The Relationship of Periscapular Strength on Scapular Upward Rotation in Professional Baseball Pitchers

2008 ◽  
Vol 17 (2) ◽  
pp. 95-105 ◽  
Author(s):  
Kevin G. Laudner ◽  
Justin M. Stanek ◽  
Keith Meister
Keyword(s):  
Athletic Performance ◽  
Descriptive Study ◽  
Professional Baseball ◽  
Serratus Anterior ◽  
Baseball Players ◽  
Overhead Athletes ◽  
Baseball Pitchers ◽  
Lower Trapezius ◽  
Relationship Of ◽  
The Relationship

Context:Deficiencies in scapular upward rotation and periscapular strength have been associated with various shoulder pathologies and decreased athletic performance. Therefore, proper periscapular strength and concomitant scapular upward rotation are important factors among overhead athletes, such as baseball players.Objective:To assess the relationships between lower trapezius and serratus anterior strength and the quantity of scapular upward rotation.Design:Descriptive study.Setting:Laboratory.Participants:24 professional baseball pitchers.Measures:Scapular upward rotation was measured at 0°, 60°, 90°, and 120° of humeral elevation. The maximum isometric strength of the lower trapezius and serratus anterior were measured.Results:There was a moderate-good positive relationship between lower trapezius strength and scapular upward rotation at 90° (r2 = .56, P = .001) and 120° (r2 = .53, P = .001). The relationships between scapular upward rotation and serratus anterior strength were all poor.Conclusion:A moderate-good relationship existed between lower trapezius strength and scapular upward rotation.

The Relationship of Throwing Arm Mechanics and Elbow Varus Torque: Within-Subject Variation for Professional Baseball Pitchers Across 82,000 Throws

2017 ◽  
Vol 45 (13) ◽  
pp. 3030-3035 ◽  
Author(s):  
Christopher L. Camp ◽  
Travis G. Tubbs ◽  
Glenn S. Fleisig ◽  
Joshua S. Dines ◽  
David M. Dines ◽  
...  
Keyword(s):  
Professional Baseball ◽  
Baseball Pitchers ◽  
Relationship Of ◽  
The Relationship

scholarly journals The Relationship of Throwing Arm Mechanics and Elbow Varus Torque: Within-subject Variation for Professional Baseball Pitchers Across 81,999 Throws

2017 ◽  
Vol 5 (7_suppl6) ◽  
pp. 2325967117S0037
Author(s):  
Joshua S. Dines ◽  
Travis Tubbs ◽  
Glenn S. Fleisig ◽  
David M. Dines ◽  
David W. Altchek ◽  
...  
Keyword(s):  
Professional Baseball ◽  
Baseball Pitchers ◽  
Relationship Of ◽  
The Relationship

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.

Significant Elements in the Relationship of Long-Married Couples

1980 ◽  
Vol 10 (3) ◽  
pp. 265-272 ◽  
Author(s):  
William L. Roberts
Keyword(s):  
Life Satisfaction ◽  
Random Sample ◽  
Marital Adjustment ◽  
Married Couples ◽  
Descriptive Study ◽  
Sexually Active ◽  
The Past ◽  
Relationship Of ◽  
Perception Of Health ◽  
The Relationship

A descriptive study of factors in the lifestyle of fifty couples married an average of 55.5 years and an average age of seventy-nine years provided data for this report. The non-random sample was heterogeneous using traditional socio-economic indicators. Life-Satisfaction (LSI-Z), Locke-Wallace Marital Adjustment scores, and perception of health were all high. More than half the sample were now or had been sexually active within the past five years. Independence, commitment, companionship and qualities of caring were significant elements in these long-lasting marriages.

scholarly journals Human face structure correlates with professional baseball performance: insights from professional Japanese baseball players

