scholarly journals Analysis of Player Statistics in Major League Baseball Players before and after Achilles Tendon Repair

2018 ◽  
Vol 14 (2) ◽  
pp. 222-222
Author(s):  
Deniz Can Ince
Keyword(s):  
Achilles Tendon ◽  
Major League Baseball ◽  
Tendon Repair ◽  
Baseball Players ◽  
Achilles Tendon Repair ◽  
Major League ◽  
Before And After

scholarly journals Analysis of Player Statistics in Major League Baseball Players Before and After Achilles Tendon Repair

2017 ◽  
Vol 13 (2) ◽  
pp. 108-118 ◽  
Author(s):  
Bryan M. Saltzman ◽  
Matthew W. Tetreault ◽  
Daniel D. Bohl ◽  
Danielle Tetreault ◽  
Simon Lee ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Major League Baseball ◽  
Tendon Repair ◽  
Baseball Players ◽  
Achilles Tendon Repair ◽  
Major League ◽  
Before And After

scholarly journals Analysis of Player Statistics in Major League Baseball Players Before and After Achilles Tendon Repair

2018 ◽  
Vol 14 (2) ◽  
pp. 223-224 ◽  
Author(s):  
Bryan M. Saltzman ◽  
Matthew W. Tetreault ◽  
Daniel D. Bohl ◽  
Danielle Tetreault ◽  
Simon Lee ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Major League Baseball ◽  
Tendon Repair ◽  
Baseball Players ◽  
Achilles Tendon Repair ◽  
Major League ◽  
Before And After

scholarly journals There is a high return to sport rate but with reduced career lengths after Achilles tendon repair in Major League Soccer players

2019 ◽  
Vol 4 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Kyle R Sochacki ◽  
Robert A Jack II ◽  
Takashi Hirase ◽  
Patrick C McCulloch ◽  
David M Lintner ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Tendon Repair ◽  
Return To Sport ◽  
Level Of Evidence ◽  
Postoperative Performance ◽  
Achilles Tendon Repair ◽  
Major League Soccer ◽  
Major League ◽  
And Performance

ObjectivesTo determine (1) return to sport (RTS) rate in Major League Soccer (MLS) players following Achilles tendon repair, (2) postoperative career length and games per season, (3) preoperative and postoperative performance, and (4) postoperative performance compared with control players matched by position, age, body mass index, sex, years of experience and performance.MethodsPublicly available records were used to identify MLS players who underwent Achilles tendon repair with a minimum of 1 year follow-up. Demographic and performance data were collected for each player. Matched controls were identified. RTS was defined as playing in one or more MLS games after surgery. Comparisons between case and control groups and preoperative and postoperative time points were made using paired sample Student’s t-tests.ResultsTwenty-two players (mean age 28.4±4.0 years; mean 3.0±2.2 years follow-up) and 23 Achilles tendon repairs (one bilateral repair) were analysed. Seventeen players (18 Achilles tendon repairs; 77.3%) were able to RTS in the MLS at mean 306.6±199.2 days. Players who RTS after repair had shorter careers than matched controls (2.5±2.2 vs 4.5±3.0 seasons, respectively; p=0.021). Additionally, players who RTS after repair played in fewer games per season than matched controls (13.4±8.4 vs 23.2±6.5, respectively; p<0.001). There was no significant decrease in performance postsurgery compared with presurgery.ConclusionThere is a 77.3% RTS rate in the MLS following Achilles tendon repair. Following repair, players had shorter careers and played fewer games per season than matched controls. There was no significant decrease in performance postsurgery compared with presurgery nor in postsurgery compared with postindex. A significantly greater number of Achilles tendon tears occurred in the left versus the right lower extremity.Level of evidenceLevel III.

scholarly journals Concussion Incidence and Impact on Player Performance in Major League Baseball Players Before and After a Standardized Concussion Protocol

2020 ◽  
Vol 8 (4) ◽  
pp. 232596712091302 ◽  
Author(s):  
Joshua G. Peterson ◽  
Vehniah K. Tjong ◽  
Michael A. Terry ◽  
Matthew D. Saltzman ◽  
Stephen M. Gryzlo ◽  
...  
Keyword(s):  
Major League Baseball ◽  
Negative Effects ◽  
Level Of Evidence ◽  
Baseball Players ◽  
Subsequent Performance ◽  
Major League ◽  
Before And After ◽  
The Disabled ◽  
And Performance ◽  
Player Performance

