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Cannon J, Kulig K, Weber AE, Powers CM. Gluteal activation during squatting reduces acetabular contact pressure in persons with femoroacetabular impingement syndrome: A patient-specific finite element analysis. Clin Biomech (Bristol, Avon) 2023; 101:105849. [PMID: 36549048 DOI: 10.1016/j.clinbiomech.2022.105849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022]
Abstract
BACKGROUND Femoroacetabular impingement syndrome is a motion-related clinical disorder resulting from abnormal hip joint morphology. Mechanical impingement, in which the aspherical femoral head (cam morphology) abuts with the acetabular rim, is created with simultaneous hip flexion, internal rotation, and adduction. Impaired function of the gluteal muscles may be contributory to femoroacetabular impingement syndrome progression. The purpose of this study was to assess the influence of gluteal muscle recruitment on acetabular contact pressure during squatting in persons with cam femoroacetabular impingement syndrome. METHODS Eight individuals (4 males, 4 females) with a diagnosis of cam femoroacetabular impingement syndrome underwent CT imaging of the pelvis and proximal femora, and a biomechanical assessment of squatting (kinematics, kinetics, and electromyography). Two maximal depth bodyweight squat conditions were evaluated: 1) non-cued squatting; and 2) cued gluteal activation squatting. Utilizing subject-specific electromyography-driven hip and finite element modeling approaches, hip muscle activation, kinematics, bone-on-bone contact forces, and peak acetabular contact pressure were compared between squat conditions. FINDINGS Modest increases in gluteus maximus (7% MVIC, P < 0.0001) and medius (6% MVIC, P = 0.009) activation were able to reduce hip internal rotation on average 5° (P = 0.024), and in doing so reduced acetabular contact pressure by 32% (P = 0.023). Reductions in acetabular contact pressure occurred despite no change in hip abduction and increased bone-on-bone contact forces occurring in the cued gluteal activation condition. INTERPRETATION Our findings highlight the importance of gluteal activation in minimizing mechanical impingement and provide a foundation for interventions aimed at preventing the development and progression of femoroacetabular impingement syndrome.
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Affiliation(s)
- Jordan Cannon
- Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA; Comparative Neuromuscular Biomechanics Laboratory, Department of Integrative Anatomical Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Kornelia Kulig
- Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA
| | - Alexander E Weber
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Christopher M Powers
- Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA.
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Isolated Gluteus Maximus Tear of a Middle-Aged Fitness Coach; A Case Report. TRAUMA CARE 2022. [DOI: 10.3390/traumacare2030038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Injuries of the hip extensors are not uncommon, with those of the hamstrings being frequent among athletes. On the contrary, isolated injuries of the gluteus maximus muscle have been barely reported in the literature. Case Report: We present a case of a 63-year-old male water aerobics trainer with an acute tear of the right gluteus maximus tendon and describe the clinical presentation, imaging studies, surgical treatment, and functional outcome one year after surgery.
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Paravlic AH, Segula J, Drole K, Hadzic V, Pajek M, Vodicar J. Tissue Flossing Around the Thigh Does Not Provide Acute Enhancement of Neuromuscular Function. Front Physiol 2022; 13:870498. [PMID: 35574482 PMCID: PMC9091176 DOI: 10.3389/fphys.2022.870498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/28/2022] [Indexed: 11/23/2022] Open
Abstract
Nowadays, various methods are used for acute performance enhancement. The most recent of these is tissue flossing, which is becoming increasingly popular for both performance enhancement and rehabilitation. However, the effects of flossing on athletic performance have not been clearly demonstrated, which could be due to differences in the methodology used. In particular, the rest periods between the end of the preconditioning activity and the performance of the criterion task or assessment tools varied considerably in the published literature. Therefore, the present study aimed to investigate the effects of applying tissue flossing to the thigh on bilateral countermovement jump performance and contractile properties of vastus lateralis (VL) muscle. Nineteen recreational athletes (11 males; aged 23.1 ± 2.7 years) were randomly assigned to days of flossing application (3 sets for 2 min of flossing with 2 min rest between sets) with preset experimental pressure (EXP = 95 ± 17.4 mmHg) or control condition (CON = 18.9 ± 3.5 mmHg). The first part of the measurements was performed before and after warm-up consisting of 5 min of cycling followed by dynamic stretching and specific jumping exercises, while the second part consisted of six measurement points after flossing application (0.5, 3, 6, 9, 12, 15 min). The warm-up improved muscle response time (VL = -5%), contraction time (VL = -3.6%) muscle stiffness (VL = 17.5%), contraction velocity (VL = 23.5%), jump height (13.9%) and average power (10.5%). On the contrary, sustain time, half-relaxation time and take-off velocity stayed unaltered. Flossing, however, showed negative effects for muscle response time (F = 18.547, p < 0.001), contraction time (F = 14.899, p < 0.001), muscle stiffness (F = 8.365, p < 0.001), contraction velocity (F = 11.180, p < 0.001), jump height (F = 14.888, p < 0.001) and average power (F = 13.488, p < 0.001), whereas sustain time, half-relaxation time and take-off velocity were unaffected until the end of the study protocol regardless of condition assigned and/or time points of the assessment. It was found that the warm-up routine potentiated neuromuscular function, whereas the flossing protocol used in the current study resulted in fatigue rather than potentiation. Therefore, future studies aimed to investigate the dose-response relationship of different configurations of preconditioning activities on neuromuscular function are warranted.