2013 ◽  
Vol 9 (3) ◽  
pp. 20130140 ◽  
Author(s):  
Hikaru Tsujimura ◽  
Michael J. Banissy
Keyword(s):  
Financial Performance ◽  
Professional Baseball ◽  
Human Face ◽  
Sports Performance ◽  
Height Ratio ◽  
Baseball Players ◽  
Daily Lives ◽  
Face Structure ◽  
The Relationship ◽  
Source Of Information

In our daily lives, we use faces as a major source of information about other people. Recent work has begun to highlight how one's facial width-to-height ratio (fWHR) is linked to a number of behaviours (e.g. deception, aggression and financial performance in firms). fWHR has also been linked to several factors that may be beneficial for sport (e.g. achievement drive, winning mentality and aggression). Despite this, few studies have examined the relationship between fWHR and sports performance, and these have focused on Caucasian sportsmen. Here, we investigated the relationship between fWHR and baseball performance in professional Japanese baseball players. We show that fWHR is positively related with home run performance across two consecutive seasons. The findings provide the first evidence linking fWHR to baseball performance and linking fWHR to behavioural outcomes in Asian participants.

Rejection, Motivation and Athletic Performance: Is There a Traded Player Syndrome?

1977 ◽  
Vol 45 (3) ◽  
pp. 827-834
Author(s):  
Richard E. Kopelman ◽  
James J. Pantaleno
Keyword(s):  
Athletic Performance ◽  
Professional Baseball ◽  
High Ability ◽  
Professional Athlete ◽  
Entire Sample ◽  
Baseball Players ◽  
First Time ◽  
Positive Results ◽  
Over Time

It is widely held that the professional athlete who is traded tends to perform better against the trading team than against other teams. Two psychological explanations for this hypothesis were advanced (a separation-hostility mechanism and an esteem loss-counteraction mechanism). Data were examined for 47 (30) professional baseball players over a 2-yr. (3-yr.) period. Support for the hypothesis was weak across the entire sample; however, some support appeared among players who (a) were traded for the first time, (b) had long tenure with the trading team, (c) were young, and (d) had high ability. Somewhat stronger positive results were found for individuals who met two or more of the conditions favorable to the hypothesis. As predicted, results attenuated over time.

scholarly journals Single-Session Video and Electromyography Feedback in Overhead Athletes With Scapular Dyskinesis and Impingement Syndrome

2020 ◽  
Vol 55 (3) ◽  
pp. 265-273
Author(s):  
Wan-Yu Du ◽  
Tsun-Shun Huang ◽  
Yuan-Chun Chiu ◽  
Szu-Jieh Mao ◽  
Li-Wei Hung ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Training Group ◽  
Video Feedback ◽  
Emg Biofeedback ◽  
Scapular Dyskinesis ◽  
Serratus Anterior ◽  
Overhead Athletes ◽  
Feedback Training ◽  
Scapular Kinematics ◽  
Lower Trapezius

Context Subacromial impingement syndrome (SIS) is associated with scapular dyskinesis, or imbalanced scapular muscle activity. Evidence has shown that feedback can improve scapular control in patients with SIS. However, it is unknown whether real-time video feedback or electromyography (EMG) biofeedback is optimal for improving scapular kinematics and muscle activity during a functional task. Objective To compare the effects of video and EMG feedback sessions on absolute muscle activity (upper trapezius [UT], lower trapezius [LT], serratus anterior), muscle balance ratios (UT/LT, UT/serratus anterior), and scapular kinematics (anterior-posterior tilt, external-internal rotation, upward rotation) in SIS participants during arm elevation and lowering. Design Randomized controlled clinical trial. Setting Research laboratory. Patients or Other Participants Overhead athletes who were diagnosed with SIS and who also exhibited scapular dyskinesis (N = 41). Main Outcome Measure(s) Three-dimensional kinematics and EMG were recorded before and after feedback training. Results Lower trapezius muscle activity increased (4.2%–18%, P < .011) and UT/LT decreased (0.56–1.17, P < .013) in the EMG biofeedback training group as compared with those in the video feedback training group. Scapular upward rotation during arm elevation was higher in the video group than in the EMG group after feedback training (2.3°, P = .024). Conclusions The EMG biofeedback improved muscle control and video feedback improved the correction of scapular upward rotation in patients with SIS. Trial Registration Number ClinicalTrials.gov: NCT03252444.

