1
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Liu K, Ji L, Lu Y. Influence of Amputation on Kinetic Chain Musculature Activity During Basic and Modified Core Exercises. Int J Sports Physiol Perform 2024:1-9. [PMID: 38508161 DOI: 10.1123/ijspp.2023-0215] [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: 06/02/2023] [Revised: 12/21/2023] [Accepted: 02/05/2024] [Indexed: 03/22/2024]
Abstract
PURPOSE Core strength is vital for athletic performance, and many more exercises that involve the kinetic chain have been designed for able-bodied athletes. Disabilities that impair the kinetic chain can reduce the effectiveness of strength training. However, the impact of amputation on core strength training of people with disabilities and its underlying mechanism remains unclear. This study aimed to evaluate the muscle activation patterns and levels in athletes with amputation during 4 basic and modified weight-bearing core strength-training exercises. METHODS Fifteen elite athletes with unilateral amputation (170.6 [7.3] cm; 63.9 [11.9] kg; 25.9 [5.3] y) volunteered for this study. Surface electromyography was used to measure the muscle activity mainly in the lumbopelvic-hip complex-stabilizing muscles during 4 kinetic chain trunk exercises with and without modifications. RESULTS The significance level was set at α = .05. The results showed a significant difference in muscle activation between different body sides (P < .05). Specifically, amputation on the support position resulted in a diagonal pattern of muscle activation, and amputation on the free distal segments resulted in a unilateral dominant pattern with higher activation in muscles on the nonamputated side (P < .05). Modifications led to significant decreases in muscle activation asymmetry index (P < .05). CONCLUSIONS Amputation caused muscle activation asymmetry and 2 activation patterns. Modifications by enhancing proximal stability and adjusting distal loading effectively reduced the asymmetry of muscle activation. Coaches and clinicians can use these results to tailor exercises for athletes with disabilities in training and rehabilitation.
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Affiliation(s)
- Kaiqi Liu
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, China
| | - Linhong Ji
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, China
| | - Yijia Lu
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, China
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2
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Can EN, Harput G, Turgut E. Shoulder and Scapular Muscle Activity During Low and High Plank Variations With Different Body-Weight-Bearing Statuses. J Strength Cond Res 2024; 38:245-252. [PMID: 37815235 DOI: 10.1519/jsc.0000000000004622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
ABSTRACT Can, EN, Harput, G, and Turgut, E. Shoulder and scapular muscle activity during low and high plank variations with different body-weight-bearing statuses. J Strength Cond Res 38(2): 245-252, 2024-This study investigated the activation levels and activation ratios of shoulder and scapular muscles during low plank (LP) and high plank (HP) variations, with varying levels of body-mass support, including 4-point, 3-pod, and 2-point body-weight-bearing (BWB) statuses. The study was conducted with 21 healthy men (mean ± SD , 26 ± 6.5 years of age and 24.4 ± 2.4 kg·m -2 BMI). Ten different plank exercises were performed in a mixed order by changing elbow joint positions (LP and HP) and BWB statuses (2-point, 3-pod, and 4-point). Activation levels of the lower trapezius (LT), middle trapezius (MT), upper trapezius (UT), biceps brachii, triceps brachii, infraspinatus, and serratus anterior (SA) muscles were assessed with a surface electromyography device. Results of this study showed that elbow position changes resulted in higher LT ( p = 0.01) and TB ( p = 0.001) activation in HP exercises. In general, it was observed that an increase in BWB status was effective in increasing activation for the scapula and shoulder girdle muscles. The ratios of the UT muscle to the SA, LT, and MT muscles were less than 1 during side plank, bird dog, front reach, shoulder taps, and plank with shoulder external rotation exercises. High plank with toe touch exercise resulted in a marked increase in the UT activation. Therefore, it was concluded plank variations alter activation levels and activation ratios of shoulder and scapular muscles. Plank exercises may be used in shoulder rehabilitation and the progression in plank variations can be achieved by changing elbow position and BWB status based on individual requirements.
