The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Per Holmich - One of the best experts on this subject based on the ideXlab platform.
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hip Adduction and abduction strength profiles in elite soccer players implications for clinical evaluation of hip adductor muscle recovery after injury
American Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Andreas Serner, Jesper Petersen, Thomas Moller Madsen, Peter Magnusson, Per HolmichAbstract:Background: An ipsilateral hip Adduction/abduction strength ratio of more than 90%, and hip Adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip Adduction strength in athletes after groin injury. However, to what extent side-to-side symmetry in isometric hip Adduction and abduction strength can be assumed in soccer players remains uncertain.Purpose: To compare isometric hip Adduction and abduction strength on the dominant and nondominant side in injury-free soccer players.Study Design: Cross-sectional study; Level of evidence, 3.Methods: One hundred elite soccer players were included. Maximal unilateral isometric hip Adduction and abduction strength on the dominant and nondominant side were measured with a handheld dynamometer, using a reliable test procedure.Results: The dominant side was stronger than the nondominant side for both isometric hip Adduction (2.45 ± 0.54 vs 2.37 ± 0.48 Nm/kg, P = .02) and hip abduction (2.35...
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eccentric hip Adduction and abduction strength in elite soccer players and matched controls a cross sectional study
British Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Jesper Petersen, Christian Couppe, S P Magnusson, Per HolmichAbstract:Background Eccentric hip Adduction and abduction strength plays an important role in the treatment and prevention of groin injuries in soccer players. Lower extremity strength deficits of less than 10% on the injured side, compared to the uninjured side, have been suggested as the clinical milestone before returning to sports following injury. Objective To examine whether a side-to-side eccentric hip Adduction or abduction strength symmetry can be assumed in non-injured soccer players and matched controls. Material and Methods Nine elite soccer players 19.4 (1.5) years and nine recreational athletes 19.5 (2.0) years matched for sex, height and weight were included. Eccentric hip Adduction and abduction strength of the dominant and non-dominant leg was tested for all the participants using an eccentric break test with a handheld dynamometer. Results The dominant leg was 14% stronger than the non-dominant leg for hip Adduction in the soccer players (p Conclusion Eccentric hip Adduction strength was greater in the dominant leg than in the non-dominant leg in soccer players, but not in matched controls. Eccentric hip abduction strength was greater in soccer players than matched controls, but soccer does not seem to induce a similar eccentric strength adaptation in the hip adductors.
Kristian Thorborg - One of the best experts on this subject based on the ideXlab platform.
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hip Adduction and abduction strength profiles in elite soccer players implications for clinical evaluation of hip adductor muscle recovery after injury
American Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Andreas Serner, Jesper Petersen, Thomas Moller Madsen, Peter Magnusson, Per HolmichAbstract:Background: An ipsilateral hip Adduction/abduction strength ratio of more than 90%, and hip Adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip Adduction strength in athletes after groin injury. However, to what extent side-to-side symmetry in isometric hip Adduction and abduction strength can be assumed in soccer players remains uncertain.Purpose: To compare isometric hip Adduction and abduction strength on the dominant and nondominant side in injury-free soccer players.Study Design: Cross-sectional study; Level of evidence, 3.Methods: One hundred elite soccer players were included. Maximal unilateral isometric hip Adduction and abduction strength on the dominant and nondominant side were measured with a handheld dynamometer, using a reliable test procedure.Results: The dominant side was stronger than the nondominant side for both isometric hip Adduction (2.45 ± 0.54 vs 2.37 ± 0.48 Nm/kg, P = .02) and hip abduction (2.35...
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eccentric hip Adduction and abduction strength in elite soccer players and matched controls a cross sectional study
British Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Jesper Petersen, Christian Couppe, S P Magnusson, Per HolmichAbstract:Background Eccentric hip Adduction and abduction strength plays an important role in the treatment and prevention of groin injuries in soccer players. Lower extremity strength deficits of less than 10% on the injured side, compared to the uninjured side, have been suggested as the clinical milestone before returning to sports following injury. Objective To examine whether a side-to-side eccentric hip Adduction or abduction strength symmetry can be assumed in non-injured soccer players and matched controls. Material and Methods Nine elite soccer players 19.4 (1.5) years and nine recreational athletes 19.5 (2.0) years matched for sex, height and weight were included. Eccentric hip Adduction and abduction strength of the dominant and non-dominant leg was tested for all the participants using an eccentric break test with a handheld dynamometer. Results The dominant leg was 14% stronger than the non-dominant leg for hip Adduction in the soccer players (p Conclusion Eccentric hip Adduction strength was greater in the dominant leg than in the non-dominant leg in soccer players, but not in matched controls. Eccentric hip abduction strength was greater in soccer players than matched controls, but soccer does not seem to induce a similar eccentric strength adaptation in the hip adductors.
Giovanni Merolla - One of the best experts on this subject based on the ideXlab platform.
