Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes

# Background Knee function deficits may persist after anterior cruciate ligament reconstruction (ACLR). Return to sport (RTS) testing batteries assess recovery after ACLR and can guide RTS progression, but the ideal test components are debatable. The single leg vertical hop for height (SLVH) test u...

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Autores principales:	Michael J Zarro, Matthew G Stitzlein, Jason S Lee, Robert W Rowland, Vicki L Gray, Jeffrey B Taylor, Sean J Meredith, Jonathan D Packer, Christa M Nelson
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/f1287f4dc5364012a1a86d4c2bb22695
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spelling	oai:doaj.org-article:f1287f4dc5364012a1a86d4c2bb226952021-12-02T00:38:45ZSingle-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes2159-2896https://doaj.org/article/f1287f4dc5364012a1a86d4c2bb226952021-12-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/29595-single-leg-vertical-hop-test-detects-greater-limb-asymmetries-than-horizontal-hop-tests-after-anterior-cruciate-ligament-reconstruction-in-ncaa-divisi.pdfhttps://doaj.org/toc/2159-2896# Background Knee function deficits may persist after anterior cruciate ligament reconstruction (ACLR). Return to sport (RTS) testing batteries assess recovery after ACLR and can guide RTS progression, but the ideal test components are debatable. The single leg vertical hop for height (SLVH) test using a commercially available jump mat may provide a valuable assessment of knee function. # Hypothesis/Purpose The purpose of this study was to compare the limb symmetry index (LSI) of SLVH to horizontal hop testing in a cohort of National Collegiate Athletic Association (NCAA) Division 1 collegiate athletes after ACLR. The hypothesis was the SLVH would elicit significantly lower LSI than horizontal hop tests. # Study design Cross-Sectional Study # Methods Eighteen National Collegiate Athletic Association (NCAA) Division 1 collegiate athletes (7 males, 11 females) at 7.33 ± 2.05 months after ACLR were included in this retrospective study. LSI was calculated for single hop for distance (SHD), triple hop for distance (THD), cross-over hop for distance (CHD), timed 6-meter hop (T6H), and SLVH. A repeated measures ANOVA was performed to identify differences in LSI for each test. Spearman's Rho correlation coefficient was calculated to examine the relationship between LSIs for each test. # Results The LSI for SLVH (84.48% ± 11.41%) was significantly lower than LSI for SHD (95.48 ± 8.02%, p = 0.003), THD (94.40 ± 3.70%, p = 0.002), CHD (95.85 ± 7.00, p = 0.007), and T6H (97.69 ± 6.60%, p = 0.001). The correlation of LSI between SLVH and the horizontal hop tests was weak and non-significant for SHD (r~s~ = 0.166, p = 0.509), CHD (r~s~ = 0.199, p = 0.428), and T6H (r~s~ = 0.211, p = 0.401) and moderate and non-significant for THD (r~s~ = 0.405, p = 0.096). # Conclusions Individuals after ACLR had lower LSI on the SLVH than on horizontal hop tests and weak to moderate correlations between the tests suggest SLVH detects performance deficits not identified by the horizontal hop tests. # Level of evidence 3Michael J ZarroMatthew G StitzleinJason S LeeRobert W RowlandVicki L GrayJeffrey B TaylorSean J MeredithJonathan D PackerChrista M NelsonNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Michael J Zarro Matthew G Stitzlein Jason S Lee Robert W Rowland Vicki L Gray Jeffrey B Taylor Sean J Meredith Jonathan D Packer Christa M Nelson Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
description	# Background Knee function deficits may persist after anterior cruciate ligament reconstruction (ACLR). Return to sport (RTS) testing batteries assess recovery after ACLR and can guide RTS progression, but the ideal test components are debatable. The single leg vertical hop for height (SLVH) test using a commercially available jump mat may provide a valuable assessment of knee function. # Hypothesis/Purpose The purpose of this study was to compare the limb symmetry index (LSI) of SLVH to horizontal hop testing in a cohort of National Collegiate Athletic Association (NCAA) Division 1 collegiate athletes after ACLR. The hypothesis was the SLVH would elicit significantly lower LSI than horizontal hop tests. # Study design Cross-Sectional Study # Methods Eighteen National Collegiate Athletic Association (NCAA) Division 1 collegiate athletes (7 males, 11 females) at 7.33 ± 2.05 months after ACLR were included in this retrospective study. LSI was calculated for single hop for distance (SHD), triple hop for distance (THD), cross-over hop for distance (CHD), timed 6-meter hop (T6H), and SLVH. A repeated measures ANOVA was performed to identify differences in LSI for each test. Spearman's Rho correlation coefficient was calculated to examine the relationship between LSIs for each test. # Results The LSI for SLVH (84.48% ± 11.41%) was significantly lower than LSI for SHD (95.48 ± 8.02%, p = 0.003), THD (94.40 ± 3.70%, p = 0.002), CHD (95.85 ± 7.00, p = 0.007), and T6H (97.69 ± 6.60%, p = 0.001). The correlation of LSI between SLVH and the horizontal hop tests was weak and non-significant for SHD (r~s~ = 0.166, p = 0.509), CHD (r~s~ = 0.199, p = 0.428), and T6H (r~s~ = 0.211, p = 0.401) and moderate and non-significant for THD (r~s~ = 0.405, p = 0.096). # Conclusions Individuals after ACLR had lower LSI on the SLVH than on horizontal hop tests and weak to moderate correlations between the tests suggest SLVH detects performance deficits not identified by the horizontal hop tests. # Level of evidence 3
format	article
author	Michael J Zarro Matthew G Stitzlein Jason S Lee Robert W Rowland Vicki L Gray Jeffrey B Taylor Sean J Meredith Jonathan D Packer Christa M Nelson
author_facet	Michael J Zarro Matthew G Stitzlein Jason S Lee Robert W Rowland Vicki L Gray Jeffrey B Taylor Sean J Meredith Jonathan D Packer Christa M Nelson
author_sort	Michael J Zarro
title	Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
title_short	Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
title_full	Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
title_fullStr	Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
title_full_unstemmed	Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes
title_sort	single-leg vertical hop test detects greater limb asymmetries than horizontal hop tests after anterior cruciate ligament reconstruction in ncaa division 1 collegiate athletes
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/f1287f4dc5364012a1a86d4c2bb22695
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Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate Athletes

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