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Affiliation(s)
- Ezgi Nur Can
- Hacettepe University, Faculty of Physical Therapy and Rehabilitation, Ankara, Turkey
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3
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Carretti G, Bianco R, Sgambati E, Manetti M, Marini M. Reactive Agility and Pitching Performance Improvement in Visually Impaired Competitive Italian Baseball Players: An Innovative Training and Evaluation Proposal. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6166. [PMID: 37372753 DOI: 10.3390/ijerph20126166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 05/26/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023]
Abstract
Visual input significantly affects kinesthesis skills and, hence, visually impaired individuals show less developed sensorimotor control, especially in an unfamiliar outdoor environment. Regular blind baseball practice can counteract such a deficit but, given the complex kinetic chain model required, a targeted workout proposal is needed to improve the main athletic gesture performance. On these premises, we investigated, for the first time, the running and pitching performance of a competitive Italian blind baseball team through quantitative tools and parameters such as Libra Easytech sensorized proprioceptive board, goniometric active range of motion, chronometric speed, and pitching linear length. Moreover, the perceived physical exertion was assessed by the Borg CR10 scale. Consequently, an adapted athletic training protocol was designed and tested on the field during the competitive season, with the aim to strengthen sport specific-gesture coordination and efficacy as well as to prevent injuries. Quantitative assessments showed an improvement in ankle stability index, bilateral upper limb and hip mobility, reactive agility, running braking phase control during second base approaching, and auditory target-related pitching accuracy along with a decrease in perceived physical exertion. This protocol might therefore represent an effective and easily reproducible training and evaluation approach to tailor management of visually impaired baseball players, and safely improve their athletic performance under the supervision of an adapted exercise specialist.
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Affiliation(s)
- Giuditta Carretti
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Raffaele Bianco
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Eleonora Sgambati
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
| | - Mirko Manetti
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Mirca Marini
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
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4
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Ben Kibler W, Lockhart JW, Cromwell R, Sciascia A. Managing Scapular Dyskinesis. Phys Med Rehabil Clin N Am 2023; 34:427-451. [PMID: 37003662 DOI: 10.1016/j.pmr.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Scapular dyskinesis, the impairment of optimal scapular position and motion, is common in association with shoulder injury. A comprehensive evaluation process can show the causative factors and lead to effective treatment protocols. The complexity of scapular motion and the integrated relationship between the scapula, humerus, trunk, and legs suggest a need to develop rehabilitation programs that involve all segments working as a unit rather than isolated components. This is best accomplished with an integrated rehabilitation approach that includes rectifying deficits in mobility, strength, and motor control but not overtly focusing on any one area.
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5
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Doğan M, Ayvat E, Kılınç M. Telerehabilitation versus virtual reality supported task-oriented circuit therapy on upper limbs and trunk functions in patients with multiple sclerosis: A randomized controlled study. Mult Scler Relat Disord 2023; 71:104558. [PMID: 36812718 DOI: 10.1016/j.msard.2023.104558] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/20/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
INTRODUCTION The purpose of this study was to investigate the effects of two different technology-supported rehabilitation approaches which are mobile application based telerehabilitation (TR) and virtual reality supported task oriented circuit therapy groups (V-TOCT) on the upper limb (UL), trunk function, and functional activity kinematics in patients with Multiple Sclerosis (PwMS). METHODS Thirty-four patients with PwMS were included in this study. The participants were evaluated at baseline and after eight weeks of treatment by an experienced physiotherapist using the Trunk Impairment Scale (TIS), kinetic function sub-parameter of the International Cooperative Ataxia Rating Scale (K-ICARS), ABILHAND, Minnesota Manual Dexterity tests (MMDT), and trunk and UL kinematics using inertial sensors. The participants were randomized into the TR and V-TOCT groups with a 1:1 allocation ratio. All participants received interventions for 1 hour per session, 3 sessions per week, for 8 weeks. RESULTS Trunk impairment, ataxia severity, UL, and hand function showed statistically significant improvement in both groups. The functional range of motion (FRoM) of shoulder and wrist increased transversal plane and the FRoM of shoulder increased on sagittal plane in V-TOCT. Log Dimensionless Jerk (LDJ) decreased on transversal plane in V-TOCT group. The FRoM of the trunk joints increased on the coronal plane and the FRoM of the trunk joints increased on the transversal plane in TR. Dynamic balance of the trunk and K-ICARS improved better in V-TOCT than in TR (p < 0,05). CONCLUSIONS V-TOCT and TR improved UL function, TIS, and ataxia severity in PwMS. The V-TOCT was more effective than the TR in terms of dynamic trunk control and kinetic function. The clinical results were confirmed using the kinematic metrics of motor control.
