scholarly journals High Dietary Calcium Reduces Body Fat Content, Digestibility of Fat, and Serum Vitamin D in Rats

2003 ◽  
Vol 11 (3) ◽  
pp. 387-394 ◽  
Author(s):  
Emilia Papakonstantinou ◽  
William P. Flatt ◽  
Peter J. Huth ◽  
Ruth B.S. Harris
Keyword(s):  
Vitamin D ◽  
Body Fat ◽  
Serum Vitamin ◽  
Dietary Calcium ◽  
Fat Content ◽  
Serum Vitamin D ◽  
Body Fat Content

scholarly journals Canadian newcomer children’s bone health and vitamin D status

2019 ◽  
Vol 44 (7) ◽  
pp. 796-803
Author(s):  
Ginny Lane ◽  
Christine Nisbet ◽  
Susan J. Whiting ◽  
Hassan Vatanparast
Keyword(s):  
Vitamin D ◽  
Bone Mineral Content ◽  
Vitamin D Deficiency ◽  
Body Fat ◽  
Calcium Intake ◽  
Mineral Content ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Total Body Fat ◽  
Total Body

Adequate calcium intake and supply of vitamin D during childhood play important roles in ensuring adequate bone mass gain to achieve optimal peak bone mass. The Healthy Immigrant Children study employed a mixed-method cross-sectional study design to characterize the health and nutritional status of 300 immigrant and refugee children aged 3–13 years who had been in Canada for less than 5 years. This paper presents bone mineral content and vitamin D status data along with qualitative data that deepen the understanding of newcomer bone health status. A significantly higher percentage of refugee children (72.3%) had insufficient (<50 nmol/L) or deficient (<30 nmol/L) serum vitamin D compared with immigrants (53.2%). Vitamin D deficiency was most common among ethnic minority girls. Newcomer children with higher intakes of vitamin D, younger newcomer children, and those from western Europe or the United States had higher serum vitamin D levels. Immigrants had significantly higher mean total body bone mineral content compared with refugees. Total body fat, serum vitamin D, calcium intake, height, height by calcium intake, total body fat by calcium intake, and total body fat by height predicted total body bone mineral content levels. Vitamin D deficiency among newcomer children may be related to lack of knowledge regarding children’s vitamin D requirements in the Canadian environment, dietary habits established in country of origin, low income that limits healthy dietary choices, and lifestyle habits that limit exposure to sunlight. Results suggest a need to screen newcomer children and pregnant women for vitamin D deficiency and support early intervention.

scholarly journals Paradoxical Relationships between Serum 25(OH)D and Ferritin with Body Composition and Burnout: Variation by Sex and Sports Team

Endocrines ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 320-333
Author(s):  
Tamara Hew-Butler ◽  
Carrie Aprik ◽  
Brigid Byrd ◽  
Kristin Landis-Piwowar ◽  
Valerie Smith-Hale ◽  
...  
Keyword(s):  
Vitamin D ◽  
Body Composition ◽  
Body Fat ◽  
Serum Ferritin ◽  
Lean Mass ◽  
Serum Vitamin ◽  
Collegiate Athletes ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Athlete Burnout

Adequate serum vitamin D and iron levels are thought to influence physical training adaptations and mood positively. The primary purpose of this prospective, observational study was to investigate relationships between serum 25-OH vitamin D/25(OH)D and serum ferritin levels with body composition and athlete burnout symptoms. Seventy-three collegiate athletes (female: n = 49; male: n = 24) from indoor (swimming, basketball) and outdoor (soccer, cross-country) sports were tested pre-season and post-season for serum 25(OH)D and serum ferritin (nutrient biomarkers) via venipuncture; body composition (total lean mass, bone mineral density/BMD, and % body fat) via dual energy X-ray absorptiometry (DXA) scans; and athlete burnout symptoms (post-season) via the athlete burnout questionnaire (ABQ). When male and female cohorts were combined, significant correlations (Pearson’s r) were noted between pre-season serum 25(OH)D versus the change (∆: post-season minus pre-season) in both BMD (r = −0.34; p = 0.0003) and % body fat (r = −0.28; p = 0.015). Serum ferritin ∆ was significantly associated with lean mass ∆ (r = −0.34; p = 0.003). For burnout symptoms, serum 25(OH)D ∆ significantly explained 20.6% of the variance for devaluation of the sport in the male cohort only. Across time, serum 25(OH)D levels decreased while serum ferritin levels increased, non-significantly, in both males and females. Relationships between nutrient biomarkers and body composition were opposite of physiological expectations.