scholarly journals Comparison of Outcomes Based on Graft Type and Tunnel Configuration for Primary Ulnar Collateral Ligament Reconstruction in Professional Baseball Pitchers

2019 ◽  
Vol 47 (5) ◽  
pp. 1103-1110 ◽  
Author(s):  
Timothy B. Griffith ◽  
Christopher S. Ahmad ◽  
Prakash Gorroochurn ◽  
John D’Angelo ◽  
Michael G. Ciccotti ◽  
...  
Keyword(s):  
Ulnar Collateral Ligament ◽  
Return To Play ◽  
Professional Baseball ◽  
Reconstruction Technique ◽  
Collateral Ligament ◽  
Baseball Players ◽  
Palmaris Longus ◽  
Elbow Injuries ◽  
Elbow Surgery ◽  
Baseball Pitchers

Background: Professional baseball pitchers are at high risk for tears of the ulnar collateral ligament (UCL) of the elbow, often requiring surgical reconstruction. Despite acceptable published return-to-play outcomes, multiple techniques and graft types have been described. Purpose: This study compares UCL reconstruction (UCLR) outcomes based on tunnel configuration and graft type. Study Design: Cohort study; Level of evidence, 3. Methods: After approval from our institutional review board and Major League Baseball (MLB), 566 professional baseball pitchers who underwent UCLR between 2010 and 2014 were identified and included. The following patient characteristics were analyzed: age, pitching role (starter vs reliever), level of play (MLB vs Minor League Baseball [MiLB]), and throwing side dominance. Surgical factors analyzed included reconstruction technique, graft type, and concomitant procedures. Primary outcome measures consisted of the ability to return to play at any level (RTP), ability to return to the same level of play (RSL), time to return, subsequent elbow injuries, and need for subsequent or revision elbow surgery. The effects of patient and surgical factors on outcomes were analyzed using multivariate linear and logistic regression modeling. Results: The RTP rate was 79.9%, and the RSL rate was 71.2%. Grafts used to reconstruct the UCL included the palmaris longus autograft (n = 361, 63.7%), the gracilis autograft (n = 135, 23.8%), and other grafts (n = 70, 12.5%). Surgical techniques utilized were the docking technique (n = 171, 30.2%), the modified Jobe technique (n = 290, 51.2%), and other techniques (n = 105, 18.6%). There were no significant differences in the time to RTP or RSL based on reconstruction technique or graft type. RTP rates were similar for the docking versus modified Jobe technique (80.1% vs 82.4%, respectively; P = .537) and for the 2 primary graft types (83.1% for palmaris longus vs 80.7% for gracilis; P = .596). The rate of subsequent elbow surgery was 10.5% for the docking technique versus 14.8% for the modified Jobe technique ( P = .203), and the rate of revision UCLR was 2.9% versus 6.2% for the docking versus modified Jobe technique, respectively ( P = .128). Significant trends toward an increasing use of the palmaris longus autograft ( P = .023) and the docking technique ( P = .006) were observed. MLB pitchers were more likely than MiLB pitchers to RTP ( P < .001) and RSL ( P < .001), but they required a longer time to return (mean difference, 35 days; P = .039) and had a higher likelihood of subsequent elbow (odds ratio [OR], 3.58 [95% CI, 2.06-6.23]; P < .001) and forearm injuries (OR, 5.70 [95% CI, 1.99-16.30]; P = .004) but not subsequent elbow surgery. No specific variables correlated with the rates of subsequent elbow surgery or revision UCLR in the multivariate analysis. The use of concomitant ulnar nerve transposition did not affect outcomes. Conclusion: Surgical outcomes in professional baseball players are not significantly influenced by UCLR technique or graft type. There was a high rate (46.3%) of subsequent throwing elbow injuries. MLB pitchers were more likely to RTP and RSL, but they had a higher frequency of subsequent elbow and forearm injuries than MiLB pitchers. Both the docking technique and the palmaris longus autograft are increasing in popularity among surgeons treating professional baseball players.