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Affiliation(s)
- Mert Doğan
- Department of Neurological Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey.
| | - Ender Ayvat
- Department of Neurological Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
| | - Muhammed Kılınç
- Department of Neurological Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
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Mendez-Rebolledo G, Orozco-Chavez I, Morales-Verdugo J, Ramirez-Campillo R, Cools AM. Electromyographic analysis of the serratus anterior and upper trapezius in closed kinetic chain exercises performed on different unstable support surfaces: a systematic review and meta-analysis. PeerJ 2022; 10:e13589. [PMID: 35791364 PMCID: PMC9250763 DOI: 10.7717/peerj.13589] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/24/2022] [Indexed: 01/17/2023] Open
Abstract
Background Multiple investigations have compared the electromyographic (EMG) activity of the scapular muscles between stable and unstable support surfaces during the execution of closed kinetic chain exercises. However, these comparative analyses have grouped different unstable surfaces (wobble board, BOSU, therapeutic ball, and suspension equipment) into a single data pool, without considering the possible differences in neuromuscular demand induced by each unstable support surface. This study aimed to analyze the individual effect of different unstable support surfaces compared to a stable support surface on scapular muscles EMG activity during the execution of closed kinetic chain exercises. Methodology A literature search was conducted of the Pubmed Central, ScienceDirect and SPORTDiscus databases. Studies which investigated scapular muscles EMG during push-ups and compared at least two support surfaces were included. The risk of bias of included articles was assessed using a standardized quality assessment form for descriptive, observational and EMG studies, and the certainty of the evidence was measured with the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. A random-effects model was used to calculate effect sizes (ES, Hedge's g). Results Thirty studies were selected in the systematic review. Of these, twenty-three low-to-high quality studies (498 participants) were included in the meta-analysis. The main analyzes revealed, in decreasing order, greater UT EMG activity during push-ups performed on suspension equipment (ES = 2.92; p = 0.004), therapeutic ball (ES = 1.03; p < 0.001) and wobble board (ES = 0.33; p = 0.003); without effect on the BOSU ball. In addition, no effect was observed for SA on any unstable device. The certainty of the evidence ranged from low to very low due to the inclusion of descriptive studies, as well as high imprecision, inconsistency, and risk of publication bias. Conclusion These findings could be applied in scapular muscles strengthening in healthy individuals. The use of suspension equipment achieves higher UT activation levels. Conversely, the use of any type of unstable devices to increase the activation levels of the SA in shoulder musculoskeletal dysfunctions is not recommended. These conclusions should be interpreted with caution as the available evidence showed a low to very low certainty of evidence, downgraded mostly by inconsistency and imprecision.
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Affiliation(s)
| | - Ignacio Orozco-Chavez
- Departamento de Ciencias del Movimiento Humano, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile
| | - Juan Morales-Verdugo
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad Católica del Maule, Talca, Chile
| | - Rodrigo Ramirez-Campillo
- Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
| | - Ann M.J. Cools
- Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
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7
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Kibler WB, Sciascia A, Tokish JT, Kelly JD, Thomas S, Bradley JP, Reinold M, Ciccotti M. Disabled Throwing Shoulder: 2021 Update: Part 2-Pathomechanics and Treatment. Arthroscopy 2022; 38:1727-1748. [PMID: 35307239 DOI: 10.1016/j.arthro.2022.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/15/2021] [Accepted: 02/03/2022] [Indexed: 02/02/2023]
Abstract
The purpose of this paper is to provide updated information for sports healthcare specialists regarding the disabled throwing shoulder (DTS). A panel of experts, recognized for their experience and expertise in this field, was assembled to address and provide updated information on several topics that have been identified as key areas in creating the DTS spectrum. Each panel member submitted a concise presentation on one of the topics within these areas, each of which were then edited and sent back to the group for their comments and consensus agreement in each area. Part two presents the following consensus conclusions and summary findings regarding pathomechanics and treatment, including (1) internal impingement results from a combination of scapular protraction and humeral head translation; (2) the clinically significant labral injury that represents pathoanatomy can occur at any position around the glenoid, with posterior injuries most common; (3) meticulous history and physical examination, with a thorough kinetic chain assessment, is necessary to comprehensively identify all the factors in the DTS and clinically significant labral injury; (4) surgical treatment should be carefully performed, with specific indications and techniques incorporating low profile implants posterior to the biceps that avoid capsular constraint; (5) rehabilitation should correct all kinetic chain deficits while also developing high-functioning, throwing-specific motor patterns and proper distribution of loads and forces across all joints during throwing; and (6) injury risk modification must focus on individualized athlete workload to avoid overuse. LEVEL OF EVIDENCE: V, expert opinion.
