No association between static and dynamic postural control and ACL injury risk among female elite handball and football players: a prospective study of 838 players (original) (raw)
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Establishing Normative Dynamic Postural Control Values in Elite Female Handball Players
International Journal of Sports Physical Therapy
Background Lower extremity injuries among young female handball players are very common. The modified Star Excursion Balance Test (mSEBT) is a valid clinical tool to assess dynamic postural control and identify athletes with higher risk of injury. However, its interpretation is difficult since performance on this test is highly sport dependent. No normative values on the mSEBT exist in handball. Purpose The aim of this investigation was to establish normative ranges of mSEBT performance in young, healthy female handball players to help practitioners when interpreting risk estimates. Study design Cross-Sectional Study Methods Athletes from 14 elite teams were recruited during a national tournament and performed 3 trials in the anterior (ANT), posteromedial (PM), posterolateral (PL) directions of the mSEBT. Means, standard deviations and 95% confidence intervals (95%CI) of normalized reached distances were calculated for each direction and the composite score (COMP). Level of asymmetr...
Purpose: The objective of this study was to compare the influences of AS and ACLR on static postural control among amateur athletes. Materials and Methods: Ten subjects having ACLR with mean age, height and body mass of (23.9yrs± 4.4yrs), (1.77m ± 0.06m) and (81.6kg ± 12.95kg) respectively, were selected as experimental group I. Another 10 subjects who were injured by AS with mean age, height and body mass of (24.4yrs± 4.4yrs), (1.79m ±0.08m) and (74.63kg ± 11.48kg), respectively were served as experimental group II. Also, 10 able-bodied subjects were selected as control group. A Kistler force plate was used to record the sway of the feet center of pressure (COP) Six different conditions including a) standing on the injured foot, b) standing on the uninjured foot, and c) standing on both feet, in both closed and open eyes conditions were used for balance evaluations. For statistical analysis Repeated Measure (GLM) technique with Tukey post-hoc test and α<0.05 was used. Results: In eyes open condition, COP sway was similar in all groups (p=0.364).Closed eyes resulted in a significant increase in the COP sway which was differently distributed among groups (p = 0.04). This study reveals that ACLR and AS injuries have minimal effects on static standing postural control in eyes open condition. Single-limb standing without visual inputs resulted in a significantly greater COP sway in soccer players with ACLR and AS injuries, implying a proprioception deficit. Postural control on standing over the intact foot showed greater COP sway than that of the injured foot. Conclusion: It is recommended to repeat this study in dynamic conditions to have a better understanding of this issue.
Poor static balance is a risk factor for non-contact anterior cruciate ligament injury
Archives of Orthopaedic and Trauma Surgery, 2018
Background This prospective study aimed to investigate the relationship between static balance and the incidence of noncontact anterior cruciate ligament (ACL) injury in female high school athletes. Methods This study included 276 female high school handball or basketball players. At the time of admission, each subject's static balance was measured with a gravicorder, and the incidence of non-contact ACL injury was investigated in the 3 years until the student graduated. The measured parameters of postural sway were locus length per time (the distance that a center of gravity of the foot pressure moves per second) and environmental area (AR: the area surrounded by the integumentary covering of the trace of the center of gravity). Twenty-seven players (9.8%) experienced an ACL injury during the 3-year observation period. Twenty-four injured players sustained a non-contact injury and three injured players sustained a contact injury. In this study, the three contact injury players were excluded. We compared the differences in the static balance between injured and uninjured players. Results The locus length per time was significantly longer in injured than in uninjured players (p = 0.046). Though there was no statistically significant difference between the two groups in AR (p = 0.190), AR tended to be larger in the ACL injured group. Conclusions This result shows that poor static balance is a risk factor for non-contact ACL injury.
The American journal of sports medicine, 2016
The evidence linking knee kinematics and kinetics during a vertical drop jump (VDJ) to anterior cruciate ligament (ACL) injury risk is restricted to a single small sample. Still, the VDJ test continues to be advocated for clinical screening purposes. To test whether 5 selected kinematic and kinetic variables were associated with future ACL injuries in a large cohort of Norwegian female elite soccer and handball players. Furthermore, we wanted to assess whether the VDJ test can be recommended as a screening test to identify players with increased risk. Cohort study; Level of evidence, 2. Elite female soccer and handball players participated in preseason screening tests from 2007 through 2014. The tests included marker-based 3-dimensional motion analysis of a drop-jump landing. We followed a predefined statistical protocol in which we included the following candidate risk factors in 5 separate logistic regression analyses, with new ACL injury as the outcome: (1) knee valgus angle at i...
