Preseason shoulder rotational isokinetic strength and shoulder injuries in volleyball players

2021 ◽  
pp. 1-6
Author(s):  
Vedran Hadžić ◽  
Edvin Dervišević ◽  
Primož Pori ◽  
Alen Hadžić ◽  
Tine Sattler
Keyword(s):  
Protective Factor ◽  
Preventive Measures ◽  
Strength Ratio ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Isokinetic Testing ◽  
Injury Occurrence ◽  
Volleyball Players ◽  
National League ◽  
Normal Strength

BACKGROUND: Rotator cuff weakness is considered an important risk factor for shoulder injuries in volleyball. OBJECTIVE: To evaluate association of shoulder preseason strength status with shoulder injury occurrence in subsequent season. METHODS: Volleyball players (N= 181; 99 men) from Slovenian 1st and 2nd national league volunteered to participate in this prospective cohort study. Preseason isokinetic testing of the shoulder was conducted at 60∘/s in the concentric mode of contraction over a RoM of 60∘ with five repetitions of internal (IR) and external (ER) rotation. During the subsequent season the players reported shoulders injuries through a weekly questionnaire. RESULTS: During the season we have registered 14 (7.7%) shoulder injuries (10 in men). All injuries affected the dominant shoulder. There was significant preseason weakness of ER and lower ER/IR strength ratio in players with shoulder injury. Normal strength ratio ER/IR was a significant protective factor (Exp (B) = 0.217, 95% C.I. 0.058–0.811) for shoulder injury occurrence when controlled for sex and previous injury. CONCLUSIONS: The inclusion of systematic strengthening of the external rotators of the shoulder is necessary, especially for male volleyball players, as part of preventive measures for the prevention of shoulder injuries.

scholarly journals Strength Asymmetry of the Shoulders in Elite Volleyball Players

2014 ◽  
Vol 49 (3) ◽  
pp. 338-344 ◽  
Author(s):  
Vedran Hadzic ◽  
Tine Sattler ◽  
Matjaž Veselko ◽  
Goran Markovic ◽  
Edvin Dervisevic
Keyword(s):  
Internal Rotation ◽  
External Rotation ◽  
Skill Level ◽  
Strength Ratio ◽  
Shoulder Injury ◽  
Volleyball Players ◽  
Shoulder Strength ◽  
Strength Asymmetry ◽  
Rotation Strength ◽  
Injury Status

Context: Volleyball players are reported to have shoulder strength imbalances. Previous authors have primarily investigated small samples of male players at a single skill level, without considering playing position, and with inconsistent findings. Objective: To evaluate shoulder strength asymmetry and a history of shoulder injury in a large sample of professional volleyball players of both sexes across different playing positions and skill levels. Design: Descriptive laboratory study. Patients or Other Participants: A sample of 183 volleyball players (99 men, 84 women). Main Outcome Measure(s): We assessed shoulder internal-rotator and external-rotator concentric strength at 60°/s using an isokinetic dynamometer and dominant-nondominant differences in shoulder strength and strength ratios using repeated-measures analyses of variance. Peak torque was normalized for body mass and external-rotation/internal-rotation concentric strength. Results: Internal-rotation strength was asymmetric in favor of the dominant side in both sexes, regardless of previous shoulder injury status. Male volleyball players had a lower shoulder strength ratio on the dominant side, regardless of previous shoulder injury status. However, this finding was valid only when hand dominance was taken into account. Female volleyball players playing at a higher level (ie, first versus second division) were 3.43 times more likely to have an abnormal strength ratio. Playing position was not associated with an abnormal shoulder strength ratio or strength asymmetry. Conclusions: In male volleyball players, the external-rotation/internal-rotation strength ratio of the dominant shoulder was lower, regardless of playing position, skill level, or a previous shoulder injury. In female players, the ratio was less only in those at a higher skill level. Although speculative, these findings generally suggest that female volleyball players could have a lower risk of developing shoulder-related problems than male volleyball players. Isokinetic shoulder testing may reveal important information about the possible risk factors for shoulder injuries, so we recommend including it in the functional screening of volleyball players.

