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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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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North American Sports Medicine Institute
2021-12-01
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| Series: | International Journal of Sports Physical Therapy |
| Online Access: | https://doi.org/10.26603/001c.29595 |
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| _version_ | 1825196978086084608 |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-f1287f4dc5364012a1a86d4c2bb22695 |
| institution | Kabale University |
| issn | 2159-2896 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | North American Sports Medicine Institute |
| record_format | Article |
| series | International Journal of Sports Physical Therapy |
| spelling | doaj-art-f1287f4dc5364012a1a86d4c2bb226952025-02-11T20:28:27ZengNorth American Sports Medicine InstituteInternational Journal of Sports Physical Therapy2159-28962021-12-01166Single-Leg Vertical Hop Test Detects Greater Limb Asymmetries Than Horizontal Hop Tests After Anterior Cruciate Ligament Reconstruction in NCAA Division 1 Collegiate AthletesMichael J ZarroMatthew G StitzleinJason S LeeRobert W RowlandVicki L GrayJeffrey B TaylorSean J MeredithJonathan D PackerChrista M Nelson# 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 3https://doi.org/10.26603/001c.29595 |
| spellingShingle | 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 International Journal of Sports Physical Therapy |
| 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_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_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_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 |
| url | https://doi.org/10.26603/001c.29595 |
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