Dietary calcium intake and serum vitamin D are major determinants of bone mass variations in women. A longitudinal study

2002 ◽  
Vol 14 (5) ◽  
pp. 382-388 ◽  
Author(s):  
Antonio del Puente ◽  
Antonella Esposito ◽  
Silvia Savastano ◽  
Assunta Carpinelli ◽  
Loredana Postiglione ◽  
...  
Keyword(s):  
Vitamin D ◽  
Longitudinal Study ◽  
Bone Mass ◽  
Calcium Intake ◽  
Serum Vitamin ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Serum Vitamin D

scholarly journals Association of serum vitamin D with change in weight and total body fat in a German cohort of older adults

2015 ◽  
Vol 70 (1) ◽  
pp. 136-139 ◽  
Author(s):  
S Vogt ◽  
A Zierer ◽  
M Laxy ◽  
W Koenig ◽  
B Linkohr ◽  
...  
Keyword(s):  
Older Adults ◽  
Vitamin D ◽  
Body Fat ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Total Body Fat ◽  
Total Body

scholarly journals Better knowledge on vitamin D and calcium in older people is associated with a higher serum vitamin D level and a higher daily dietary calcium intake

2011 ◽  
Vol 71 (4) ◽  
pp. 474-482 ◽  
Author(s):  
Christian Oudshoorn ◽  
Klaas A Hartholt ◽  
Johannes PTM van Leeuwen ◽  
Edgar M Colin ◽  
Nathalie van der Velde ◽  
...  
Keyword(s):  
Vitamin D ◽  
Older People ◽  
Calcium Intake ◽  
Serum Vitamin ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Serum Vitamin D

scholarly journals The impact of vitamin D supplementation on body fat mass in elite male collegiate athletes

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Itaru Kawashima ◽  
Takashi Tsukahara ◽  
Ryosuke Kawai ◽  
Takafumi Mizuno ◽  
Shinya Ishizuka ◽  
...  
Keyword(s):  
Vitamin D ◽  
Body Fat ◽  
Serum Vitamin ◽  
Collegiate Athletes ◽  
Vitamin D Supplementation ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Serum Vitamin D ◽  
Supplement Group ◽  
The Impact

Abstract Background Whether vitamin D supplementation has any effect on body fat percentage, especially among elite athletes, remains unclear. The aim of this study was to evaluate the effect of vitamin D supplementation on serum vitamin D level in elite male collegiate athletes and to analyze its effect on body fat percentage. Methods We enrolled a total of 42 elite male collegiate athletes in this prospective cohort study. In March 2020, body composition monitoring and blood test were performed. All athletes were provided with vitamin D3 supplement tablets of 25 μg/day. The use of the supplement was dependent on athletes’ preference. During the study period, their club activities were stopped for 2 months due to the coronavirus disease 2019 outbreak. A second examination, similar to the first one, was performed after approximately 3 months. Supplement usage by each athlete was also confirmed. The participants were divided into a non-supplement group (without supplementation, n = 15) and a supplement group (with supplementation, n = 27). Results Regarding baseline data at initial examination, the non-supplement and supplement groups showed significant differences in the mean body fat percentage (9.0% and 12.1%, respectively; P = 0.03) and serum 25(OH)D level (22.7 and 18.5 ng/mL, respectively, P = 0.02). At the time of the second examination, there were no significant differences in the results of both the groups. In terms of mean change value from the first to the second examination, there were significant differences in body fat percentage (1.9 and 0.2%, respectively, P = 0.02) and serum 25(OH)D level (1.7 and 7.2 ng/mL, respectively, P < 0.001) between the two groups. A significant negative correlation was observed between the change ratio of body fat percentage and change value of serum 25(OH)D level (r =  − 0.37, P = 0.02). Conclusions Vitamin D supplementation of 25 μg/day significantly increased the serum 25(OH)D level in elite male collegiate athletes. Vitamin D supplementation may play a role in maintaining athletes’ body fat percentage under circumstances where sports activity has decreased.

