The efficacy of lower limb screening tests in predicting PlayerLoad within a professional soccer academy

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Abstract

Context: Training exposure has been associated with injury epidemiology in elite youth soccer, where lower limb musculoskeletal screening is commonly used to highlight injury risk. However, there has been little consideration of the relationship between lower limb screening and the loading response to soccer activities. Objective: To quantify the efficacy of using screening tests to predict the loading elicited in soccer-specific activities, and to develop a hierarchical ordering of musculoskeletal screening tests to identify test redundancy and inform practice. Design: Correlational. Setting: Professional soccer club academy. Participants: 21 elite male soccer players aged 15.7 ± 0.9 years. Intervention: Players completed a battery of five screening tests (knee to wall, hip internal rotation, adductor squeeze, single leg hop, anterior reach), and a 25min standardised soccer session with a GPS unit placed at C7 to collect multi-planar PlayerLoad data. Main Outcome Measures: Baseline data on each screening test, along with uni-axial PlayerLoad in the medio-lateral, anterio-posterior and vertical planes. Results: Stepwise hierarchical modelling of the screening tests revealed that dominant leg knee to wall distance was the most prevalent and powerful predictor of multi-planar PlayerLoad, accounting for up to 42% of variation in uni-axial loading. The adductor squeeze test was the least powerful predictor of PlayerLoad. Of note, one player who incurred a knee injury within three weeks of testing had shown a 20% reduction in knee to wall distance compared with peers, and elicited 23% greater PlayerLoad, supporting the hierarchical model. Conclusions: There was some evidence of redundancy in the screening battery, with implications for clinical choice. Hierarchical ordering and a concurrent case study highlight dominant leg knee to wall distance as the primary predictor of multi-axial loading in soccer. This has implications for the design and interpretation of screening data in elite youth soccer.
Original languageEnglish
JournalJournal of Sport Rehabilitation
Volume9
Early online date31 Oct 2018
DOIs
Publication statusE-pub ahead of print - 31 Oct 2018

Fingerprint

Soccer
Lower Extremity
Knee
Leg
Weight-Bearing
Humulus
Knee Injuries
Wounds and Injuries
Hip
Epidemiology
Cohort Studies
Outcome Assessment (Health Care)

Keywords

  • injury risk
  • mechanical loading

Cite this

@article{0c6f1f8f1b294fd6ba27c44f97e263c2,
title = "The efficacy of lower limb screening tests in predicting PlayerLoad within a professional soccer academy",
abstract = "Context: Training exposure has been associated with injury epidemiology in elite youth soccer, where lower limb musculoskeletal screening is commonly used to highlight injury risk. However, there has been little consideration of the relationship between lower limb screening and the loading response to soccer activities. Objective: To quantify the efficacy of using screening tests to predict the loading elicited in soccer-specific activities, and to develop a hierarchical ordering of musculoskeletal screening tests to identify test redundancy and inform practice. Design: Correlational. Setting: Professional soccer club academy. Participants: 21 elite male soccer players aged 15.7 ± 0.9 years. Intervention: Players completed a battery of five screening tests (knee to wall, hip internal rotation, adductor squeeze, single leg hop, anterior reach), and a 25min standardised soccer session with a GPS unit placed at C7 to collect multi-planar PlayerLoad data. Main Outcome Measures: Baseline data on each screening test, along with uni-axial PlayerLoad in the medio-lateral, anterio-posterior and vertical planes. Results: Stepwise hierarchical modelling of the screening tests revealed that dominant leg knee to wall distance was the most prevalent and powerful predictor of multi-planar PlayerLoad, accounting for up to 42{\%} of variation in uni-axial loading. The adductor squeeze test was the least powerful predictor of PlayerLoad. Of note, one player who incurred a knee injury within three weeks of testing had shown a 20{\%} reduction in knee to wall distance compared with peers, and elicited 23{\%} greater PlayerLoad, supporting the hierarchical model. Conclusions: There was some evidence of redundancy in the screening battery, with implications for clinical choice. Hierarchical ordering and a concurrent case study highlight dominant leg knee to wall distance as the primary predictor of multi-axial loading in soccer. This has implications for the design and interpretation of screening data in elite youth soccer.",
keywords = "injury risk, mechanical loading",
author = "Charlie Bowen and Kristian Weaver and Nicola Relph and Matt Greig",
year = "2018",
month = "10",
day = "31",
doi = "10.1123/jsr.2018-0175",
language = "English",
volume = "9",
journal = "Journal of Sport Rehabilitation",
issn = "1056-6716",
publisher = "Human Kinetics Publishers",

