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How (not) to interpret a non-causal association in sports injury science
Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review
DOI
- https://doi.org/10.1016/j.ptsp.2018.05.009
Forlagets udgivne version
- Mette Hjerrild, Aarhus Universitet ,
- Solvej Videbaek
- Daniel Theisen, Sports Medicine Research Laboratory, Luxembourg Institute of Health, 76 rue d'Eich, L-1460, Luxembourg. Electronic address: daniel.theisen@lih.lu., Luxemborg
- Laurent Malisoux, Sports Medicine Research Laboratory, Luxembourg Institute of Health, 76 rue d'Eich, L-1460, Luxembourg. Electronic address: laurent.malisoux@lih.lu. ,
- Rasmus Oestergaard Nielsen
OBJECTIVE: To discuss the interpretability of non-causal associations to sports injury development exemplified via the relationship between navicular drop (ND) and running-related injury (RRI) in novice runners using neutral shoes.
DESIGN: 1-year prospective cohort study.
SETTING: Denmark.
PARTICIPANTS: 926 novice runners, representing 1852 feet, were included.
MAIN OUTCOME MEASURE: The outcome was "a musculoskeletal complaint of the lower extremity or back caused by running, which restricted the amount of running for at least a week".
RESULTS: Fewer feet with small ND than those feet with a reference ND sustained injuries at 50 (risk difference (RD) = -4.1% [95%CI = -7.9%;-0.4%]) and 100 km (RD = -5.3% [95%CI = -9.9%;-0.7%]). Similarly, fewer feet with a large ND sustained injuries than the feet with a reference drop at 250 (RD = -7.6% [95%CI = -14.9%;-0.3%]) and 500 km (RD = -9.8% [95%CI = -19.1%;-0.4%]).
CONCLUSION: Non-causal associations can help to identify sub-groups of athletes at an increased or decreased risk of sports injury. Based on the current results, those with a small or large navicular drop sustain fewer injuries than those with a reference drop. Importantly, navicular drop does not cause RRIs, but influences the relationship between training load and RRI. This illustrates that non-causal associations are unsuitable to respond to the question: Why do sports injury develop?
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Physical Therapy in Sport |
| Vol/bind | 32 |
| Sider (fra-til) | 121-125 |
| Antal sider | 5 |
| ISSN | 1466-853X |
| DOI | |
| Status | Udgivet - jul. 2018 |
Bibliografisk note
Copyright © 2018 Elsevier Ltd. All rights reserved.
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