25-Hydroxyvitamin D and Pre-Clinical Alterations in Inflammatory and Hemostatic Markers: A Cross Sectional Analysis in the 1958 British Birth Cohort

This study aims to describe objectively measured physical activity (PA) in different periods of the day in young adults according to sex, socioeconomic position and during weekdays and weekends. This is a cross-sectional analysis carried out with the participants of the 1993 Pelotas Birth Cohort at 22 years. PA was assessed by triaxial accelerometer. Descriptive analyses were performed presenting the time spent on light PA (LPA) and bouted moderate to vigorous PA (MVPA) in different periods of the day (morning - 6am to 11:59 am, afternoon – 12pm to 7:59 pm and night – 8pm to 11:59pm). The present study included 2,766 individuals (48.2% male and 51.8% female). LPA was higher among women, while bouted MVPA levels were higher among men. The median of PA was higher on weekdays compared to weekends for all intensities. The bouted MVPA medians in the morning and at night were zero minutes for all days and both sexes. The richest group presented a higher percentage of individuals with zero minutes. PA may vary according to different periods of the day and intensity. The absence of PA practice was markedly influenced by sex and socioeconomic position.

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Relationship between Body Composition and Pulmonary Function in Early Adult Life: A Cross-Sectional Analysis Nested in Two Birth Cohort Studies

PLoS ONE ◽

10.1371/journal.pone.0163428 ◽

2016 ◽

Vol 11 (9) ◽

pp. e0163428 ◽

Cited By ~ 5

Author(s):

Paula Duarte de Oliveira ◽

Fernando C. Wehrmeister ◽

Rogelio Pérez-Padilla ◽

Helen Gonçalves ◽

Maria Cecília F. Assunção ◽

...

Keyword(s):

Body Composition ◽

Pulmonary Function ◽

Cohort Studies ◽

Birth Cohort ◽

Adult Life ◽

Cross Sectional ◽

Cross Sectional Analysis ◽

Early Adult Life ◽

Sectional Analysis

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25-Hydroxyvitamin D, IGF-1, and Metabolic Syndrome at 45 Years of Age: A Cross-Sectional Study in the 1958 British Birth Cohort

Diabetes ◽

10.2337/db07-1122 ◽

2007 ◽

Vol 57 (2) ◽

pp. 298-305 ◽

Cited By ~ 255

Author(s):

E. Hypponen ◽

B. J. Boucher ◽

D. J. Berry ◽

C. Power

Keyword(s):

Metabolic Syndrome ◽

Birth Cohort ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Hydroxyvitamin D ◽

25 Hydroxyvitamin D

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Governance and Privacy in a Provincial Data Repository - A Cross-sectional Analysis of Longitudinal Birth Cohort Parent Participants’ Perspectives on Sharing Adult Vs. Child Research Data

Proceedings of the 6th International Conference on Data Science, Technology and Applications ◽

10.5220/0006430802080215 ◽

2017 ◽

Cited By ~ 1

Author(s):

Shawn X. Dodd ◽

Kiran Pohar Manhas ◽

Stacey Page ◽

Nicole Letourneau ◽

Xinjie Cui ◽

...

Keyword(s):

Birth Cohort ◽

Research Data ◽

Data Repository ◽

Cross Sectional ◽

Cross Sectional Analysis ◽

Child Research ◽

Sectional Analysis

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Association between 25-Hydroxyvitamin D, Parathyroid Hormone, Vitamin D and Calcium Intake, and Bone Density in Healthy Adult Women: A Cross-Sectional Analysis from the D-SOL Study

Nutrients ◽

10.3390/nu11061267 ◽

2019 ◽

Vol 11 (6) ◽

pp. 1267 ◽

Cited By ~ 4

Author(s):

Marcela M. Mendes ◽

Kathryn H. Hart ◽

Susan A. Lanham-New ◽

Patrícia B. Botelho

Keyword(s):

Bone Mineral Density ◽

Vitamin D ◽

Parathyroid Hormone ◽

Bone Mineral ◽

Mineral Density ◽

Cross Sectional ◽

Bone Parameters ◽

Hydroxyvitamin D ◽

25 Hydroxyvitamin D ◽

Sectional Analysis

There is still limited data on the association between 25-hydroxyvitamin D (25(OH)D), parathyroid hormone (PTH), and bone health in healthy younger adults, particularly in Latin America. This cross-sectional analysis aimed to investigate the associations of 25(OH)D and plasma PTH concentrations with bone parameters, and potential confounders, in women living in a high (England) or low (Brazil) latitude country. Bone was assessed by either peripheral quantitative computed tomography (pQCT) (England) or dual-energy x-ray absorptiometry (DXA) scan (Brazil), serum 25(OH)D concentrations by high performance liquid chromatography tandem mass spectrometry (HPLC-MS) and PTH by the chemiluminescent method. In participants living in England, total volumetric bone mineral density (vBMD) was significantly higher in women <29 years compared to ≥30 years, and total and cortical vBMD values at the 66% site were negatively correlated with weight and body mass index (BMI). In participants living in Brazil, age was positively correlated with bone mineral density (BMD) at the femur and bone mineral content (BMC), and weight, BMI, and body fat were correlated with BMD (lumbar spine and femur) and BMC. PTH concentrations were negatively correlated with 25(OH)D concentrations, and the prevalence of secondary hyperparathyroidism was 28.6% (n = 14) in participants with concentrations <25 nmol/L and 12.2% (n = 41) with concentrations between 25 and 49.9 nmol/L, compared to 6.3% (n = 79) in those with concentrations ≥50 nmol/L. In conclusion, weight and BMI were significantly correlated with bone parameters in both groups and age was significantly correlated with BMD at the femoral neck for women living in Brazil only. Although 25(OH)D concentrations were not correlated to bone parameters at any sites, in either country, PTH concentrations showed a significant correlation with total vBMD at the 66% site for women living in England. Secondary hyperparathyroidism was more common amongst those with deficient and insufficient vitamin D status.

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