ArticleSports health
Uninjured Youth Athlete Performance on Single-Leg Hop Testing: How Many Can Achieve Recommended Return-to-Sport Criterion?
Article in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06995794 (Effect Of Kinesio Tape Versus Knee Strap on Osgood Schlatter Disease in Athletic Children), which is not on this map. Cited by 12 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effect Of Kinesio Tape Versus Knee Strap on Osgood Schlatter Disease in Athletic Children
Who cites it
12 citing papers in PubMed.
- Return-to-play timing and secondary anterior cruciate ligament injury risk in elite soccer players: A transfermarkt-based longitudinal analysis.Journal of experimental orthopaedics · 2026Article
- Relationships among children's muscular strength, neuromuscular control, and resilience.Frontiers in pediatrics · 2026Article
- Strength and balance asymmetries in children and adolescents: comparison between single- and multi-sport participants.BMC sports science, medicine & rehabilitation · 2025Article
- The Effects of the Modified LiiNKInternational journal of environmental research and public health · 2025Article
- Classifiers of anterior cruciate ligament status in female and male adolescents using return-to-activity criteria.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- The Influence of Knee Proprioception and Strength on Lower-Limb Functional Symmetry in Healthy Adults.Muscles (Basel, Switzerland) · 2025Article
- Evaluation of the Back-in-Action test Battery In Uninjured High School American Football Players.International journal of sports physical therapy · 2023Article
- Reactive strength index during single-limb vertical continuous jumps after anterior cruciate ligament reconstruction: cross-sectional study.BMC sports science, medicine & rehabilitation · 2022Article
- Unique Considerations for the Pediatric Athlete During Rehabilitation and Return to Sport After Anterior Cruciate Ligament Reconstruction.Arthroscopy, sports medicine, and rehabilitation · 2022Article
- Comprehensive Return to Competitive Distance Running: A Clinical Commentary.Sports medicine (Auckland, N.Z.) · 2021Review
- Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes.International journal of sports physical therapy · 2021Article
- Reconsideration of Return-to-Sport Decision-Making After Pediatric ACL Injury: A Scoping Review.Sports healthArticle
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCurrent anterior cruciate ligament reconstruction (ACLR) guidelines utilize single-leg hop tests (SLHTs) to assist in return-to-sport decision making. A limb symmetry index (LSI) of ≥90% is often required; however, after ACLR, most youth athletes cannot achieve this standard. Reporting the performance of age-matched normative controls will allow clinicians to compare post-ACLR performance with noninjured peers, improving the utility of SLHTs. The purpose of this study was to report hop test LSI within healthy youth athletes and determine whether athlete performance surpasses post-ACLR requirements. HYPOTHESIS: The LSI for the majority of healthy youth athletes will be ≥90%. STUDY
designCross-sectional cohort study. LEVEL OF EVIDENCE: Level 3.
methodsEach participant performed a single hop (SH), triple hop (TrH), crossover hop (CrH), and timed hop (TiH). A 3-trial mean was utilized to calculate an LSI (nondominant/dominant leg [self-reported kicking leg]) for each hop. The frequency of pass/fail at ≥90% LSI was calculated. Pearson correlation coefficients analyzed the relationship between the different hops, and a 2-way analysis of variance determined the effects of age and sex on LSI.
resultsA total of 340 participants (54% male; mean age, 10.9 ± 1.5 years; range, 8-14 years) were included. The mean LSI was >95% for each SLHT (SH, 97.9% [SD, 0.7]; TrH, 96.6% [SD, 0.6]; CrH, 96.8% [SD, 0.8]; TiH, 96.5% [SD, 0.6]). When analyzed as a test battery, only 45% of participants achieved this standard. Significantly weak to moderate correlations existed among hop tests (
conclusionWhile the mean LSI in our sample was >95% for each individual hop test, participant performance across all SLHT components varied, such that less than half of healthy athletes could achieve ≥90% LSI across all hops. CLINICAL RELEVANCE: Current guidelines require ≥90% LSI on SLHTs. The majority of healthy youth athletes could not achieve this standard, which questions the validity of this LSI threshold in youth athletes after ACLR.
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