The association between the isokinetic muscle strength and lower extremity injuries in young male football players

2019 ◽  
Vol 39 ◽  
pp. 76-81
Author(s):  
Parisa Namazi ◽  
Mostafa Zarei ◽  
Fariborz Hovanloo ◽  
Hamed Abbasi
Keyword(s):  
Muscle Strength ◽  
Lower Extremity ◽  
Young Male ◽  
Football Players ◽  
Lower Extremity Injuries ◽  
Isokinetic Muscle Strength ◽  
Extremity Injuries

Do Single-Leg Balance Control and Lower Extremity Muscle Strength Correlate with Ankle Instability and Leg Injuries in Young Ballet Dancers?

2021 ◽  
Author(s):  
You-jou Hung ◽  
Jenna Boehm ◽  
Morgan Reynolds ◽  
Kallee Whitehead ◽  
Kaylyn Leland
Keyword(s):  
Muscle Strength ◽  
Lower Extremity ◽  
Ankle Instability ◽  
Balance Control ◽  
Functional Ankle Instability ◽  
Lower Extremity Injuries ◽  
Ballet Dancers ◽  
Leg Injuries ◽  
Lower Extremity Muscle ◽  
Extremity Injuries

Ankle injuries are common among young ballet dancers. These injuries may be attributed to ankle instability, insufficient lower extremity strength, and poor balance control. The purpose of this study was to explore whether these dancers exhibit functional ankle instability and if their single-leg balance control and lower extremity muscle strength correlate with functional ankle instability and leg injuries. Twenty-one ballet dancers (aged 10 to 17 years) participated in the study. The Cumberland Ankle Instability Tool (CAIT) questionnaire was used to examine functional ankle stability. Isometric muscle strength of the major lower extremity muscles was measured with a digital hand-held dynamometer. Single-leg balance was evaluated with the Y-Balance Test (YBT) and three Athletic Single-leg Stability Test (ASLST) protocols. Lower extremity injuries (self-reported) within 6 months after testing were recorded for correlation analyses. Both dominant and non-dominant ankles of the subjects exhibited functional ankle instability (26.71 and 25.71, respectively). Raising the center of mass (passé and first arm position) during the ASLST did not significantly affect balance performance (p = 0.104). However, removing extrinsic visual feedback significantly decreased single-leg balance (p < 0.001). In general, there was low correlation (r ≤ 0.49) between muscle strength, CAIT, YBT, and ASLST scores with lower extremity injuries. It is concluded that for young ballet dancers lower extremity muscle strength and single-leg balance control may not be strong contributing factors to leg injuries. This study also suggests that functional ankle stability may not have a direct impact on single-leg balance, and ballet dancers rely heavily on extrinsic visual feedback for single-leg balance control. Teachers might consider minimizing extrinsic feedback to challenge ballet dancers when implementing training protocols for single-leg balance control.

Proprioception is not associated with lower extremity injuries in U21 high-level football players

2019 ◽  
Vol 20 (6) ◽  
pp. 839-844
Author(s):  
Parisa Namazi ◽  
Mostafa Zarei ◽  
Hamed Abbasi ◽  
Fariborz Hovanloo ◽  
Nikki Rommers ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Football Players ◽  
Lower Extremity Injuries ◽  
Extremity Injuries ◽  
High Level

scholarly journals Functional Return to Play after Surgical Treatment of Lower-Extremity Injuries using Global Positioning System Profiles in Elite College Football Players

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0004
Author(s):  
Norman Waldrop ◽  
Lyle Cain ◽  
Benton Emblom ◽  
Michael Ryan
Keyword(s):  
Surgical Treatment ◽  
Lower Extremity ◽  
Return To Sport ◽  
Return To Play ◽  
Football Players ◽  
Lower Extremity Injuries ◽  
Global Positioning ◽  
Data Points ◽  
Extremity Injuries ◽  
Functional Movements