scholarly journals Comparison of Upper Arm Kinematics During a Volleyball Spike Between Players With and Without a History of Shoulder Injury

2013 ◽  
Vol 29 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Lara Mitchinson ◽  
Amity Campbell ◽  
Damian Oldmeadow ◽  
Will Gibson ◽  
Diana Hopper
Keyword(s):  
Mixed Models ◽  
Perceived Risk ◽  
Rotation Velocity ◽  
Return To Play ◽  
Shoulder Abduction ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Volleyball Players ◽  
Before And After ◽  
History Of

Volleyball players are at high risk of overuse shoulder injuries, with spike biomechanics a perceived risk factor. This study compared spike kinematics between elite male volleyball players with and without a history of shoulder injuries. Height, mass, maximum jump height, passive shoulder rotation range of motion (ROM), and active trunk ROM were collected on elite players with (13) and without (11) shoulder injury history and were compared using independent samplesttests (P< .05). The average of spike kinematics at impact and range 0.1 s before and after impact during down-the-line and cross-court spike types were compared using linear mixed models in SPSS (P< .01). No differences were detected between the injured and uninjured groups. Thoracic rotation and shoulder abduction at impact and range of shoulder rotation velocity differed between spike types. The ability to tolerate the differing demands of the spike types could be used as return-to-play criteria for injured athletes.

scholarly journals The Relationship between Scapular Upward Rotation and Shoulder Internal and External Rotation Isokinetic Strength in Professional Baseball Pitchers

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 759
Author(s):  
Byung Gon Kim ◽  
Seung Kil Lim ◽  
Sunga Kong
Keyword(s):  
External Rotation ◽  
Professional Baseball ◽  
Isokinetic Strength ◽  
Strength Ratio ◽  
Shoulder Injury ◽  
Isokinetic Dynamometer ◽  
Normal Range ◽  
History Of ◽  
Baseball Pitchers ◽  
The Relationship

This study aims to assess the relationship between scapular upward rotation (SUR) across varying humeral-elevation angles (HEAs) and shoulder isokinetic strength and ratio in professional baseball pitchers. The subjects were professional baseball pitchers (n = 16) without a history of shoulder injury in the last six months. The subject’s SUR angles were measured with the humerus elevated at HEAs of 0° (at rest), 60°, 90°, and 120° to the scapular plane. Shoulder isokinetic strength was evaluated for shoulder internal rotation (IR) and external rotation (ER) strength (PT%BW and TW%BW), and the ER/IR strength ratios were determined at 60, 120 and 180°/s using an isokinetic dynamometer. The SUR angle at an HEA of 0° was positively correlated with IR strength at 120°/s (r = 0.535) and 180°/s (r = 0.522). The SUR angle at an HEA of 60° was negatively correlated with the ER/IR strength ratios at 60°/s (r = −0.505) and 120°/s (r = −0.500). The SUR angle at an HEA of 90° was negatively correlated with the ER/IR strength ratios at 60°/s (r = −0.574; r = −0.554) and 120°/s (r = −0.521; r = −0.589) as well as with ER strength at 180°/s (r = −0.591, r = −0.556). The SUR angle at an HEA of 120° was negatively correlated with ER strength at 60°/s (r = −0.558), 120°/s (r = −0.504; r = −0.524), and 180°/s (r = −0.543) and the ER/IR strength ratio at 60°/s (r = −0.517). In this study, we found that the ratio of isokinetic strength between ER and IR became closer to the normal range on increasing the SUR angle. In particular, an HEA of 90°, which resembles the pitching motion, showed a clear relationship between SUR, shoulder ER, and the ratio of ER/IR isokinetic strength in professional baseball pitchers.

scholarly journals Shoulder injuries in adolescent rugby players

2016 ◽  
Vol 8 (3) ◽  
pp. 159-166 ◽  
Author(s):  
Ghazal Hodhody ◽  
Tanya A Mackenzie ◽  
Lennard Funk
Keyword(s):  
Recurrence Rate ◽  
Study Data ◽  
County Level ◽  
Mechanism Of Injury ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Recurrence Rates ◽  
Post Surgery ◽  
Patterns Of Injury ◽  
Rugby Players