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Affiliation(s)
- Armin H. Paravlic
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
- Science and Research Centre Koper, Institute for Kinesiology Research, Koper, Slovenia
- Faculty of Sports Studies, Masaryk University, Brno, Czechia
| | - Jure Segula
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Kristina Drole
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Vedran Hadzic
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Maja Pajek
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Janez Vodicar
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
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Paravlic AH, Simunic B, Pisot S, Kleva M, Teraz K, Vogrin M, Marusic U, Pisot R. Lower-Limb Muscle Contractile Properties, Explosive Power and the Subjective Response of Elite Soccer Players to the COVID-19 Lockdown. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19010474. [PMID: 35010734 PMCID: PMC8744705 DOI: 10.3390/ijerph19010474] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 01/27/2023]
Abstract
The present study examined the effects of the lockdown period on basic anthropometric measures, countermovement jumping performance, skeletal muscle contractile properties derived from tensiomyography (TMG), injury incidence, and self-assessed general well-being in elite soccer players. A total of 266 players were assessed before (PRE) and 32 players were reassessed 11 days after (POST) the COVID-19 period. Significant changes in the TMG parameters were observed POST compared to PRE: contraction time (Tc) increased from 6% to 50% in vastus lateralis [VL] (p = 0.009) and biceps femoris [BF] (p < 0.001), respectively; whereas radial displacement (Dm) increased for 19% in BF (p = 0.036) and 17% in VL (p < 0.001), respectively. Jumping performance remained unchanged from PRE to POST In addition, athletes rated the lockdown period as a positive event and felt psychologically better during the lockdown, primarily because they spent more time with family members and friends. Although there were no differences in any of the variables describing lower limb muscle power following the two-month lockdown, the altered contractile properties of the assessed muscles suggest suboptimal conditioning of the football players.
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Affiliation(s)
- Armin H. Paravlic
- Faculty of Sport, Institute of Kinesiology, University of Ljubljana, 1000 Ljubljana, Slovenia
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
- Faculty of Sports Studies, Masaryk University, 625 00 Brno, Czech Republic
- Correspondence:
| | - Bostjan Simunic
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
| | - Sasa Pisot
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
| | - Matej Kleva
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
| | - Kaja Teraz
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
| | - Matjaz Vogrin
- Faculty of Medicine, Institute of Sports Medicine, University of Maribor, 2000 Maribor, Slovenia;
| | - Uros Marusic
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
- Department of Health Science, Alma Mater Europaea—ECM, 2000 Maribor, Slovenia
| | - Rado Pisot
- Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia; (B.S.); (S.P.); (M.K.); (K.T.); (U.M.); (R.P.)
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Martín-San Agustín R, Benítez-Martínez JC, Medina-Mirapeix F, Casaña-Granell J. Sex Differences and Patterns of Muscle Stiffness in the Knee Flexor and Extensor Musculature Through Analysis of Isolated Bellies. J Strength Cond Res 2021; 35:1044-1049. [PMID: 30273285 DOI: 10.1519/jsc.0000000000002883] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
ABSTRACT Martín-San Agustín, R, Benítez-Martínez, JC, Medina-Mirapeix, F, and Casaña-Granell, J. Sex differences and patterns of muscle stiffness in the knee flexor and extensor musculature through analysis of isolated bellies. J Strength Cond Res 35(4): 1044-1049, 2021-Muscle stiffness (MS) is one of the key factors in joint control. The purpose of this study was to determine sex differences in the MS of 5 isolated muscle bellies (biceps femoris [BF], semitendinosus [ST], rectus femoris [RF], vastus medialis [VM], and vastus lateralis [VL]) and in the pattern of differences among their respective MS. Twenty female and 20 male recreational athletes participated. Muscle stiffness was measured by tensiomyography using maximum radial deformation (Dm) as an indirect indicator of MS. Sex differences were observed only in the Dm of RF (mean difference = 2.07 mm, p < 0.05) when values were adjusted by body mass and stature. Males and females showed a similar pattern in the Dm between the muscle bellies: within the hamstrings, ST had a significantly higher Dm than BF in females (3.02 mm) and males (4.28 mm); within the quadriceps, RF also had a significantly higher value than VL and VM in females (6.50 and 7.38 mm, respectively) and males (4.87 and 4.82 mm, respectively). Sex differences in patterns were found between BF and the vastus muscles: the BF of females had a significantly higher Dm than VL (3.78 mm) and VM (4.51 mm), but this was not observed in males. Differences may imply different involvement of the bellies in countering the movements of the lower extremities. Our results can help to direct exercises to improve the MS in certain muscular bellies.