Category: Sports Introduction/Purpose: Return to sport criteria after surgical treatment of lower extremity injuries are highly variable and without consensus. Thigh measurements assessing atrophy, single-leg hop testing and isokinetic strength measurements are commonly used metrics when considering return to sport after surgical treatment of lower-extremity injuries. Yet, these modalities are limited in scope, as they do not fully or accurately evaluate functional movements required in elite athletics. Alternatively, using new Global Positioning System (GPS) technology, a wide breadth of functional movements can be tracked for each athlete, which can be used as a comparative self-control in the event of an injury. This data proposes a more comprehensive, dynamic and longitudinal comparison of athlete performance, which may more accurately reflect functional return to sport in elite athletes after surgery. Methods: Over a three-year period, GPS data was collected on thirteen elite American College Football players at a single FBS Subdivision University. A total of 300 data points per athlete were collected for every practice, scrimmage and game starting in spring prep and extending through regular season, and post-season play. A total of 5.7 million data points including total distance traveled, average and maximum velocity, acceleration profiles, and explosive change of direction through inertial movement analysis were prospectively collected and analyzed. Individual pre-injury GPS functional profiles for each of the thirteen athletes were used as baseline, healthy comparisons, and functional recovery was determined prospectively during return to play progression after lower extremity surgery. Return to sport was allowed when post-operative GPS profiles demonstrated equivalence or superiority of all parameters compared to pre-injury measurements. Results: All thirteen players returned to sport after all measured parameters were equal to or greater than pre-injury levels. Conclusion: Modern GPS technology employed during preseason, regular season and post-season establishes an individualized, baseline, profile of lower-extremity function which allows for postoperative comparison and prospective assessment of safe return to play in elite football players.

RISK FACTORS FOR LOWER EXTREMITY INJURIES IN ELITE FEMALE FOOTBALL PLAYERS

2014 ◽  
Vol 48 (7) ◽  
pp. 645.1-645
Author(s):  
A Nilstad ◽  
TE Andersen ◽  
R Bahr ◽  
IM Holme ◽  
K Steffen
Keyword(s):  
Risk Factors ◽  
Lower Extremity ◽  
Football Players ◽  
Lower Extremity Injuries ◽  
Extremity Injuries

Injuries in Austrian football players: Are they an issue?

2018 ◽  
Vol 33 (01) ◽  
pp. 43-50
Author(s):  
Felix Fischer ◽  
Christian Hoser ◽  
Cornelia Blank ◽  
Wolfgang Schobersberger ◽  
Caroline Hepperger ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Consensus Statement ◽  
Football Players ◽  
Muscle Injuries ◽  
Match Play ◽  
Lower Extremity Injuries ◽  
Risk Of Injury ◽  
Significant Difference ◽  
Load Characteristics ◽  
Extremity Injuries

Abstract Purpose and Hypothesis With its load characteristics, the team sport of football places high physical demands on players and thus is associated with a high risk of injury. Therefore, the purpose of this study was to collect information about injuries suffered by football players in Austria during training or matches to enable participating clubs to learn about injuries. Methods One hundred and forty-five players from seven teams with age ranging from 16 to 38 years participated in this prospective study during the 2015/16 season. Injury surveillance was conducted according to the consensus statement of Fuller et al. (2006). Results During the period of study, a total of 83 injuries were recorded, which represents an overall incidence of 4.5 injuries/1000 hours (2.3 injuries/1000 hours in training and 14.2 injuries/1000 hours of match play). There was a significant difference for older age in injured players compared to non-injured players (p = 0.019). No differences in BMI were detected (p = 0.427). Ninety-four percent of all injuries occurred in the lower extremity, with the thigh (25.8 %), ankle (19.3 %) and knee (13.3 %) being the major locations of injuries. Muscle tendon injuries were the most common non-contact injuries (78.9 %). Conclusion Lower extremity injuries are the most common injury in Austrian football. The incidence of muscle injuries is high, especially injuries of the posterior thigh. There are promising preventive strategies for the most common injury types. The implementation of these strategies is essential in order to reduce the incidence or recurrence of these football injuries.