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Affiliation(s)
- W Ben Kibler
- Shoulder Center of Kentucky, Lexington Clinic, Lexington, Kentucky, U.S.A
| | - Aaron Sciascia
- Department of Exercise and Sport Science, Eastern Kentucky University, Richmond, Kentucky, U.S.A..
| | - J T Tokish
- Orthopedic Sports Medicine Fellowship, Mayo Clinic Arizona, Phoenix, Arizona, U.S.A
| | - John D Kelly
- Shoulder Sports Medicine, Penn Perleman School of Medicine, Philadelphia, Pennsylvania, U.S.A
| | - Stephen Thomas
- Department of Exercise Science, Jefferson College of Rehabilitation Science, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - James P Bradley
- University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, U.S.A
| | - Michael Reinold
- Champion PT and Performance, Boston, Massachusetts, U.S.A.; Chicago White Sox, Chicago, Illinois, U.S.A
| | - Michael Ciccotti
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
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Barfield JW, Bordelon NM, Wasserberger KW, Oliver GD. Preliminary Analysis of Closed Kinetic Chain Upper Extremity Stability Test Differences Between Healthy and Previously Injured/In-Pain Baseball Pitchers. Sports Health 2022; 15:290-294. [PMID: 35441548 PMCID: PMC9950992 DOI: 10.1177/19417381221083316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND A comprehensive examination of the kinetic chain during an overhead athlete's upper extremity assessment, such as the closed kinetic chain upper extremity stability test (CKCUEST), may help clinicians identify potential upper extremity dysfunction. HYPOTHESIS Body position observed on dominant and nondominant hand touch during a CKCUEST trial differs between players with previous injury/pain history compared with healthy counterparts. STUDY DESIGN Descriptive laboratory study. LEVEL OF EVIDENCE Level 5. METHODS Seventeen baseball pitchers were recruited to participate (18.03 ± 2.01 years; 185.40 ± 6.57 cm; 83.92 ± 13.87 kg). A medical history questionnaire was used to separate participants into groups, either previous injury/pain or healthy. Kinematic and kinetic data were collected on the participants performing the CKCUEST with an electromagnetic tracking system. Kinematics were analyzed using a pair of 1-way multivariate analyses of variance (MANOVAs). RESULTS The MANOVA for nondominant hand touch in the CKCUEST revealed a significant difference in lumbopelvic-hip complex (LPHC) kinematics between previously injured/pain group and healthy group (Λ = 0.37; F4,12 = 5.12; P = 0.01). CONCLUSIONS The previously injured/pain group displayed less pelvic axial rotation and dominant hip abduction during the nondominant touch indicating more LPHC stability during the nondominant touch. In conclusion, differences were observed in LPHC kinematics during the CKCUEST nondominant touch between a healthy and previously injured/pain group perhaps due to the increased awareness provided through rehabilitative programs for the previously injured/pain group. CLINICAL RELEVANCE Clinicians can use this information to help address kinetic chain movement efficiency within baseball pitchers. This study provides evidence of LPHC kinematic differences during the nondominant touch of baseball pitchers and may enhance the use of the CKCUEST as a return-to-play assessment.