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Normative data and correlation between dynamic knee valgus and neuromuscular response among healthy active males: a cross-sectional study. Sci Rep 2020; 10:17206. [PMID: 33268811 PMCID: PMC7710730 DOI: 10.1038/s41598-020-74177-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023] Open
Abstract
The dynamic knee valgus (DKV) during different sport maneuvers has been widely described as risk factor to develop an anterior cruciate ligament injury. Hip and knee muscles seem to have a crucial role to prevent the dynamic knee valgus. This study aimed to give normative and correlational data about DKV and hip and knee neuromuscular response (NMR) among healthy active males. The hypothesis is that DKV could be correlated with hip NMR. A cross-sectional correlational study. Research Anatomy Laboratory. The study was carried out among 50 active, non-injured males. Dynamic Knee-Valgus angle and lower limb posterior chain muscles Neuromuscular Response. DKV was measured using Kinovea software during a Single-Legged Drop Jump test and NMR was measured using tensiomyography and myotonometry for gluteus maximum, biceps femoris, semitendinosus, lateral and medial gastrocnemius. Right and left limbs were both performed and analyzed independently. No significant correlation was observed between DKV and hip and knee muscles NMR. This study shows normative and correlational data about dynamic knee valgus, tensiomyography and myotonometry for healthy and active males. The DKV control seems to be non-correlated with isolated hip and knee muscles NMR so this suggests it is more about Central Nervous System activity than about isolated muscles NMR.
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Cannon J, Weber AE, Park S, Mayer EN, Powers CM. Pathomechanics Underlying Femoroacetabular Impingement Syndrome: Theoretical Framework to Inform Clinical Practice. Phys Ther 2020; 100:788-797. [PMID: 31899497 DOI: 10.1093/ptj/pzz189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/16/2019] [Accepted: 10/20/2019] [Indexed: 02/06/2023]
Abstract
Over the last decade, there has been a marked increase in attention to, and interest in, femoroacetabular impingement syndrome (FAIS). Despite continued efforts by researchers and clinicians, the development, progression, and appropriate treatment of FAIS remains unclear. While research across various disciplines has provided informative work in various areas related to FAIS, the underlying pathomechanics, time history, and interaction between known risk factors and symptoms remain poorly understood. The purpose of this perspective is to propose a theoretical framework that describes a potential pathway for the development and progression of FAIS. This paper aims to integrate relevant knowledge and understanding from the growing literature related to FAIS to provide a perspective that can inform future research and intervention efforts.
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Affiliation(s)
- Jordan Cannon
- Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California
| | - Alexander E Weber
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California
| | - Seol Park
- Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California
| | - Erik N Mayer
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California
| | - Christopher M Powers
- Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 East Alcazar St, CHP-155, Los Angeles, CA (USA)
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Lohr C, Schmidt T, Medina-Porqueres I, Braumann KM, Reer R, Porthun J. Diagnostic accuracy, validity, and reliability of Tensiomyography to assess muscle function and exercise-induced fatigue in healthy participants. A systematic review with meta-analysis. J Electromyogr Kinesiol 2019; 47:65-87. [DOI: 10.1016/j.jelekin.2019.05.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/16/2019] [Accepted: 05/03/2019] [Indexed: 02/04/2023] Open
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Martín-San Agustín R, Medina-Mirapeix F, Alakhdar Y, Benítez-Martínez JC. Sex Differences in the Velocity of Muscle Contraction of the Hamstring and Quadriceps Among Recreationally Active Young Adults. J Strength Cond Res 2019; 33:1252-1257. [DOI: 10.1519/jsc.0000000000003122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Seijas R, Marín M, Rivera E, Alentorn-Geli E, Barastegui D, Álvarez-Díaz P, Cugat R. Gluteus maximus contraction velocity assessed by tensiomyography improves following arthroscopic treatment of femoroacetabular impingement. Knee Surg Sports Traumatol Arthrosc 2018; 26:976-982. [PMID: 28501988 DOI: 10.1007/s00167-017-4572-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 05/10/2017] [Indexed: 11/28/2022]
Abstract
