1
|
Wu CK, Lin YC, Chen YL, Chao YP, Hsieh TH. The Influence of Dynamic Taping on Landing Biomechanics after Fatigue in Young Football Athletes: A Randomized, Sham-Controlled Crossover Trial. Bioengineering (Basel) 2024; 11:631. [PMID: 38927867 PMCID: PMC11200620 DOI: 10.3390/bioengineering11060631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/06/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Fatigue is believed to increase the risk of anterior cruciate ligament (ACL) injury by directly promoting high-risk biomechanics in the lower limbs. Studies have shown that dynamic taping can help normalize inadequate biomechanics during landings. This study aims to examine the effects of dynamic taping on landing biomechanics in fatigued football athletes. Twenty-seven high-school football athletes were recruited and randomly allocated to groups of either active taping or sham taping, with a crossover allocation two weeks later. In each group, the participants underwent a functional agility short-term fatigue protocol and were evaluated using the landing error scoring system before and after the fatigue protocol. The landing error scoring system (LESS) scores in the sham taping group increased from 4.24 ± 1.83 to 5.36 ± 2.00 (t = -2.07, p = 0.04, effect size = 0.61). In contrast, the pre-post difference did not reach statistical significance in the active taping group (from 4.24 ± 1.69 to 4.52 ± 1.69, t = -1.50, p = 0.15, effect size 0.46). Furthermore, the pre-post changes between the sham and active taping groups were statistically significant (sham taping: 1.12 ± 1.20; active taping: 0.28 ± 0.94, p = 0.007). Dynamic taping, particularly using the spiral technique, appeared to mitigate faulty landing biomechanics in the fatigued athletes by reducing hip and knee flexion and increasing hip internal rotation during landing. These results suggest that dynamic taping can potentially offer protective benefits in landing mechanics, which could further be applied to prevent ACL injuries in fatigued athletes.
Collapse
Affiliation(s)
- Chih-Kuan Wu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan; (C.-K.W.); (Y.-C.L.)
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
- School of Physical Therapy and Graduate Institute of Rehabilitation Science, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yin-Chou Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan; (C.-K.W.); (Y.-C.L.)
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
- Department of Health Management and Enhancement, Open University of Kaohsiung, Kaohsiung 81249, Taiwan
| | - Ya-Lin Chen
- Department of Athletic Training & Health, National Taiwan Sport University, Taoyuan 33301, Taiwan;
| | - Yi-Ping Chao
- Department of Computer Science and Information Engineering, Chang Gung University, Taoyuan 33302, Taiwan;
| | - Tsung-Hsun Hsieh
- School of Physical Therapy and Graduate Institute of Rehabilitation Science, Chang Gung University, Taoyuan 33302, Taiwan
- Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
- Healthy Aging Research Center, Chang Gung University, Taoyuan 33305, Taiwan
| |
Collapse
|
2
|
Strutzenberger G, David S, Borcard LM, Fröhlich S, Imhoff FB, Scherr J, Spörri J. Breaking new grounds in injury risk screening in soccer by deploying unsupervised learning with a special focus on sex and fatigue effects. Sports Biomech 2022:1-17. [PMID: 36004395 DOI: 10.1080/14763141.2022.2112748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
In injury prevention, a vertical drop jump (DJ) is often used for screening athletes at risk for injury; however, the large variation in individual movement patterns might mask potentially relevant strategies when analysed on a group-based level. Two movement strategies are commonly discussed as predisposing athletes to ACL injuries: a deficient leg axis and increased leg stiffness during landing. This study investigated the individual movement pattern of 39 female and male competitive soccer players performing DJs at rest and after being fatigued. The joint angles were used to train a Kohonen self-organising map. Out of 19,596 input vectors, the SOM identified 700 unique postures. Visualising the movement trajectories and adding the latent parameters contact time, medial knee displacement (MKD) and knee abduction moment allow identification of zones with presumably increased injury risk and whether the individual movement patterns pass these zones. This information can be used, e.g., for individual screening and for feedback purposes. Additionally, an athlete's reaction to fatigue can be explored by comparing the rested and fatigued movement trajectories. The results highlight the ability of unsupervised learning to visualise movement patterns and to give further insight into an individual athlete's status without the necessity of a priori assumptions.