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Affiliation(s)
- Jeff W. Barfield
- Department of Physical Education and
Exercise Science, Lander University, Greenwood, South Carolina,Jeff W. Barfield, PhD,
Department of Physical Education and Exercise Science, Lander University, 320
Stanley Ave, Greenwood, SC 29649, USA (
)
| | - Nicole M. Bordelon
- Sports Medicine and Movement Lab,
School of Kinesiology, Auburn University, Auburn, Alabama
| | - Kyle W. Wasserberger
- Sports Medicine and Movement Lab,
School of Kinesiology, Auburn University, Auburn, Alabama
| | - Gretchen D. Oliver
- Sports Medicine and Movement Lab,
School of Kinesiology, Auburn University, Auburn, Alabama
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9
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Mendez-Rebolledo G, Morales-Verdugo J, Orozco-Chavez I, Habechian FAP, Padilla EL, de la Rosa FJB. Optimal activation ratio of the scapular muscles in closed kinetic chain shoulder exercises: A systematic review. J Back Musculoskelet Rehabil 2021; 34:3-16. [PMID: 32831190 DOI: 10.3233/bmr-191771] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Muscle synergies contribute to scapular position during arm movement. The trapezius and serratus anterior (SA) muscles are the main stabilizers and are therefore the main target muscles of therapeutic exercises. OBJECTIVE To systematically review the current literature investigating the optimal activation ratio of the scapular muscles during a range of closed kinetic chain exercises. METHODS A systematic review search was conducted to identify studies reporting shoulder electromyography (EMG) activity during rehabilitation exercises in healthy participants. The search was conducted in PubMed, Cochrane Library, MEDLINE, CINAHL, Scopus, SPORTDiscus, and ScienceDirect. The included studies reported closed kinetic chain exercises and the muscle activity as a percentage of maximum voluntary isometric contraction (%MVIC) or muscle ratios of the lower trapezius (LT), middle trapezius (MT), and SA with respect to the upper trapezius (UT). Muscle ratios were classified as optimal if they were equal to or lower than 0.6, and the adapted Newcastle-Ottawa Scale (NOS) was used to evaluate the methodological quality of the selected studies. RESULTS Twenty-nine studies were included in this review; 7 main exercises and 30 variations of these were reported. The average electromyographic activity of the concentric and eccentric phase was considered. Half Push Up, Push Up Plus, and Scap Protraction exercises showed optimal SA activity (UT/SA < 0.6), while Press Up, Half Push Up, and One Hand Plank exercises showed optimal LT activity (UT/LT < 0.6). According to the NOS, 15 studies were classified as moderate methodological quality. CONCLUSIONS The exercises in higher positions (e.g. exercises with the trunk closest to the vertical line) or unstable surfaces tend to favor UT activity over the MT, LT and SA. The exercises including scapular retraction showed optimal UT/MT and UT/LT ratios, while those including scapular protraction showed optimal UT/SA ratios. This will assist therapists in the correct selection of exercises for shoulder rehabilitation.
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Affiliation(s)
- Guillermo Mendez-Rebolledo
- Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Chile.,Universidad Pablo de Olavide, Seville, Spain
| | - Juan Morales-Verdugo
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad Católica del Maule, Talca, Chile
| | - Ignacio Orozco-Chavez
- Departamento de Ciencias del Movimiento Humano, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile
| | - Fernanda Assis Paes Habechian
- Laboratorio de Investigación Clínica en Kinesiología, Departamento de Kinesiología, Facultad de Ciencias de la Salud, Universidad Católica del Maule, Talca, Chile
| | - Eleazar Lara Padilla
- Postgrado en Ciencias del Ejercicio y del Deporte, Universidad Estatal del Valle de Ecatepec, México
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10
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Klein B, Cobian D, Simmons G, Reinold M. Offseason Workout Recommendations for Baseball Players. Curr Rev Musculoskelet Med 2021; 14:174-184. [PMID: 33635521 DOI: 10.1007/s12178-021-09700-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/08/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Offseason training programs are crucial for the baseball athlete. Preparation for the competitive season should be carefully planned to allow long-term athletic success. The two goals of the offseason training program are to optimize performance and reduce injury risk. These goals can only be accomplished with an understanding of the unique physical demands of the sport, and how these demands relate to performance and injury. The purpose of this article is to review the unique demands of baseball training along with current strength and conditioning principles to optimize offseason training for the baseball athlete. RECENT FINDINGS Traditional strength and conditioning programs used in other sports may not maximize the qualities necessary for optimal baseball performance. Traditional strength and conditioning exercises, such as squat and deadlift, primarily train sagittal plane movement while frontal and transverse plane movements are likely equally as important for baseball players. Biomechanical studies have shown that trunk rotation power has the largest influence on throwing velocity in pitchers. Programs should also be designed to reduce injury risk for common injuries. The most common injuries in baseball include hamstring strains, throwing arm injuries, paralumbar muscle strains, hip adductor strains, and oblique muscle strains. This review describes the typical periodization phases of the offseason and provides a sample program outlining an offseason program for a professional baseball player from September through February.
