scholarly journals The relationship between physical activity and vitamin D status in postpartum lactating and formula-feeding women

2018 ◽  
Vol 177 ◽  
pp. 261-265 ◽  
Author(s):  
Jordan T. Hall ◽  
Myla Ebeling ◽  
Judy R. Shary ◽  
Nina Forestieri ◽  
Carol L. Wagner
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
Formula Feeding ◽  
Vitamin D Status ◽  
The Relationship

scholarly journals Modifiable factors of vitamin D status among a Brazilian osteoporotic population attended a public outpatient clinic

2014 ◽  
Vol 58 (5) ◽  
pp. 572-582 ◽  
Author(s):  
Marília Brasilio Rodrigues Camargo ◽  
llda Sizue Kunii ◽  
Lilian Fukusima Hayashi ◽  
Patrícia Muszkat ◽  
Catherine Gusman Anelli ◽  
...  
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
Dietary Habits ◽  
Vitamin D Supplementation ◽  
Community Dwelling ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Cross Sectional ◽  
Modifiable Factors ◽  
The Mean

Objectives To evaluate the serum 25-hydroxyvitamin D [25(OH)D] concentration in Brazilian osteoporotic patients and the modifiable factors of vitamin D status in this population. Subjects and methods In a cross-sectional study, 363 community-dwelling patients who sought specialized medical care were evaluated between autumn and spring in São Paulo, Brazil. Serum levels of 25(OH)D and parathormone (PTH), biochemical and anthropometric measurements, and bone density scans were obtained. The group was assessed using two questionnaires: one questionnaire covered lifestyle and dietary habits, skin phototype, sun exposure, medical conditions, and levels of vitamin D supplementation (cholecalciferol); the other questionnaire assessed health-related quality-of-life. Logistic regression and a decision tree were used to assess the association between the variables and the adequacy of vitamin D status. Results The mean age of the overall sample was 67.9 ± 8.6 years, and the mean 25(OH)D concentration was 24.8 ng/mL. The prevalence of inadequate vitamin D status was high (73.3%), although 81.5% of the subjects were receiving cholecalciferol (mean dose of 8,169 IU/week). 25(OH)D was positively correlated with femoral neck bone mineral density and negatively correlated with PTH. In the multivariate analysis, the dose of cholecalciferol, engagement in physical activity and the month of the year (September) were associated with improvement in vitamin D status. Conclusions In this osteoporotic population, vitamin D supplementation of 7,000 IU/week is not enough to reach the desired 25(OH)D concentration (≥ 30 ng/mL). Engagement in physical activity and the month of the year are modifiable factors of the vitamin D status in this population.

scholarly journals Differences in vitamin D status and calcium metabolism in Saudi Arabian boys and girls aged 6 to 18 years: effects of age, gender, extent of veiling and physical activity with concomitant implications for bone health

2012 ◽  
Vol 15 (10) ◽  
pp. 1845-1853 ◽  
Author(s):  
Maryam A Al-Ghamdi ◽  
Susan A Lanham-New ◽  
Jalal A Kahn
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
Saudi Arabia ◽  
Parathyroid Hormone ◽  
Bone Health ◽  
Age Groups ◽  
Hypovitaminosis D ◽  
Vitamin D Status ◽  
Kingdom Of Saudi Arabia ◽  
Cross Sectional

AbstractObjectiveFew data exist looking at vitamin D status and bone health in school-aged boys and girls from Saudi Arabia. The present study aimed to determine the extent of poor vitamin D status in school boys and girls aged 6–18 years and to examine if there was any difference in status with age, physical activity and veiling and concomitant effects on bone.DesignCross-sectional study.SettingJeddah, Kingdom of Saudi Arabia.SubjectsA total of 150 boys (7–16 years) and 150 girls (6–18 years) from local schools were divided into age categories: 6–9 years (elementary school); 10–12 years (secondary school); 13–14 years (middle years); 15–18 years (high school).ResultsVitamin D status was significantly lower in girls than boys in all age groups (P < 0·01), with the 15–18-year-old girls having the lowest level (22·0 (sd 9·4) nmol/l) in comparison to the 15–18-year-old boys (39·3 (sd 14·0) nmol/l) and the 6–9-year-old girls (41·2 (sd 9·3) nmol/l). Parathyroid hormone status was highest in the 15–18-year-old girls in comparison to boys of the same age. A total of 64 % of 15–18-year-old girls had 25-hydroxyvitamin D (25OHD) status <25 nmol/l in comparison to 31 % in the 13–14 years age category, 26 % in the 10–12 years category and 2·5 % in the 6–9 years category. No boys had 25OHD status <25 nmol/l. Fully veiled girls had lower 25OHD status than partly veiled or unveiled girls (P < 0·05). Low 25OHD and high parathyroid hormone was associated with lower bone mass in the 6–9 years and 13–14 years age groups (P < 0·05).ConclusionsThese data suggest significant hypovitaminosis D in older adolescent females, which is a cause for concern given that there is currently no public health policy for vitamin D in the Kingdom of Saudi Arabia.

scholarly journals Vitamin D Serum Levels in the UK Population, including a Mathematical Approach to Evaluate the Impact of Vitamin D Fortified Ready-to-Eat Breakfast Cereals: Application of the NDNS Database

Nutrients ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1868
Author(s):  
Wim Calame ◽  
Laura Street ◽  
Toine Hulshof
Keyword(s):  
Vitamin D ◽  
Daily Intake ◽  
Serum Levels ◽  
Vitamin D Status ◽  
Nutrition Survey ◽  
Breakfast Cereals ◽  
Vitamin D Intake ◽  
The Uk ◽  
The Impact ◽  
The Relationship

Vitamin D status is relatively poor in the general population, potentially leading to various conditions. The present study evaluates the relationship between vitamin D status and intake in the UK population and the impact of vitamin D fortified ready-to-eat cereals (RTEC) on this status via data from the National Diet and Nutrition Survey (NDNS: 2008–2012). Four cohorts were addressed: ages 4–10 (n = 803), ages 11–18 (n = 884), ages 19–64 (n = 1655) and ages 65 and higher (n = 428). The impact of fortification by 4.2 μg vitamin D per 100 g of RTEC on vitamin D intake and status was mathematically modelled. Average vitamin D daily intake was age-dependent, ranging from ~2.6 (age range 4–18 years) to ~5.0 μg (older than 64 years). Average 25(OH)D concentration ranged from 43 to 51 nmol/L, the highest in children. The relationship between vitamin D intake and status followed an asymptotic curve with a predicted plateau concentration ranging from 52 in children to 83 nmol/L in elderly. The fortification model showed that serum concentrations increased with ~1.0 in children to ~6.5 nmol/L in the elderly. This study revealed that vitamin D intake in the UK population is low with 25(OH)D concentrations being suboptimal for general health. Fortification of breakfast cereals can contribute to improve overall vitamin D status.

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