Collapse
Affiliation(s)
- Gerda Strutzenberger
- Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Department of Orthopaedics, Balgrist University Hospital, University Centre for Prevention and Sports Medicine, University of Zurich, Zurich, Switzerland
- Motion Analysis Zurich, Department of Orthopaedics, Balgrist University Hospital, Children's Hospital, University of Zurich, Zurich, Switzerland
- UMIT Tirol, Psychology and Medical Sciences, Research Unit Sports Medicine, Innsbruck, Hall in Tirol, Austria
| | - Sina David
- Department of Human Movement Sciences, Vrije Universiteit Amsterdam, HV Amsterdam, The Netherlands
| | - Lana Mei Borcard
- Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Stefan Fröhlich
- Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Department of Orthopaedics, Balgrist University Hospital, University Centre for Prevention and Sports Medicine, University of Zurich, Zurich, Switzerland
| | - Florian B Imhoff
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Johannes Scherr
- Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Department of Orthopaedics, Balgrist University Hospital, University Centre for Prevention and Sports Medicine, University of Zurich, Zurich, Switzerland
- Motion Analysis Zurich, Department of Orthopaedics, Balgrist University Hospital, Children's Hospital, University of Zurich, Zurich, Switzerland
| | - Jörg Spörri
- Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Department of Orthopaedics, Balgrist University Hospital, University Centre for Prevention and Sports Medicine, University of Zurich, Zurich, Switzerland
- Motion Analysis Zurich, Department of Orthopaedics, Balgrist University Hospital, Children's Hospital, University of Zurich, Zurich, Switzerland
| |
Collapse
|
3
|
de Vasconcelos DP, Aidar FJ, Lima TB, Filho FMDN, Mendonça ILA, Díaz-de-Durana AL, Garrido ND, Santiago MS, Junior WMDS. Assessment of Dynamic Knee Valgus between Lateral Step-Down Test and Running in Female Runners with and without Patellofemoral Pain Using Two-Dimensional Video Analysis. Clin Pract 2022; 12:425-435. [PMID: 35735666 PMCID: PMC9221657 DOI: 10.3390/clinpract12030047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
Dynamic knee valgus (DKV) is a frontal plane knee kinematic alteration that has been associated with patellofemoral pain (PFP) in female runners. DKV is commonly assessed in clinical practice by measuring frontal plane knee projection angle (FPPA) during squat tests. However, it remains unclear whether the DKV observed in these tests is similar to or correlates with that observed during running in female runners. The aims of this cross-sectional study were to correlate and compare DKV, by measuring FPPA values, in a lateral step-down (LSD) squat test and running in female runners with and without PFP. A two-dimensional (2D) video analysis of the LSD test and running was carried out for 21 asymptomatic female runners and 17 PFP female runners in order to determine FPPA values. A Pearson correlation test and a factorial ANOVA with Bonferroni post hoc correction were used for statistical analysis. The FPPAs recorded in the LSD test were significantly higher than those recorded during running in the asymptomatic (16.32° ± 5.38 vs. 4.02° ± 3.26, p < 0.01) and PFP groups (17.54° ± 7.25 vs. 4.64° ± 3.62, p < 0.01). No significant differences were found in FPPA values between asymptomatic and PFP runners during the LSD test (16.32° ± 5.38 vs. 17.54° ± 7.25, p = 0.55) and running (4.02° ± 3.26 vs. 4.64° ± 3.62, p = 0.58). There was a small (r < 0.3) and non-significant (p > 0.05) correlation in FPPAs between the LSD test and running in both groups. According to our results, DKV was not similar during the LSD test and running, and there was no significant correlation in FPPA values between the LSD test and running in both groups. Therefore, clinicians and therapists should be aware of these findings when using the LSD test in clinical practice to evaluate DKV in female runners with or without PFP.