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Affiliation(s)
| | | | | | - Michael Reinold
- Chicago White Sox, Chicago, IL, USA
- Champion Physical Therapy and Performance, Waltham, MA, USA
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11
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Bordelon NM, Wasserberger KW, Cassidy MM, Oliver GD. The Effects of Load Magnitude and Carry Position on Lumbopelvic-Hip Complex and Scapular Stabilizer Muscle Activation During Unilateral Dumbbell Carries. J Strength Cond Res 2021; 35:S114-S119. [PMID: 33298714 DOI: 10.1519/jsc.0000000000003880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicole M Bordelon
- Sports Medicine and Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama
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12
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Kibler WB, Stone AV, Zacharias A, Grantham WJ, Sciascia AD. Management of Scapular Dyskinesis in Overhead Athletes. OPER TECHN SPORT MED 2021. [DOI: 10.1016/j.otsm.2021.150797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Wasserberger KW, Downs JL, Barfield JW, Williams TK, Oliver GD. Lumbopelvic-Hip Complex and Scapular Stabilizing Muscle Activations During Full-Body Exercises With and Without Resistance Bands. J Strength Cond Res 2020; 34:2840-2848. [DOI: 10.1519/jsc.0000000000002842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Downs J, Wasserberger K, Oliver GD. Influence of a Pre-throwing Protocol on Range of Motion and Strength in Baseball Athletes. Int J Sports Med 2020; 42:183-190. [PMID: 32851634 DOI: 10.1055/a-1214-6278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Though chronic overhand throwing is known to result in range of motion and strength adaptations, there is limited research regarding interventions for maintenance of these characteristics. Therefore, the purposes of this study were to explore the use of a pre-throwing protocol focusing on lumbopelvic-hip complex musculature in high school baseball players and examine its effects on shoulder and hip range of motion and isometric strength over the course of a season. Four exercises were added to the intervention team's warm-up routine. The control and intervention teams' passive bilateral hip and shoulder range of motion and isometric strength were assessed pre/post-season. A multivariate analysis of variance revealed significant differences in delta scores between the teams for multiple shoulder and hip range of motion and isometric strength variables. Key results were the intervention team lost significantly more stride hip external rotation but gained more isometric strength than the control team. The intervention team was also able to better maintain shoulder range of motion than the control team. Practitioners should use the results of this study and consider incorporating exercises that target lumbopelvic-hip complex musculature into their current training program.
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Affiliation(s)
- Jessica Downs
- School of Kinesiology, Auburn University, Auburn, Alabama, United States
| | - Kyle Wasserberger
- School of Kinesiology, Auburn University, Auburn, Alabama, United States
| | - Gretchen D Oliver
- School of Kinesiology, Auburn University, Auburn, Alabama, United States
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15
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Smidebush M, Stewart E, Shapiro R, Chander H, Knight A. Mean muscle activation comparison between fastballs and curveballs with respect to the upper and lower extremity. J Biomech 2019; 94:187-192. [PMID: 31420156 DOI: 10.1016/j.jbiomech.2019.07.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 07/28/2019] [Accepted: 07/29/2019] [Indexed: 11/27/2022]
Abstract
Baseball research on muscle activity (upper and lower extremity) during the throwing motion is important to understanding pitching mechanics for the future. Therefore, it is the purpose of this research study to compare the lower extremity muscle and upper extremity muscle activation patterns associated with the curveball pitch and the fastball pitch from the stretch position. Twelve skilled (NCAA collegiate level) pitchers volunteered to be in this study, with a mean age of 22.3 ± 4.53 years, mean height of 1.74 ± 0.13 m, and mean mass of 89.0 k ± 10.97 kg. The pitchers were fitted with six surface electromyography (EMG) bipolar electrodes on the stride leg biceps femoris, medial gastrocnemius, ipsilateral side lower trapezius, upper trapezius, triceps brachii and biceps brachii. Each pitcher underwent maximum voluntary isometric contraction (MVIC) testing and then performed the fastball & curveball pitching sequence. All EMG variables of interest were normalized using MVIC data and compared between pitching type. A repeated measures ANOVA was conducted for all muscle activity as well. If significance was found a pairwise analysis (Bonferroni) was performed between pitch type, using SPSS (p 0.05). Significant differences in the mean muscle activity for the fastball and curveball pitched from the stretch were observed. A higher level of muscle activity was found for the stretch fastball when compared to the stretch curveball. This study was able to provide a baseline measurement of muscle activity; however, kinematics and kinetics should be measured in future studies.