Background: Sports-related concussions have garnered significant attention in recent years because of the negative effects they can have on a player’s cognitive health and performance. In response to this growing concern, Major League Baseball (MLB) introduced a standardized concussion protocol during the 2011-2012 season. Purpose/Hypothesis: The purpose of this study was to compare the reported incidence of concussions and the subsequent performance of MLB players before and after the introduction of the standardized concussion protocol. We hypothesized that the introduction of the standardized concussion protocol would not have an impact on player performance postconcussion. Study Design: Cohort study; Level of evidence, 3. Methods: Players who suffered a concussion between 2001 and 2018 were identified from the MLB transactions page. Incidence and player performance were compared before and after the introduction of the standardized concussion protocol. Player performance was evaluated using traditional data and sabermetric data, which are advanced statistics used in conjunction with standard statistics to better compare players and teams. Player averages were calculated and compared using paired t tests for 30 days before and after concussion, 1 year before and after concussion, and career before and after concussion. Averages were also compared before and after the institution of the standardized concussion protocol using independent-measures t tests. Results: There were a total of 114 players who suffered 142 concussions, with 77% of those occurring after the introduction of the concussion protocol (32 before, 110 after). The average time missed because of concussion significantly decreased from 33.7 days (range, 10-122 days) to 18.9 days (range, 6-111 days) after the concussion protocol ( P = .0005). There was no difference in player performance (including batting average, on-base percentage, and slugging for batters; earned run average, fielding-independent pitching, and walks plus hits per inning pitched for pitchers) after concussion at any time point (30 days, 1 year, or career) when comparing these statistics before versus after the MLB concussion protocol. However, batter performance was significantly poorer 1 year after concussion and over the remainder of the players' careers ( P < .05). Conclusion: The number of reported concussions increased after the introduction of the MLB concussion protocol. However, players spent significantly less time on the disabled list without any adverse effect on player performance. Despite these changes, long-term batting performance was significantly poorer after concussion.

scholarly journals Lower Extremity Biomechanics Predicts Major League Baseball Player Performance

2021 ◽  
Vol 9 (7) ◽  
pp. 232596712110152
Author(s):  
Lucas G. Teske ◽  
Edward C. Beck ◽  
Garrett S. Bullock ◽  
Kristen F. Nicholson ◽  
Brian R. Waterman
Keyword(s):  
Lower Extremity ◽  
Major League Baseball ◽  
Reaction Force ◽  
Regression Trees ◽  
Minimal Detectable Change ◽  
Vertical Force ◽  
Baseball Players ◽  
Major League ◽  
Lower Extremity Biomechanics ◽  
Statistical Metrics

Background: Although lower extremity biomechanics has been correlated with traditional metrics among baseball players, its association with advanced statistical metrics has not been evaluated. Purpose: To establish normative biomechanical parameters during the countermovement jump (CMJ) among Major League Baseball (MLB) players and evaluate the relationship between CMJ-developed algorithms and advanced statistical metrics. Study Design: Cohort study; Level of evidence, 3. Methods: MLB players in 2 professional organizations performed the CMJ at the beginning of each baseball season from 2013 to 2017. We collected ground-reaction force data including the eccentric rate of force development (“load”), concentric vertical force (“explode”), and concentric vertical impulse (“drive”) as well as the Sparta Score. The advanced statistical metrics from each baseball season (eg, fielding independent pitching [FIP], weighted stolen base runs [wSB], and weighted on-base average) were also gathered for the study participants. The minimal detectable change (MDC) was calculated for each CMJ variable to establish normative parameters. Pearson coefficient analysis and regression trees were used to evaluate associations between CMJ data and advanced statistical metrics for the players. Results: A total of 151 pitchers and 138 batters were included in the final analysis. The MDC for “load,” “explode,” “drive,” and the Sparta Score was 10.3, 8.1, 8.7, and 4.6, respectively, and all demonstrated good reliability (intraclass correlation coefficient > 0.75). There was a weak but statistically significant correlation between the Sparta Score and wSB ( r = 0.23; P = .007); however, there were no significant correlations with any other advanced metrics. Regression trees demonstrated superior FIP with higher Sparta Scores in older pitchers compared with younger pitchers. Conclusion: There was a positive but weak correlation between the Sparta Score and base-stealing performance among professional baseball players. Additionally, older pitchers with a higher Sparta Score had statistically superior FIP compared with younger pitchers with a similar Sparta Score after adjusting for age.

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