Collapse
Affiliation(s)
- Diego Protasio de Vasconcelos
- Postgraduate Program of Physical Education, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil;
- Musculoskeletal System Unit, University Hospital, Federal University of Sergipe (UFS), Aracaju 49060-025, Brazil;
- Correspondence: (D.P.d.V.); (F.J.A.)
| | - Felipe J. Aidar
- Postgraduate Program of Physical Education, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil;
- Correspondence: (D.P.d.V.); (F.J.A.)
| | - Tarcisio Brandao Lima
- Postgraduate Program of Health Sciences, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil; (T.B.L.); (F.M.d.N.F.)
| | | | | | - Alfonso López Díaz-de-Durana
- Sports Department, Physical Activity and Sports Faculty-INEF, Universidad Politécnica de Madrid, 28040 Madrid, Spain;
| | - Nuno Domingos Garrido
- Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal;
| | - Michael Silveira Santiago
- Musculoskeletal System Unit, University Hospital, Federal University of Sergipe (UFS), Aracaju 49060-025, Brazil;
| | - Walderi Monteiro da Silva Junior
- Postgraduate Program of Physical Education, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil;
- Department of Physical Therapy, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil;
| |
Collapse
|
4
|
Skouras AZ, Kanellopoulos AK, Stasi S, Triantafyllou A, Koulouvaris P, Papagiannis G, Papathanasiou G. Clinical Significance of the Static and Dynamic Q-angle. Cureus 2022; 14:e24911. [PMID: 35698708 PMCID: PMC9186474 DOI: 10.7759/cureus.24911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Q-angle represents the resultant force vector of the quadriceps and patellar tendons acting on the patella. An increased Q-angle has been considered a risk factor for many disorders and injuries. This literature review challenges the clinical value of static Q-angle and recommends a more dynamic movement evaluation for making clinical decisions. Although there are many articles about static Q-angle, few have assessed the value of dynamic Q-angle. We searched Scopus and PubMed (until September 2021) to identify and summarize English-language articles evaluating static and dynamic Q-angle, including articles for dynamic knee valgus (DKV) and frontal plane projection angle. We also used textbooks and articles from references to related articles. Although static Q-angle measurement is used systematically in clinical practice for critical clinical decisions, its interpretation and clinical translation present fundamental and intractable limitations. To date, it is acceptable that mechanisms that cause patellofemoral pain and athletic injuries have a stronger correlation with dynamic loading conditions. Dynamic Q-angle has the following three dynamic elements: frontal plane (hip adduction, knee abduction), transverse plane (hip internal rotation and tibia external rotation), and patella behavior. Measuring one out of three elements (frontal plane) illustrates only one-third of this concept. Static Q-angle lacks biomechanical meaning and utility for dynamic activities. Although DKV is accompanied by hip and tibia rotation, it remains a frontal plane measurement, which provides no information about the transverse plane and patella movement. However, given the acceptable reliability and the better differentiation capability, DKV assessment is recommended in clinical practice.
