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The relationship between dietary intakes assessed by duplicate portion sampling method and bone health in female students: a cross-sectional study

Hadith Tangestani (Department of Nutrition, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran and Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran)
Maryam Ghaseminasab-Parizi (Department of Health Education and Health Promotion, School of Health, Occupational Environment Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran)
Seyed Mohammad Mazloomi (Nutrition Research Center and Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran)
Mesbah Shams (Endocrine and Metabolism Research Center, Shiraz University of Medical Sciences, Shiraz, Iran)
Afsane Ahmadi (Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran)
Mohammad Fararouei (Department of Epidemiology, Shiraz University of Medical Sciences, Shiraz, Iran)

Nutrition & Food Science

ISSN: 0034-6659

Article publication date: 9 September 2022

Issue publication date: 28 February 2023

60

Abstract

Purpose

Osteoporosis is increasingly affecting the young female adults of the Iranian population. The role of nutrition and physical activity on bone mineral content (BMC) and bone mineral density (BMD) in young female students has not been fully examined. This study aims to assess the dietary intake of several nutrients, such as calcium, phosphorus and protein; serum concentrations of vitamin D; and physical activity and their relationship with BMC and BMD in young female students.

Design/methodology/approach

Three-day dietary intakes of 67 female students were measured via duplicate portion sampling (DPS) method. Calcium and phosphorus content of the food samples were determined using atomic absorption spectrophotometer. Protein intake was determined by Kjeldahl method. Serum 25(OH) D concentrations were measured using enzyme-linked immunosorbent assay. Lumbar spine and femoral neck BMD were measured using dual-energy X-ray absorptiometry (DEXA).

Findings

The mean ±SD dietary intake of protein, calcium and phosphorus was 58.8 ± 16.9 g/day, 388 ± 135 mg/day and 1884 ± 682 mg/day, respectively. Significant positive correlation was found between serum vitamin 25(OH) D concentrations and BMC of lumbar spine (r = 0.28, p = 0.016) and BMD of femoral neck (r = 0.29, p = 0.016). Moreover, the authors observed a significant positive correlation between physical activity and femoral neck BMC (r = 0.26, p = 0.03) and BMD (r = 0.28, p = 0.02). This study found no significant associations between dietary intakes of protein, calcium and phosphorus and bone density measurements.

Originality/value

In this study, the authors measured the dietary intake of protein, calcium and phosphorus using DPS method. This study highlights the role of physical activity and serum vitamin 25(OH) D concentrations in female students’ bone health.

Keywords

Acknowledgements

Funding: Shiraz University of Medical Sciences (93-7333).

Ethics approval and consent to participate: The study procedure was approved by the ethics committee of Shiraz University of Medical Sciences (ethical code: IR.SUMS.REC.1393.S7333).

Consent for publication: Written consent for publication obtained from all participants.

Availability of data and materials: The data sets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

Competing interests: The authors report no conflict of interest.

Author contribution: H.T., SM.M. and A.A. provided study concepts and designed the study. H.T., M.G. and M.S. conducted the research. H.T. and M.F. took part in data analysis, interpretation and statistical analysis. H.T., SM.M. and A.A. contributed to manuscript preparation, editing and review. All authors read and approved the final manuscript.

Citation

Tangestani, H., Ghaseminasab-Parizi, M., Mazloomi, S.M., Shams, M., Ahmadi, A. and Fararouei, M. (2023), "The relationship between dietary intakes assessed by duplicate portion sampling method and bone health in female students: a cross-sectional study", Nutrition & Food Science, Vol. 53 No. 3, pp. 618-629. https://doi.org/10.1108/NFS-02-2022-0061

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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