scholarly journals Long-Term Effects of Vitamin D Supplementation in Obese Children During Integrated Weight–Loss Programme—A Double Blind Randomized Placebo–Controlled Trial

Nutrients ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1093 ◽  
Author(s):  
Michał Brzeziński ◽  
Agnieszka Jankowska ◽  
Magdalena Słomińska-Frączek ◽  
Paulina Metelska ◽  
Piotr Wiśniewski ◽  
...  

Background: Vitamin D was studied in regards to its possible impact on body mass reduction and metabolic changes in adults and children with obesity yet there were no studies assessing the impact of vitamin D supplementation during a weight management program in children and adolescence. The aim of our study was to assess the influence of 26 weeks of vitamin D supplementation in overweight and obese children undergoing an integrated 12–months’ long weight loss program on body mass reduction, body composition and bone mineral density. Methods: A double–blind randomized placebo–controlled trial. Vitamin D deficient patients (<30 ng/ml level of vitamin D) aged 6–14, participating in multidisciplinary weight management program were randomly allocated to receiving vitamin D (1200 IU) or placebo for the first 26 weeks of the intervention. Results: Out of the 152 qualified patients, 109 (72%) completed a full cycle of four visits scheduled in the program. There were no difference in the level of BMI (body mass index) change – both raw BMI and BMI centiles. Although the reduction of BMI centiles was greater in the vitamin D vs. placebo group (−4.28 ± 8.43 vs. −2.53 ± 6.10) the difference was not statistically significant (p = 0.319). Similarly the reduction in fat mass—assessed both using bioimpedance and DEXa was achieved, yet the differences between the groups were not statistically significant. Conclusions: Our study ads substantial results to support the thesis on no effect of vitamin D supplementation on body weight reduction in children and adolescents with vitamin D insufficiency undergoing a weight management program.

Author(s):  
Michał Brzeziński ◽  
Agnieszka Jankowska ◽  
Magdalena Słomińska-Frączek ◽  
Paulina Metelska ◽  
Piotr Wiśniewski ◽  
...  

Background: Vitamin D was studied in regards to its possible impact on body mass reduction and metabolic changes in adults and children with obesity yet there were no studies assessing the impact of vitamin D supplementation during a weight management programme in children and adolescence. The aim of our study was to assess the influence of 26 weeks of vitamin D supplementation in overweight and obese children undergoing an integrated 12-months&rsquo; long weight loss programme on body mass reduction, body composition and bone mineral density. Methods: A double-blind randomized placebo-controlled trial. Vitamin D deficient patients ( &lt;30 ng/ml level of vitamin D) aged 6-14, participating in multidisciplinary weight management programme were randomly allocated to receiving vitamin D (1200 IU) or placebo for the first 26 weeks of the intervention. Results: Out of the 152 qualified patients, 109 (72%) completed a full cycle of four visits scheduled in the programme. There were no difference in the level of BMI change. Although the reduction was greater in the vitamin D vs. placebo group (-4.28 &plusmn; 8.43 vs. -2.53 &plusmn;6.10) the difference was not statistically significant (p=0.319). Similarly the reduction in fat mass &ndash; assessed both using bioimpedance and DEXa was achieved, yet the differences between the groups were not statistically significant. Conclusions: Our study ads substantial results to support the thesis on no effect of vitamin D supplementation on body weight reduction in children and adolescents with vitamin D insufficiency undergoing a weight management programme. Trial registration no: NCT 02828228; trial registration date: 8 June 2016 registered in: ClinicalTrials.gov.


Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1280
Author(s):  
Jan Mieszkowski ◽  
Andżelika Borkowska ◽  
Błażej Stankiewicz ◽  
Andrzej Kochanowicz ◽  
Bartłomiej Niespodziński ◽  
...  

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.


2021 ◽  
pp. 106487
Author(s):  
Katherine D. Hoerster ◽  
Lamont Tanksley ◽  
Nadiyah Sulayman ◽  
Juliana Bondzie ◽  
Moriah Brier ◽  
...  

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 547
Author(s):  
Elisabeth Lerchbaum ◽  
Verena Theiler-Schwetz ◽  
Martina Kollmann ◽  
Monika Wölfler ◽  
Stefan Pilz ◽  
...  

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.


2021 ◽  
pp. 136749352110375
Author(s):  
Zina C Mc Sweeney ◽  
Morgan D McSweeney ◽  
Shirley H Huang ◽  
Samareh G Hill

Childhood obesity is a major public health concern. However, predictors of successful outcomes for patients treated at multidisciplinary community hospital–based pediatric weight management programs remain poorly understood. We conducted a retrospective analysis to evaluate 633 pediatric patients from ages 2 to 18 at a tertiary pediatric weight management program in 2018. Predictors were evaluated in univariate comparisons, and significant variables were included in a linear regression analysis to identify factors associated with improvements in body mass index relative to the age- and sex-specific 95th percentile body mass index (%BMIp95). We found that male sex and increased number of clinical visits were independently and significantly associated with reductions in %BMIp95. Baseline %BMIp95, age, preferred language, and insurance status were not significant predictors of outcomes. A total of 398 (63%) patients experienced a decrease in %BMIp95 from baseline to follow-up. One quarter (24.8%) of patients experienced a decrease in %BMIp95 of at least 5%, a threshold associated with cardiometabolic improvements. Further, we observed significant improvements in cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, HbA1c, and waist circumference. These findings support a potential need for sex- and gender-tailored care as well as the benefits of increased access to pediatric weight management programs.


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