Collapse
Affiliation(s)
- Apostolos Z Skouras
- Sports Excellence, 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
- Biomechanics and Gait Analysis Laboratory "Sylvia Ioannou", Orthopaedic Research and Education Center "P.N.Soukakos", 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
| | | | - Sophia Stasi
- Laboratory of Neuromucsular and Cardiovascular Study of Motion (LANECASM), University of West Attica, Athens, GRC
- Department of Physiotherapy, University of West Attica, Athens, GRC
| | - Athanasios Triantafyllou
- Biomechanics and Gait Analysis Laboratory "Sylvia Ioannou", Orthopaedic Research and Education Center "P.N.Soukakos", 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
- Laboratory of Neuromucsular and Cardiovascular Study of Motion (LANECASM), University of West Attica, Athens, GRC
| | - Panagiotis Koulouvaris
- Sports Excellence, 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
- Biomechanics and Gait Analysis Laboratory "Sylvia Ioannou", Orthopaedic Research and Education Center "P.N.Soukakos", 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
| | - Georgios Papagiannis
- Laboratory of Neuromucsular and Cardiovascular Study of Motion (LANECASM), University of West Attica, Athens, GRC
- Department of Physiotherapy, University of the Peloponnese, Sparta, GRC
- Biomechanics and Gait Analysis Laboratory "Sylvia Ioannou", Orthopaedic Research and Education Center "P.N.Soukakos", 1st Department of Orthopaedic Surgery, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
| | - George Papathanasiou
- Laboratory of Neuromucsular and Cardiovascular Study of Motion (LANECASM), University of West Attica, Athens, GRC
- Department of Physiotherapy, University of West Attica, Athens, GRC
| |
Collapse
|
5
|
Khalil LS, Lindsay-Rivera KG, Abbas MJ, Shah S, Tandron M, Ferris A, Okoroha KR. Game Utilization and Performance Following RTP From ACL Reconstruction Does not Influence a Subsequent Second ACL Injury in National Football League Players. Arthrosc Sports Med Rehabil 2021; 3:e1377-e1385. [PMID: 34746844 PMCID: PMC8551403 DOI: 10.1016/j.asmr.2021.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 07/05/2021] [Indexed: 11/16/2022] Open
Abstract
Purpose The purpose of this study is to evaluate differences in game utilization or performance following primary anterior cruciate ligament (ACL) reconstruction between National Football League (NFL) players with and without a second ACL injury. Methods NFL players who underwent ACL reconstruction between 2013 and 2017 were identified. Players were classified as having one injury (“tear”) or having later sustained a subsequent second (reinjury or contralateral) ACL injury (“retear”). Players were excluded if they tore their ACL prior to the NFL, did not return to play (RTP), did not play the season before injury, or had concomitant injuries. Demographic characteristics, game utilization statistics, and season approximate value (SAV) performance metrics were recorded. Statistical analysis compared data after RTP from primary ACL reconstruction (seasons +1, +2, and +3) relative to the season before injury (season −1) between cohorts using mean differences and relative percentages. Results Analysis included a total of 45 players, 32 in the “tear” group and 13 in the “retear” group. Demographics, level of play, and time to RTP after primary ACL reconstruction did not differ between the groups (P > .05). Tear and retear groups demonstrated similar utilization and performance metrics the season prior to injury (−1) and the 3 seasons following RTP (season of injury is “0”). Both groups had a similar decrease (relative percentage) in games played and started, snap counts, and SAV during the 3 seasons following RTP compared to baseline (P > .05). The draft pick position was correlated with the relative percentage of games started the first season after RTP (r = .6, P = .02). Conclusions Game utilization and performance metrics following ACL reconstruction were not associated with a subsequent second ACL injury. Players with a higher draft pick position were more likely to return to the starting lineup following primary ACL reconstruction. Ultimately, player game utilization and performance following primary ACL reconstruction is not predictive of a subsequent second ACL injury. Level of Evidence Level III, retrospective case-control study
Collapse
Affiliation(s)
- Lafi S Khalil
- Henry Ford Hospital, Department of Orthopaedic Surgery, Detroit, Michigan, U.S.A
| | | | - Muhammad J Abbas
- Henry Ford Hospital, Department of Orthopaedic Surgery, Detroit, Michigan, U.S.A
| | - Sabin Shah
- Henry Ford Hospital, Department of Orthopaedic Surgery, Detroit, Michigan, U.S.A
| | - Marissa Tandron
- Wayne State University, School of Medicine, Detroit, Michigan, U.S.A
| | - Albert Ferris
- Wayne State University, School of Medicine, Detroit, Michigan, U.S.A
| | - Kelechi R Okoroha
- Mayo Clinic, Department of Orthopedic Surgery, Minneapolis, Minnesota, U.S.A
| |
Collapse
|
6
|