PURPOSE Muscular impairment, particularly for the gluteus maximus (GM), has been observed in femoroacetabular impingement (FAI). The purpose of this study was to evaluate the tensiomyographic changes of the GM, rectus femoris (RF) and adductor longus (AL) before and after arthroscopic surgery for FAI. It was hypothesized that arthroscopic treatment of FAI would improve the preoperative muscular impairment. METHODS All patients undergoing arthroscopic treatment of FAI between January and July 2015 were approached for eligibility. Patients included had a tensiomyography (TMG) evaluation including maximal displacement (Dm) and contraction time (Tc) of these muscles in both lower extremities. TMG values between the injured and healthy sides were compared at the preoperative and post-operative (3, 6 and 12 months after surgery) periods. RESULTS There were no significant differences for the RF and AL, and Dm of the GM for any of the comparisons (n.s.). However, GM Tc was significantly lower at 3 (p = 0.016), 6 (p = 0.008), and 12 (p = 0.049) months after surgery in the injured side compared to preoperatively. GM Tc of the healthy side was significantly lower than the injured side at the preoperative period (p = 0.004) and at 3 (p = 0.024) and 6 (p = 0.028) months after surgery, but these significant differences were no longer observed at 12 months after surgery (n.s.). There was a significant reduction of pain in the GM area at 1 year after surgery compared to preoperatively (p < 0.0001). CONCLUSIONS Arthroscopic treatment of FAI and the subsequent rehabilitation improves contraction velocity of the GM of the injured side. Despite Tc is elevated in the GM of the injured compared to the healthy side preoperatively and at 3 and 6 months after surgery, differences in Tc between both sides are no longer significant at 12 months. Athletes with FAI participating in sports with great involvement of GM may benefit from arthroscopic treatment and its subsequent rehabilitation. TMG can be used as an objective measurement to monitor muscular improvements of the GM after surgery in these patients. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Roberto Seijas
- Fundación García Cugat, Barcelona, Spain. .,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain. .,Universtitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
| | - Miguel Marín
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain
| | - Eila Rivera
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain
| | - Eduard Alentorn-Geli
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain.,Mutualitat Catalana de Futbolistes, Federación Española de Fútbol, Barcelona, Spain
| | - David Barastegui
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain.,Mutualitat Catalana de Futbolistes, Federación Española de Fútbol, Barcelona, Spain
| | - Pedro Álvarez-Díaz
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain.,Universtitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.,Mutualitat Catalana de Futbolistes, Federación Española de Fútbol, Barcelona, Spain
| | - Ramón Cugat
- Fundación García Cugat, Barcelona, Spain.,Artroscopia GC, Hospital Quirón, Plaza Alfonso Comín 5-7 Planta -1, 08023, Barcelona, Spain.,Mutualitat Catalana de Futbolistes, Federación Española de Fútbol, Barcelona, Spain
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Martín-Rodríguez S, Alentorn-Geli E, Tous-Fajardo J, Samuelsson K, Marín M, Álvarez-Díaz P, Cugat R. Is tensiomyography a useful assessment tool in sports medicine? Knee Surg Sports Traumatol Arthrosc 2017; 25:3980-3981. [PMID: 28730374 DOI: 10.1007/s00167-017-4600-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/08/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Saúl Martín-Rodríguez
- Colegio Oficial de Licenciados en Educación Física de Canarias (COLEF), Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - Eduard Alentorn-Geli
- Fundación García Cugat, Plaza Alfonso Comín 5, Planta -1, 08023, Barcelona, Spain.,Artroscopia GC, S.L., Hospital Quirón, Barcelona, Spain.,Mutualidad Catalana de Futbolistas - Federación Española de Futbol, Barcelona, Spain
| | - Julio Tous-Fajardo
- Department of Strength and Conditioning, Chelsea FC, Cobham, England, UK
| | - Kristian Samuelsson
- Department of Orthopedics, Sahlgrenska University Hospital, Mölndal, Sweden.,Department of Orthopedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Miguel Marín
- Department of Physical Medicine and Rehabilitation, Hospital Quirón, Barcelona, Spain
| | - Pedro Álvarez-Díaz
- Fundación García Cugat, Plaza Alfonso Comín 5, Planta -1, 08023, Barcelona, Spain.,Artroscopia GC, S.L., Hospital Quirón, Barcelona, Spain.,Mutualidad Catalana de Futbolistas - Federación Española de Futbol, Barcelona, Spain.,Universitat Internacional de Catalunya, Barcelona, Spain
| | - Ramón Cugat
- Fundación García Cugat, Plaza Alfonso Comín 5, Planta -1, 08023, Barcelona, Spain. .,Artroscopia GC, S.L., Hospital Quirón, Barcelona, Spain. .,Mutualidad Catalana de Futbolistas - Federación Española de Futbol, Barcelona, Spain.
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12
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Impaired hip muscle strength in patients with femoroacetabular impingement syndrome. J Sci Med Sport 2017; 20:1062-1067. [DOI: 10.1016/j.jsams.2017.05.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 04/06/2017] [Accepted: 05/15/2017] [Indexed: 11/20/2022]
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