scholarly journals Comparison of Outcomes Based on Graft Type and Tunnel Configuration for Primary Ulnar Collateral Ligament Reconstruction in Professional Baseball Pitchers

2018 ◽  
Vol 6 (7_suppl4) ◽  
pp. 2325967118S0008
Author(s):  
Timothy B. Griffith ◽  
Christopher S. Ahmad ◽  
Michael G. Ciccotti ◽  
John D’Angelo ◽  
Joshua S. Dines ◽  
...  
Keyword(s):  
Ligament Reconstruction ◽  
Ulnar Collateral Ligament ◽  
Return To Play ◽  
Professional Baseball ◽  
Reconstruction Technique ◽  
Collateral Ligament ◽  
Baseball Players ◽  
Elbow Surgery ◽  
Baseball Pitchers ◽  
Ulnar Collateral Ligament Reconstruction

Objectives: Professional baseball pitchers are at high risk for tears of the ulnar collateral ligament (UCL) of the elbow, often requiring subsequent surgical reconstruction. Despite acceptable published return to play outcomes, multiple techniques and graft types have been described. There is a paucity of clinical data in the current literature comparing UCL reconstruction surgical technique and graft type. Even less is known about the risks for subsequent injury, surgery, or revision UCL reconstruction. Accordingly, this study compares UCL reconstruction outcomes based on tunnel configuration and graft type. Methods: Following approval from our institutional review board and Major League Baseball (MLB), 566 professional baseball pitchers who underwent UCL reconstruction between 2010 and 2014 were identified and included. The following patient demographics were analyzed: age, pitching role (starter vs. reliever), level of play (MLB vs. Minor League Baseball [MiLB]), and throwing side dominance. Surgical factors analyzed included reconstruction technique (Docking vs. Modified Jobe), graft type (palmaris longus autograft vs. gracilis autograft), and concomitant procedures. Primary outcome measures consisted of: the ability to return to play at any level (RTP), to return to the same level of play (RSL), the time to return, subsequent elbow injuries, and the need for subsequent or revision elbow surgery. The impact of the patient and surgical factors on outcomes were analyzed using multivariate linear and logistic regression modeling. Results: The overall RTP was 79.9% and RSL was 71.2%. There were no significant differences in the time to RTP or RSL based on reconstruction technique or graft type. RTP rates were similar for the Docking vs. Modified Jobe techniques (80.1% vs. 82.4%; p=0.537) and for the two primary graft types (83.1% for palmaris vs. 80.7% for gracilis; p=0.596). The risk of subsequent elbow surgery was 10.5% for the Docking Technique vs. 14.8% for the Modified Jobe (p=0.203); and the risk for subsequent UCL revision reconstruction surgery was 2.9% vs. 6.2% for the Docking vs. Modified Jobe Techniques, respectively (p=0.128). Significant trends towards an increasing use of palmaris autograft (p=0.023) and the docking technique (p=0.006) were observed. MLB pitchers were more likely than MiLB pitchers to RTP (p<0.001) and to RSL (p<0.001), but they required a longer time to return (mean difference 35 days; p=0.039), had a higher likelihood of subsequent elbow (OR 3.58; 95% CI 2.055 to 6.231; p<0.001) and forearm injuries (OR 5.695; 95% CI 1.99 to 16.302; p=0.004), but not subsequent elbow surgery. No specific variables were noted to be predictive of subsequent elbow or revision surgery in the multivariate analysis. Conclusion: Surgical outcomes in professional baseball players are not significantly influenced by ulnar collateral ligament reconstruction technique or graft type usage. Major League players are more likely to RTP and RSL, but they have a higher frequency of subsequent elbow and forearm injuries. Both the Docking Technique and palmaris autograft are increasing in popularity amongst surgeons treating professional baseball players.

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