scholarly journals Effect of serum vitamin D levels on weight loss in obese patients doing aerobic exercises: A retrospective study

2020 ◽  
Vol 7 (2) ◽  
pp. 400-404
Author(s):  
Ahmet Karadağ ◽  
Meryem Otu
Keyword(s):  
Vitamin D ◽  
Weight Loss ◽  
Serum Level ◽  
Aerobic Exercise ◽  
Body Fat ◽  
Serum Vitamin ◽  
Exercise Program ◽  
Obese Patients ◽  
Serum Vitamin D ◽  
Vitamin D Levels

Objective:   This study evaluates the effect of serum vitamin D (Vit D) levels on weight loss in obese patients during an aerobic exercise program. Material and Methods: The study included 88 participants with body mass index (BMI) ≥25 kg/m2. A serum level of 25(OH)D3 >30 ng/ml was accepted as normal, 20–29 ng/ml as insufficient and <20 ng/ml as deficient. The obese patients were classified into three groups based on a serum level of 25(OH)D3. All participants enrolled on an eight-week aerobic exercise program. The BMI, body fat percentage (BF%) and body fat mass (BFM) of the participants were measured before and after aerobic exercise. Results: No statistically significant differences were identified between the groups in the first and last measured BMI, BF% and BFM values (p>0.05). The differences between the first and last measured weights, BMI, BF% and BFM were statistically significant within the groups (p<0.05). Conclusion: Aerobic exercise can lead to weight loss in obese patients, although the level of serum Vit D has no effect on weight loss in obese patients engaged in aerobic exercise.

Clinical factors correlated with vitamin D deficiency in patients with obesity scheduled for bariatric surgery: A single center experience

2020 ◽  
Vol 90 (3-4) ◽  
pp. 346-352
Author(s):  
Vincenzo Pilone ◽  
Salvatore Tramontano ◽  
Carmen Cutolo ◽  
Federica Marchese ◽  
Antonio Maria Pagano ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Inverse Correlation ◽  
Model Assessment ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Female Sex ◽  
Vitamin D Levels

Abstract. We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m2, respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20–29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = −0.280, p < 0.05; r = −0.407, p = 0.038; r = −0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [−0.413 ± 0.12, CI95 % (−0.659; −0.167), p = 0.006], whereas no significant association between hypertension [−1.005 ± 1.65, CI95 % (−4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [−0.44 ± 2.20, CI95 % (−4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.

Relationship Between Nutrient Intake and Vitamin D Status in Osteoporotic Women

2007 ◽  
Vol 77 (6) ◽  
pp. 376-381 ◽  
Author(s):  
de Souza Genaro ◽  
de Paiva Pereira ◽  
de Medeiros Pinheiro ◽  
Szejnfeld ◽  
Araújo Martini
Keyword(s):  
Vitamin D ◽  
Mineral Metabolism ◽  
Sodium Intake ◽  
Serum Vitamin ◽  
Cross Sectional Study ◽  
Dietary Intakes ◽  
Mineral Density ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Dietary Records

Vitamin D is essential for maintaining calcium homeostasis and optimizing bone health. Its inadequacy is related to many factors including dietary intake. The aim of the present study was to evaluate serum 25(OH)D and its relationship with nutrient intakes in postmenopausal Brazilian women with osteoporosis. This cross-sectional study comprised 45 free-living and assisted elderly at São Paulo Hospital. Three-day dietary records were used to assess dietary intakes. Bone mineral density was measured with a dual-energy X-ray absorptiometer (DXA). Blood and urine sample were collected for analysis of biochemical markers of bone and mineral metabolism. Insufficiency of vitamin D was observed in 24.4% of the women and optimal levels (≥ 50 nmol/L) were observed in 75.6%. Parathyroid hormone was above the reference range in 51% of the participants. The mean calcium (724 mg/day) and vitamin D (4.2 μ g/day) intakes were lower than the value proposed by The Food and Nutrition Board and sodium intake was more than two-fold above the recommendation. Higher levels of serum 25(OH)D were inversely associated with sodium intake. Dietary strategies to improve serum vitamin D must focus on increasing vitamin D intake and should take a reduction of sodium intake into consideration.

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