Background Rugby is a high-intensity contact sport, frequently causing shoulder injuries. Between the ages of 12 years to 18 years, academy and county level players are being selected for professional contracts, making this is a critical stage of their career. The present study aimed to describe the patterns of injury in adolescent rugby players with shoulder injuries. Methods Academy and county level rugby players in the target age group, over a 7-year period, were included in the present study. Data collected included the mechanism of injury, position and level of play, radiology and surgical findings, and recurrence rate at a minimum of 2 years post-surgery. Results One hundred and sixty-nine cases adhered to the inclusion criteria, with most cases involving two or more pathologies in the shoulder (54%). Forwards sustained more shoulder injuries than backs, incurring more labral injuries. By contrast, backs had a higher incidence of bony pathology. The mechanism of injury frequently correlated with player positions. There was a 21% injury recurrence rate, with forwards (7%) and higher level academy players (11%) most likely to suffer a recurrence. Conclusions Shoulder injury patterns in this important group of adolescent contact athletes are complex, with recurrence rates being higher than those in older rugby players.

scholarly journals SHOULDER INJURIES IN WHEELCHAIR BASKETBALL PLAYERS: A SYSTEMATIC REVIEW

2021 ◽  
Author(s):  
Małgorzata Jekiełek ◽  
Angelika Sosulska ◽  
Grzegorz Mańko ◽  
Jarosław Jaszczur-Nowick
Keyword(s):  
Upper Limb ◽  
Basketball Player ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
Search Terms ◽  
Large Numbers ◽  
The Disabled ◽  
Upper Limb Pain

Sport of the disabled has been becoming more and more popular for several years, and wheelchair basketball is one of the most popular disciplines among the disabled. However, playing sports is connected with the possibility of injuries and pain in people training a given discipline. The aim of this study is to determine the occurrence of injuries and to identify most commonly injuries in athletes practicing basketball in wheelchairs. A literature review was conducted in Embase and Medline PubMed databases. Basic search terms are: shoulder injury OR shoulder pain OR upper limb disease OR upper limb disorders OR upper limb pain AND basketball OR basketball player OR wheelchair sport OR wheelchair user OR wheelchair athlete OR wheelchair basketball OR disabled sport OR disabled persons.Results: 511 non-duplicate results were found. At the stage of the analysis of titles and abstracts, 483 were rejected and 28 were qualified for the analysis of full texts. The review included 2 that met all the criteria. The topic is not discussed in large numbers in the literature and requires further research specifically focused on the prevention of shoulder injury as well as assessment of the risk of damage to individual elements that make up the shoulder joint and surrounding structures.

scholarly journals The Biomechanics of Shoulder Movement with Implications for Shoulder Injury in Table Tennis: A Minireview

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Liang Li ◽  
Feng Ren ◽  
Julien S. Baker
Keyword(s):  
Internal Rotation ◽  
Clinical Treatment ◽  
Table Tennis ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Tennis Players ◽  
Future Studies ◽  
Glenohumeral Internal Rotation Deficit ◽  
Shoulder Movement ◽  
Injury Mechanisms

A high proportion of shoulder injuries in table tennis players are common, which is both a diagnostic and therapeutic challenge. An understanding of the interaction between biomechanical function of the shoulder and mechanisms of shoulder injuries in table tennis players is necessary to prevent injury and to conduct clinical treatment of the shoulder as soon as possible. The purpose of this minireview was to select the available evidence on the biomechanical characteristics of shoulder movement and potential relationships with various shoulder injuries that are common in table tennis players. Five studies revealed interesting biomechanical characteristics of shoulder movement patterns in table tennis players: large internal rotation torque, an increased torsion-rotation movement, and a greater angular velocity of internal rotation were found. Two studies were noted that were related to specific shoulder injury: glenohumeral internal rotation deficit (GIRD) and impingement syndrome. Unfortunately, it is difficult to draw conclusions on the mechanisms of shoulder injury in table tennis players due to the little evidence available that has investigated shoulder injury mechanisms based on biomechanical characteristics. Future studies should focus on the potential relationship between the biomechanical characteristics of the shoulder and injury prevalence to provide valuable reference data for clinical treatment.

