PMID- 33150409
OWN - NLM
STAT- Publisher
LR  - 20240222
IS  - 1938-162X (Electronic)
IS  - 1062-6050 (Linking)
DP  - 2020 Nov 5
TI  - Clinical Implications of Jump Distance on Landing Error Scoring System Scores.
LID - 10.4085/68-20 [doi]
AB  - CONTEXT: The Landing Error Scoring System (LESS) screens for risk of non-contact 
      Anterior Cruciate Ligament injury. The LESS requires individuals to jump forward 
      from a 30-cm box to a distance of 50% of their body height. However, different 
      landing distances have been used in the scientific literature. OBJECTIVE: To 
      examine whether landing distance influences LESS outcomes. DESIGN: 
      Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Seventy young active 
      individuals (34 males, 36 females). INTERVENTION: Participants performed 3 x 
      30-cm jump-landing tasks under two landing conditions in randomized order: (1) 
      50% of body height (d50%), (2) self-selected distance (dss). MAIN OUTCOME 
      MEASURES: Mean LESS scores, proportions of individuals categorized at high (LESS 
      >/= 5 errors) and low (LESS < 5 errors) injury risk, and landing distances were 
      compared between conditions using Generalized Estimating Equations. Consistency 
      of risk categorization was examined using odds ratios (OR) and McNemar's tests. 
      McNemar's and Wilcoxon signed rank tests were used to compare occurrence of 
      specific LESS errors. RESULTS: Participants landed significantly closer to the 
      box under the dss condition (difference: -23.28 [-20.73 to -25.81]%, p < 0.001). 
      Group mean LESS scores (difference: -0.01 [-0.59 to 0.57] error, p = 0.969) and 
      risk categorization (OR: 0.94 [0.47 to 1.88], p = 0.859) were similar between 
      conditions. However, individual-level risk categorization was inconsistent in 33% 
      of participants, as was the occurrence of specific errors. CONCLUSION: Using dss 
      during LESS might lead to different LESS errors and risk categorization at an 
      individual level compared to d50%. Given that individual LESS scores are of 
      primary interest in clinical and sport settings, and the injury-risk threshold 
      has not been validated for dss, the use of the original LESS protocol is 
      recommended. When only group mean LESS scores or proportions of at risk 
      individuals is of interest, using dss is possible to facilitate large cohort 
      testing.
CI  - (c) by the National Athletic Trainers' Association, Inc.
FAU - Hanzlikova, Ivana
AU  - Hanzlikova I
AD  - 1 Division of Health, Engineering, Computing and Science, Te Huataki Waiora 
      School of Health, University of Waikato, Adams Centre for High Performance, New 
      Zealand.
FAU - Hebert-Losier, Kim
AU  - Hebert-Losier K
AD  - 1 Division of Health, Engineering, Computing and Science, Te Huataki Waiora 
      School of Health, University of Waikato, Adams Centre for High Performance, New 
      Zealand.
LA  - eng
PT  - Journal Article
DEP - 20201105
PL  - United States
TA  - J Athl Train
JT  - Journal of athletic training
JID - 9301647
SB  - IM
OTO - NOTNLM
OT  - injury risk
OT  - jump-landing biomechanics
OT  - movement screen
EDAT- 2020/11/06 06:00
MHDA- 2020/11/06 06:00
CRDT- 2020/11/05 06:09
PHST- 2020/11/05 06:09 [entrez]
PHST- 2020/11/06 06:00 [pubmed]
PHST- 2020/11/06 06:00 [medline]
AID - 446997 [pii]
AID - 10.4085/68-20 [doi]
PST - aheadofprint
SO  - J Athl Train. 2020 Nov 5. doi: 10.4085/68-20.