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AU - Bowen, Charlie

AU - Weaver, Kristian

AU - Relph, Nicola

AU - Greig, Matt

PY - 2018/10/31

Y1 - 2018/10/31

N2 - Context: Training exposure has been associated with injury epidemiology in elite youth soccer, where lower limb musculoskeletal screening is commonly used to highlight injury risk. However, there has been little consideration of the relationship between lower limb screening and the loading response to soccer activities. Objective: To quantify the efficacy of using screening tests to predict the loading elicited in soccer-specific activities, and to develop a hierarchical ordering of musculoskeletal screening tests to identify test redundancy and inform practice. Design: Correlational. Setting: Professional soccer club academy. Participants: 21 elite male soccer players aged 15.7 ± 0.9 years. Intervention: Players completed a battery of five screening tests (knee to wall, hip internal rotation, adductor squeeze, single leg hop, anterior reach), and a 25min standardised soccer session with a GPS unit placed at C7 to collect multi-planar PlayerLoad data. Main Outcome Measures: Baseline data on each screening test, along with uni-axial PlayerLoad in the medio-lateral, anterio-posterior and vertical planes. Results: Stepwise hierarchical modelling of the screening tests revealed that dominant leg knee to wall distance was the most prevalent and powerful predictor of multi-planar PlayerLoad, accounting for up to 42% of variation in uni-axial loading. The adductor squeeze test was the least powerful predictor of PlayerLoad. Of note, one player who incurred a knee injury within three weeks of testing had shown a 20% reduction in knee to wall distance compared with peers, and elicited 23% greater PlayerLoad, supporting the hierarchical model. Conclusions: There was some evidence of redundancy in the screening battery, with implications for clinical choice. Hierarchical ordering and a concurrent case study highlight dominant leg knee to wall distance as the primary predictor of multi-axial loading in soccer. This has implications for the design and interpretation of screening data in elite youth soccer.

AB - Context: Training exposure has been associated with injury epidemiology in elite youth soccer, where lower limb musculoskeletal screening is commonly used to highlight injury risk. However, there has been little consideration of the relationship between lower limb screening and the loading response to soccer activities. Objective: To quantify the efficacy of using screening tests to predict the loading elicited in soccer-specific activities, and to develop a hierarchical ordering of musculoskeletal screening tests to identify test redundancy and inform practice. Design: Correlational. Setting: Professional soccer club academy. Participants: 21 elite male soccer players aged 15.7 ± 0.9 years. Intervention: Players completed a battery of five screening tests (knee to wall, hip internal rotation, adductor squeeze, single leg hop, anterior reach), and a 25min standardised soccer session with a GPS unit placed at C7 to collect multi-planar PlayerLoad data. Main Outcome Measures: Baseline data on each screening test, along with uni-axial PlayerLoad in the medio-lateral, anterio-posterior and vertical planes. Results: Stepwise hierarchical modelling of the screening tests revealed that dominant leg knee to wall distance was the most prevalent and powerful predictor of multi-planar PlayerLoad, accounting for up to 42% of variation in uni-axial loading. The adductor squeeze test was the least powerful predictor of PlayerLoad. Of note, one player who incurred a knee injury within three weeks of testing had shown a 20% reduction in knee to wall distance compared with peers, and elicited 23% greater PlayerLoad, supporting the hierarchical model. Conclusions: There was some evidence of redundancy in the screening battery, with implications for clinical choice. Hierarchical ordering and a concurrent case study highlight dominant leg knee to wall distance as the primary predictor of multi-axial loading in soccer. This has implications for the design and interpretation of screening data in elite youth soccer.

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KW - mechanical loading

U2 - 10.1123/jsr.2018-0175

DO - 10.1123/jsr.2018-0175

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JO - Journal of Sport Rehabilitation

JF - Journal of Sport Rehabilitation

SN - 1056-6716

ER -