The functional movement test 9+ is a poor screening test for lower extremity injuries in professional male football players: a 2-year prospective cohort study

2017 ◽  
Vol 52 (16) ◽  
pp. 1047-1053 ◽  
Author(s):  
Arnhild Bakken ◽  
Stephen Targett ◽  
Tone Bere ◽  
Cristiano Eirale ◽  
Abdulaziz Farooq ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Injury Risk ◽  
Cox Regression ◽  
Area Under The Curve ◽  
Lower Extremity Injury ◽  
Football Players ◽  
Roc Curve Analysis ◽  
Functional Movement ◽  
Lower Extremity Injuries ◽  
Extremity Injuries

BackgroundThe 9+ screening battery test consists of 11 tests to assess limitations in functional movement.AimTo examine the association of the 9+ with lower extremity injuries and to identify a cut-off point to predict injury risk.MethodsProfessional male football players in Qatar from 14 teams completed the 9+ at the beginning of the 2013/2014 and 2014/2015 seasons. Time-loss injuries and exposure in training and matches were registered prospectively by club medical staff during these seasons. Univariate and multivariate Cox regression analyses were used to calculate HR and 95% CI. Receiver operating characteristic (ROC) curves were calculated to determine sensitivity and specificity and identify the optimal cut-off point for risk assessment.Results362 players completed the 9+ and had injury and exposure registration. There were 526 injuries among 203 players (56.1%) during the two seasons; injuries to the thigh were the most frequent. There was no association between 9+ total score and the risk of lower extremity injuries (HR 1.02, 95% CI 0.99 to 1.05, p=0.13), even after adjusting for other risk factors in a multivariate analysis (HR 1.01, 95% CI 0.98 to 1.04, p=0.37). ROC curve analysis revealed an area under the curve of 0.48, and there was no cut-off point that distinguished injured from non-injured players.ConclusionThe 9+ was not associated with lower extremity injury, and it was no better than chance for distinguishing between injured and uninjured players. Therefore, the 9+ test cannot be recommended as an injury prediction tool in this population.

Muscle Strength Is a Poor Screening Test for Predicting Lower Extremity Injuries in Professional Male Soccer Players: A 2-Year Prospective Cohort Study

2018 ◽  
Vol 46 (6) ◽  
pp. 1481-1491 ◽  
Author(s):  
Arnhild Bakken ◽  
Stephen Targett ◽  
Tone Bere ◽  
Cristiano Eirale ◽  
Abdulaziz Farooq ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Lower Extremity ◽  
Screening Test ◽  
Peak Torque ◽  
Soccer Players ◽  
Thigh Muscle ◽  
Lower Extremity Injuries ◽  
Lower Extremity Muscle ◽  
Strength Tests ◽  
Extremity Injuries

Background: Lower extremity muscle strength tests are commonly used to screen for injury risk in professional soccer. However, there is limited evidence on the ability of such tests in predicting future injuries. Purpose: To examine the association between hip and thigh muscle strength and the risk of lower extremity injuries in professional male soccer players. Study Design: Case-control study; Level of evidence, 3. Methods: Professional male soccer players from 14 teams in Qatar underwent a comprehensive strength assessment at the beginning of the 2013/2014 and 2014/2015 seasons. Testing consisted of concentric and eccentric quadriceps and hamstring isokinetic peak torques, eccentric hip adduction and abduction forces, and bilateral isometric adductor force (squeeze test at 45°). Time-loss injuries and exposure in training and matches were registered prospectively by club medical staff throughout each season. Univariate and multivariate Cox regression analyses were used to calculate hazard ratios (HRs) with 95% CIs. Results: In total, 369 players completed all strength tests and had registered injury and exposure data. Of these, 206 players (55.8%) suffered 538 lower extremity injuries during the 2 seasons; acute muscle injuries were the most frequent. Of the 20 strength measures examined, greater quadriceps concentric peak torque at 300 deg/s (HR, 1.005 [95% CI, 1.00-1.01]; P = .037) was the only strength measure identified as significantly associated with a risk of lower extremity injuries in multivariate analysis. Greater quadriceps concentric peak torque at 60 deg/s (HR, 1.004 [95% CI, 1.00-1.01]; P = .026) was associated with the risk of overuse injuries, and greater bilateral adductor strength adjusted for body weight (HR, 0.75 [95% CI, 0.57-0.97; P = .032) was associated with a lower risk for any knee injury. Receiver operating characteristic curve analyses indicated poor predictive ability of the significant strength variables (area under the curve, 0.45-0.56). Conclusion: There was a weak association with the risk of lower extremity injuries for 2 strength variables: greater quadriceps concentric muscle strength at (1) high and (2) low speeds. These associations were too small to identify an “at-risk” player. Therefore, strength testing, as performed in the present study, cannot be recommended as a screening test to predict injuries in professional male soccer.

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