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Bone mineral density, energy availability, and dietary restraint in collegiate cross-country runners and non-running controls

  • William P. McCormackEmail author
  • Todd C. Shoepe
  • Joseph LaBrie
  • Hawley C. Almstedt
Original Article

Abstract

Purpose

Weight-bearing activities such as running have been shown to be osteogenic. However, investigations have also shown that running may lead to site-specific deficiencies in bone mineral density (BMD) as well as overall low BMD. The purpose of this investigation was to evaluate and compare the BMD of female and male collegiate cross-country runners with non-running controls. In addition, energy availability and disordered eating attitudes and behaviors were assessed.

Methods

BMD of 60 collegiate cross-country runners and 47 BMI and age-matched non-running controls were measured via DXA scans. Participants completed a Block 2014 Food Frequency Questionnaire and Eating Disorder Examination Questionnaire.

Results

Controlling for fat-free mass (FFM), male runners showed greater BMD at the femoral neck (0.934 ± 0.029 vs. 0.866 ± 0.028 g cm2, p < 0.05), total hip (1.119 ± 0.023 vs. 1.038 ± 0.021 g cm2, p < 0.05), and whole body (1.119 ± 0.023 vs. 1.038 ± 0.021 g cm2, p < 0.05) than male controls. The female runners had greater whole-body BMD than female controls (1.143 ± 0.018 vs. 1.087 ± 0.022 g cm2, p < 0.05). Runners scored significantly higher than controls in dietary restraint (1.134 ± 1.24 vs. 0.451 ± 0.75, p < 0.05), male runners were significantly higher than male controls in eating concern (1.344 ± 1.08 vs. 0.113 ± 0.27, p < 0.05) and female runners were significantly higher than male runners in shape concern (1.056 ± 1.27 vs. 0.242 ± 0.31, p < 0.05). Forty-two percent of the male runners and 29% of female runners had an energy availability of less than 30 kcals kg−1FFM.

Conclusion

It appears that distance running has beneficial effects on whole-body BMD and site-specific areas. Further research is warranted to further clarify the health effects of eating behaviors and EA of distance runners.

Keywords

Eating disorder examination questionnaire Endurance athletes Weight-bearing exercise 

Abbreviations

ANCOVA

Analysis of covariance

AP

Anterior–posterior

BMD

Bone mineral density

BMI

Body mass index

DXA

Dual-energy X-ray absorptiometry

EA

Energy availability

EDEQ

Eating Disorder Examination Questionnaire

EEE

Exercise energy expenditure

EI

Energy intake

FFM

Fat-free mass

FFQ

Food Frequency Questionnaire

MET

Metabolic equivalent

RED-S

Relative energy deficiency in sport

RMR

Resting metabolic rate

Notes

Acknowledgements

We are very grateful to the research participants, Scott Guerrero, Caitlin Jennings, and Liam Shorrock for their role in the success of this research project. We also acknowledge contributions from student research assistants involved with the data collection and data management including Lily Bramble, Makenzie Cook, and Rowena Feng.

Author contributions

WPM developed the original research inquiry, recruited participants, collected data, analyzed data, and collaborated in writing of manuscript. TCS assisted in data analysis and writing of the manuscript. JWL assisted in recruiting control participants and provided guidance on the composition of the paper. HCA collected data, analyzed data, and collaborated in writing of manuscript. The control group for this investigation was funded by a National Institute on Alcohol Abuse and Alcoholism Grant 5R21AA022942-02.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • William P. McCormack
    • 1
    Email author
  • Todd C. Shoepe
    • 1
  • Joseph LaBrie
    • 2
  • Hawley C. Almstedt
    • 1
  1. 1.Department of Health and Human SciencesLoyola Marymount UniversityLos AngelesUSA
  2. 2.Department of PsychologyLoyola Marymount UniversityLos AngelesUSA

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