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Affiliation(s)
- Megan Smidebush
- Kinesiology, Mississippi State University, Starkville, MS, USA; Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, USA.
| | - Ethan Stewart
- Kinesiology, Mississippi State University, Starkville, MS, USA
| | - Robert Shapiro
- Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, USA
| | - Harish Chander
- Kinesiology, Mississippi State University, Starkville, MS, USA
| | - Adam Knight
- Kinesiology, Mississippi State University, Starkville, MS, USA
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16
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Oliver GD, Friesen K, Barfield JW, Giordano K, Anz A, Dugas J, Andrews J. Association of Upper Extremity Pain With Softball Pitching Kinematics and Kinetics. Orthop J Sports Med 2019; 7:2325967119865171. [PMID: 31467938 PMCID: PMC6704423 DOI: 10.1177/2325967119865171] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background: There is a paucity of research regarding the relationship between fastpitch
softball pitching mechanics and reported pain. Thus, understanding the
pitching mechanics of athletes pitching with upper extremity pain and those
pain free is paramount. Purpose: To examine lower extremity pitching mechanics, upper extremity kinetics, and
upper extremity pain in National Collegiate Athletic Association (NCAA)
Division I female softball pitchers. Study Design: Descriptive laboratory study. Methods: A total of 37 NCAA Division I female softball pitchers (mean age, 19.84 ±
1.28 years; mean height, 173.67 ± 7.77 cm; mean weight, 78.98 ± 12.40 kg)
from across the United States were recruited to participate. Participants
were divided into 2 groups: upper extremity pain (n = 13; mean age, 19.69 ±
1.18 years; mean height, 172.60 ± 11.49 cm; mean weight, 86.75 ± 13.02 kg)
and pain free (n = 24; mean age, 19.91 ± 1.35 years; mean height, 174.26 ±
4.96 cm; mean weight, 74.78 ± 9.97 kg). An electromagnetic tracking system
was used to obtain kinematic and kinetic data during the riseball softball
pitch. Results: At foot contact (F3,33 = 7.01, P = .001), backward elimination
regression revealed that stride length, trunk rotation, and center of mass
(COM) significantly explained about 33% of variance with softball pitchers
experiencing upper extremity pain (adjusted R2 = 0.33). Conclusion: At foot contact, the kinematic variables of increased trunk rotation toward
the pitching arm side, increased stride length, and a posteriorly shifted
COM were associated with upper extremity pain in collegiate softball
pitchers. Variables early in the pitching motion that do not set a working
and constructive proximal kinetic chain foundation for the rest of the pitch
to follow could be associated with breakdowns more distal in the kinetic
chain, possibly increasing the susceptibility to upper extremity pain. Clinical Relevance: The identification of pitching mechanics associated with pain allows
clinicians to develop exercises to avoid such mechanics. Avoiding mechanics
associated with pain may help reduce the prevalence of pain in windmill
softball pitchers as well as help coaches incorporate quantitative
biomechanics into their instruction.
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Affiliation(s)
- Gretchen D Oliver
- Sports Medicine & Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, USA
| | - Kenzie Friesen
- Sports Medicine & Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, USA
| | - Jeff W Barfield
- Sports Medicine & Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, USA
| | - Kevin Giordano
- Sports Medicine & Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, USA
| | - Adam Anz
- Andrews Research & Education Foundation, Gulf Breeze, Florida, USA
| | - Jeff Dugas
- Andrews Sports Medicine & Orthopaedic Center, Birmingham, Alabama, USA
| | - James Andrews
- Andrews Research & Education Foundation, Gulf Breeze, Florida, USA
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17
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Trunk position sense, postural stability, and spine posture in fibromyalgia. Rheumatol Int 2019; 39:2087-2094. [DOI: 10.1007/s00296-019-04399-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/26/2019] [Indexed: 11/26/2022]
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