International Journal of Sports Physical Therapy, 2020
Background: Decelerating and cutting are two common movements during which non-contact anterior cruciate ligament (ACL) injuries occur in soccer players. Retrospective video analysis of ACL injuries has demonstrated that players are often in knee valgus at the time of injury. Purpose: To determine whether prospectively measured components of valgus collapse during a deceleration and 90° cut can differentiate between collegiate women's soccer players who go on to non-contact ACL injury. Design: Secondary analysis of prospectively collected data. Methods: 51 NCAA women's soccer players completed motion analysis of a deceleration and 90° before the competitive season. Players were classified as Injured (noncontact ACL injury during the season) or Uninjured at the end of the season. Differences between groups for peak hip adduction, internal rotation, and knee abduction angles, and knee valgus collapse were analyzed with a MANOVA. Results: Four non-contact ACL injuries were reported at the end of the season. There was a significant difference between groups for hip adduction angle during the 90° cut (p=0.02) and deceleration (p=0.03). Players who went on to ACL injury were in more hip adduction. Conclusions: Hip adduction angle is larger in players who go on to ACL injury than those who do not during two sport-specific tasks. The components of knee injury prevention programs that address proximal control and strength are likely crucial for preventing ACL injuries.
Effects of a full season on stabilometric Parameters of team handball elite athletes
Motriz: Revista de Educação Física, 2014
It is unclear whether athletes change their postural control over the course of a full sport season, or become more asymmetrical with respect to their neuromuscular performance over the same period. The aim of this study was to investigate the effects of a full sport season on the postural control of team handball elite athletes. Ten healthy, elite male team handball players performed bipodal standing (BP) and right and left unipodal standing (UP) during 30s. We used the RMS and speed of the center of pressure to describe postural sway. For the BP task, the sway was lower at the end of the season (p<0.005). For the UP tasks, the sway was lower at the end of the season only for the non-dominant limb (p<0.001). Differences between limbs were observed only at the end of the season (p<0.03). In conclusion, a full team handball season did not lead to deterioration of the athletes' postural control, but by the end of the season, the athletes were more asymmetrical.
Relationships between Balance and Functional Performance in Football Players
Journal of Human Kinetics, 2010
Relationships between Balance and Functional Performance in Football Players The aim of the present study was to examine the relationships between balance performance as measured by the Balance Error Scoring System and functional performance in football players. Twenty-two football players from University League Final Group in Turkey (age 23.05 ± 1.65 years, height 176.58 ± 6.99 cm, weight 68.80 ± 7.00 kg) volunteered to participate in the study. Postural performance was measured by the Balance Error Scoring System (BESS). For functional performance, standing broad jump, triple-hop, vertical jump, four-line sprint and three-corner run test were used. There was not a statistically significant relationship among the all BESS scores and triplehop in non-dominant leg, power, four-line sprint, and three-corner run performances (p<0.05). Triple-hop in dominant leg performance correlated with foam surface, tandem leg and total BESS score (r = 0.755, p < 0.01; r = 0.664, p < 0.05; ...
Relationship between static and dynamic balance tests among elite Australian Footballers
Journal of Science and Medicine in Sport, 2006
Objectives: To assess the existence of correlations between static and dynamic balance abilities in young and professional elite soccer players. Design: Cross-sectional Participants: Fifty-one elite players who regularly compete at national level divided into two groups: Professional (age 18-34, n=20,) and Under 15-17 (age 14-16, n=31). Main outcome measures: Dynamic balance was assessed for the case of a single-leg landing task by means of vertical time to stabilization (TTS) and postural sway calculated on the basis of center-of-pressure (COP) trajectories (sway area, COP displacements in antero-posterior and medio-lateral direction, COP path length). The same parameters were also measured for a 20 s one-legged stance to assess static balance abilities. Results: No significant correlations were found between static and dynamic balance parameters except for TTS and COP displacements in the antero-posterior direction (r=0.29, p=0.003). Professional players are characterized by lower TTS in comparison with youth leagues players (0.767 vs. 1.188 s for the dominant limb, p<0.001) and exhibit reduced sway area (of 34-40%, p<0.05) for both conditions tested.