scholarly journals Shoulder Injuries in Cricketers

2015 ◽  
Vol 49 (4) ◽  
pp. 194-196
Author(s):  
Sharad Prabhakar ◽  
Radhakant Pandey
Keyword(s):  
Rotator Cuff ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Internal Impingement ◽  
Scapular Kinematics ◽  
Glenohumeral Internal Rotation Deficit ◽  
Repetitive Nature ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Very High

ABSTRACT Shoulder injuries are very common in cricketers. Throwing athletes in cricket (both bowlers and fielders) are prone to shoulder injuries secondary to the large amount of forces generated, the resultant very high velocities and the repetitive nature of the throwing action. The shoulder joint has to balance mobility vs stability. Athletes exhibit adaptive changes that develop from the repetitive microtrauma following overhead throwing. The article discusses in detail how altered scapular kinematics, rotator cuff dysfunction with altered muscle strength patterns, internal impingement combined with anatomical adaptive bony and soft tissue changes causing a glenohumeral internal rotation deficit, predispose the cricketer to shoulder injury. How to cite this article Prabhakar S, Pandey R. Shoulder Injuries in Cricketers. J Postgrad Med Edu Res 2015;49(4): 194-196.

scholarly journals Risk Factors Associated With Shoulder Pain and Disability Across the Lifespan of Competitive Swimmers

2012 ◽  
Vol 47 (2) ◽  
pp. 149-158 ◽  
Author(s):  
Angela Tate ◽  
Gregory N. Turner ◽  
Sarah E. Knab ◽  
Colbie Jorgensen ◽  
Andrew Strittmatter ◽  
...  
Keyword(s):  
High School ◽  
Shoulder Pain ◽  
Age Groups ◽  
Muscle Length ◽  
Scapular Dyskinesis ◽  
Shoulder Injuries ◽  
Shoulder Injury ◽  
Cross Sectional ◽  
Pectoralis Minor ◽  
Competitive Swimmers

Context: The prevalence of shoulder pain among competitive swimmers is high, but no guidelines exist to reduce shoulder injuries. Elucidating differences between swimmers with and without shoulder pain can serve as a basis for the development of a program to prevent shoulder injury that might lead to pain and dysfunction. Objective: To determine whether physical characteristics, exposure, or training variables differ between swimmers with and without shoulder pain or disability. Design: Cross-sectional study. Setting: Multisite swimming centers. Patients or Other Participants: A total of 236 competitive female swimmers aged 8 to 77 years. Data Collection and Analysis: Participants completed the Penn Shoulder Score and underwent testing of core endurance, range of motion, muscle force production, and pectoralis minor muscle length and the Scapular Dyskinesis Test. Swimmers were grouped by age for analysis: ages 8 to 11 years (n = 42), 12 to 14 years (n = 43), 15 to 19 years (high school, n = 84), and 23 to 77 years (masters, n = 67). Comparisons were made between groups with and without pain and disability using independent t tests for continuous data and χ2 analyses and Fisher exact tests for categorical data. Results: Nine (21.4%) swimmers aged 8 to 11 years, 8 (18.6%) swimmers aged 12 to 14 years, 19 (22.6%) high school swimmers, and 13 (19.4%) masters swimmers had shoulder pain and disability. Differences that were found in 2 or more age groups between athletes with and without shoulder pain and disability included greater swimming exposure, a higher incidence of previous traumatic injury and patient-rated shoulder instability, and reduced participation in another sport in the symptomatic groups (P &lt; .05). Reduced shoulder flexion motion, weakness of the middle trapezius and internal rotation, shorter pectoralis minor and latissimus, participation in water polo, and decreased core endurance were found in symptomatic females in single varying age groups (P &lt; .05). Conclusions: Female competitive swimmers have shoulder pain and disability throughout their lives. Given that exposure and physical examination findings varied between athletes with and without substantial pain and disability, a program to prevent shoulder injury that might lead to pain and dysfunction appears warranted and might include exposure reduction, cross-training, pectoral and posterior shoulder stretching, strengthening, and core endurance training.

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