Carvalho CAM, Guirelli AR, Maria Dos Santos J, Felicio LR. Reliability of 2D kinematics during landing of volleyball athletes after exhaustion. J Bodyw Mov Ther 2021; 27:579-583. [PMID: 34391290 DOI: 10.1016/j.jbmt.2021.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/17/2021] [Accepted: 05/13/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION It is possible to quantify changes in movement patterns through kinematic analysis of landing, especially to quantify changes in pre and post exhaustion situations, however the reliability of this post exhaustion analysis is not known. OBJECTIVE To verify the inter and intra-examiner reliability of two-dimensional kinematic analysis during the landing of a vertical jump of volleyball athletes, pre and post exhaustion protocol. EXPERIMENTAL Thirty volleyball athletes were recruited, and kinematic analysis was performed during landing, pre and post exhaustion protocol. The angular measurements analyzed were: 1) frontal plane: knee valgus and 2) sagittal plane: anterior trunk inclination, knee flexion and tibiotarsal angle, performed by two examiners. The reliability calculation used the intraclass correlation coefficient (ICC), in addition to the error of measurement (SEM), the coefficient of variation (CV) and the minimum detectable difference (MDD). RESULTS Regarding reliability: ICC = 0.95-0.98 (pre) and ICC = 0.83-0.98 (post exhaustion). The CV presented heterogeneous values for the knee valgus and the inclination of the trunk, both pre and post protocol. The SEM from all angles presented values that varied from 0.74°-2.33° and the MDD ranged from 2.55°-5.54° pre protocol and 2.05°-6.45° post protocol. CONCLUSION 2D kinematic evaluation can be used during landing, before and after the application of an exhaustion protocol, but professionals should pay attention to the angles of the knee valgus and the inclination of the trunk, as they have a large CV.
Collapse
Affiliation(s)
- Caio Augusto M Carvalho
- Student at the Post-Graduate Program in Physiotherapy UFTM/ UFU, Federal University of Uberlândia, Minas Gerais, Brazil
| | - Agnes R Guirelli
- Student at the Post-Graduate Program in Physiotherapy UFTM/ UFU, Federal University of Uberlândia, Minas Gerais, Brazil
| | - Júlia Maria Dos Santos
- Professor at the Physiotherapy Course - UFU, Federal University of Uberlândia, Minas Gerais, Brazil
| | - Lilian Ramiro Felicio
- Professor at the Physiotherapy Course - UFU, Federal University of Uberlândia, Minas Gerais, Brazil; Professor at the Post-Graduate Program in Physiotherapy UFTM/ UFU, Federal University of Uberlândia, Minas Gerais, Brazil.
| |
Collapse
|
7
|
Tallard JC, Hedt C, Lambert BS, McCulloch PC. The Role of Fatigue in Return to Sport Testing Following Anterior Cruciate Ligament Reconstruction. Int J Sports Phys Ther 2021; 16:1043-1051. [PMID: 34386283 PMCID: PMC8329315 DOI: 10.26603/001c.25687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 05/20/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Fatigue may play a role in anterior cruciate ligament (ACL) injury, but has not been incorporated into objective test batteries for return to sport decisions following ACL reconstruction (ACLR) surgery. The effect of fatigue on muscle function and performance following surgery and rehabilitation has been poorly studied. PURPOSE/HYPOTHESIS The purpose of this study was to assess the effect of fatigue on performance of various hop tests used in clinical rehabilitation settings by examining LSI scores. The authors hypothesized that participants will have worse limb symmetry index scores following the fatigue protocol and that the operative limb (ACLR) will have a greater decline in function than the non-operative limb (CON). STUDY DESIGN Cross-Sectional Study. METHODS Participants (n=21 [Male = 15, Female = 6]; AGE = 24.6 ± 9.3) were at least six months post ACLR and in rehabilitation. Testing was performed over two separate sessions in either a non-fatigued (NFS) or fatigued state (FS). In the FS, individuals performed a series of exercises to exhaust muscular endurance, strength, and power systems, after which they performed as battery of seven hop tests (single hop for distance, triple hop for distance, crossover hop for distance, 6-meter timed hop, lateral rotation hop for distance, medial rotation hop for distance, and vertical jump for height). A 2(limb) x 2(time) ANOVA was used to compare limbs between each state. RESULTS Differences between limbs (CON vs ACLR) were observed for all hop tests in the NFS whereby the ACLR limb was observed to have reduced performance (↓5.4-9.1%, p <0.05). When tested in the FS, significant differences in performance between limbs remained for only the crossover (↓4.9%), medial rotation (↓7.1%), lateral rotation (↓5.5%), and vertical hop (↓10.0%)(p<0.05). When comparing the NFS and FS states, only the CON limb was observed to have significant decreases in performance of the Triple Hop (↓7.4%), Crossover (↓8.7%), and Lateral Rotation (↓5.2%)(p<0.05). CONCLUSIONS Following ACL reconstruction, there appears to be a greater loss in jump performance in the CON limb in the FS. These findings suggest it may be crucial to consider and assess the endurance of both limbs rather than just the ACLR limb when determining readiness for return to play. LEVEL OF EVIDENCE Level 3.
Collapse
|
8
|
García-Luna MA, Cortell-Tormo JM, García-Jaén M, Ortega-Navarro M, Tortosa-Martínez J. Acute Effects of ACL Injury-Prevention Warm-Up and Soccer-Specific Fatigue Protocol on Dynamic Knee Valgus in Youth Male Soccer Players. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17155608. [PMID: 32759692 PMCID: PMC7432391 DOI: 10.3390/ijerph17155608] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/19/2022]
Abstract
Childhood anterior cruciate ligament (ACL) injuries—which can pose a major risk to a child’s sporting career—have been on the rise in the last few decades. Dynamic knee valgus (DKV) has been linked to an increased risk of ACL injury. Therefore, the aim of this study was to analyze the acute effects of an ACL injury prevention protocol (ACL-IPP) and a soccer-specific fatigue protocol (SSFP) on DKV in youth male soccer players. The research hypothesis was that DKV would be reduced by the ACL-IPP and increased by the SSFP. Eighteen youth male soccer players were divided according to baseline DKV. Those with moderate or large DKV performed a neuromuscular training protocol based on activation of the abductor and external rotator hip muscles. Those with little or no DKV performed a soccer-specific fatigue protocol. DKV was assessed using the single-leg squat pre- and post-protocols in both legs. The ACL-IPP significantly decreased DKV during single-leg squat (p < 0.01, effect size = 1.39), while the SSFP significantly increased baseline DKV in the dominant leg during single-leg squat (p = 0.012; effect size = 1.74). In conclusion, the ACL-IPP appears to acutely reduce the DKV in youth male soccer players, and the SSFP seems to acutely increase the DKV in those players who showed a light or no DKV in a non-fatigue situation. By using the SSFP, it may be possible to determine which players would benefit from injury prevention programs due to increased DKV during game scenarios, while hip abductor and external rotator neuromuscular training may be beneficial for players who have moderate and severe DKV during single-leg squat under non-fatigued scenarios.
Collapse
|
9
|
Hunnicutt JL, Jayanthi NA, Labib SA. Editorial Commentary: Considering Fatigue When Assessing Athletes for Dynamic Knee Valgus: Is This the Next Big Step in Identifying Anterior Cruciate Ligament Injury Risk? Arthroscopy 2020; 36:223-224. [PMID: 31864580 DOI: 10.1016/j.arthro.2019.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 02/02/2023]
Abstract
Excessive dynamic knee valgus during jumping is a poor movement strategy that has been well-documented as a risk factor for anterior cruciate ligament injury. Yet, there has been little progress in the translation of findings from high-tech motion capture laboratories to clinically applicable settings. One barrier to widespread use is expensive technology that requires time; therefore, field-based efficient assessment tools that can be used by several types of clinicians are desperately needed. Further, fatigue can influence dynamic knee valgus and should be considered when assessing or conditioning athletes.
Collapse
|