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Glenohumeral and scapulohumeral kinematic analysis of patients with traumatic anterior instability wearing a shoulder brace: a prospective laboratory study
MUSCULOSKELETAL SURGERY, 2017Co-Authors: F. Dellabiancia, I. Parel, M. V. Filippi, Giuseppe Porcellini, Giovanni MerollaAbstract:Purpose To assess the effectiveness of a novel glenohumeral joint immobilizer, the S2 Shoulder Stabilizer^®, by evaluating shoulder kinematics with a stereophotogrammetry system. Methods Participants in this prospective laboratory study were recruited from patients with anterior traumatic instability awaiting arthroscopic glenohumeral stabilization. Glenohumeral and scapulohumeral kinematic data (arm abduction–Adduction and internal–external rotation, and scapular pronation–retraction and mediolateral rotation) were collected twice, without and with the brace, using a VICON™ motion capture system, and processed with MATLAB^® software. Results The tests showed a significantly lower joint angle during abduction–Adduction ( p = 0.0022) and external rotation ( p = 0.0076) and a significantly lower ( p = 0.0022) mediolateral scapular rotation angle in the limbs wearing the immobilizer. Humeral head translation during abduction–Adduction and internal–external rotation was also lower in the patients wearing the brace. Conclusions The immobilizer significantly limited joint excursion in all planes of movement except internal rotation. The narrower humeral head translation with respect to the trunk, measured in the tests with the brace, demonstrates that the immobilizer achieves the goal of preserving joint stability in the movements that are at risk of dislocation.
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Glenohumeral and scapulohumeral kinematic analysis of patients with traumatic anterior instability wearing a shoulder brace: a prospective laboratory study.
Musculoskeletal surgery, 2017Co-Authors: F. Dellabiancia, I. Parel, M. V. Filippi, Giuseppe Porcellini, Giovanni MerollaAbstract:To assess the effectiveness of a novel glenohumeral joint immobilizer, the S2 Shoulder Stabilizer®, by evaluating shoulder kinematics with a stereophotogrammetry system. Participants in this prospective laboratory study were recruited from patients with anterior traumatic instability awaiting arthroscopic glenohumeral stabilization. Glenohumeral and scapulohumeral kinematic data (arm abduction-Adduction and internal-external rotation, and scapular pronation-retraction and mediolateral rotation) were collected twice, without and with the brace, using a VICON™ motion capture system, and processed with MATLAB® software. The tests showed a significantly lower joint angle during abduction-Adduction (p = 0.0022) and external rotation (p = 0.0076) and a significantly lower (p = 0.0022) mediolateral scapular rotation angle in the limbs wearing the immobilizer. Humeral head translation during abduction-Adduction and internal-external rotation was also lower in the patients wearing the brace. The immobilizer significantly limited joint excursion in all planes of movement except internal rotation. The narrower humeral head translation with respect to the trunk, measured in the tests with the brace, demonstrates that the immobilizer achieves the goal of preserving joint stability in the movements that are at risk of dislocation.
Steven M Zeitels - One of the best experts on this subject based on the ideXlab platform.
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endoscopic measurement of vocal fold movement during Adduction and abduction
Laryngoscope, 2005Co-Authors: Seth H Dailey, James B Kobler, Robert E Hillman, Kittisard Tangrom, Ekawudh Thananart, Marcelo Mauri, Steven M ZeitelsAbstract:Objectives/Hypothesis: Whereas vibration of the vocal folds has been analyzed and modeled in detail, less attention has been paid to quantifying the slower motions of abduction and Adduction. Because these gestures reflect neuromuscular function, cartilage geometry, and joint mobility, objective measurement might improve assessment and treatment of patients with neuromuscular or structural disease. Study Design: Prospective, observational. Methods: Twenty-one normal adult volunteers performed a repeated “ee-sniff” task at three rates during flexible endoscopy. Distortion in the images was corrected and frame-by-frame analysis of the angle between the true vocal folds (glottic angle) yielded measures of maximum abduction angle (MAA) and mean angular velocities of abduction (MVAB) and Adduction (MVAD). Results: Reliability tests indicated interjudge variability of 3.8 degrees (deg). The mean MAA was 51 deg and ranged from 31 to 77 deg across subjects. The mean MVADs were 229, 309, and 475 deg/s for slow, medium, and fast rates, respectively, and the mean MVABs were 330, 388, and 441 deg/s for slow, medium, and fast rates, respectively. Statistical analysis showed greater influence of gesture rate on Adduction than on abduction. Conclusions: The glottic angle can be reliably measured from flexible endoscopic images and angular velocities of vocal fold abduction and Adduction can be determined from analysis of sequential video frames. Accuracy is significantly enhanced by correction of distortion in the images. This approach holds promise for objective characterization of vocal fold function in patients with a variety of disorders.
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Adduction arytenopexy for vocal fold paralysis indications and technique
Journal of Laryngology and Otology, 2004Co-Authors: Steven M Zeitels, Marcelo Mauri, Seth H DaileyAbstract:Adduction arytenopexy was designed as an innovation to arytenoid Adduction, however the pragmatic issues regarding patient selection for these procedures has not been comprehensively assessed. A prospective examination was performed on 100 consecutive patients who had undergone laryngoplastic phonosurgical reconstruction for paralytic dysphonia. Seventy-seven of 100 (77 per cent) were judged pre-operatively to gain potentially significant phonatory enhancement from an arytenoid procedure. Fifty-six of 77 (73 per cent) underwent Adduction arytenopexy; 17 of 77 (22 per cent) were judged pre-operatively to have inadequate respiratory abduction of the contralateral arytenoid and two out of 77 (three per cent) had athletic aerodynamic requirements. In another two out of 77 (three per cent), there was a chance of favourable reinnervation and thus it was not the preferred method. The majority of patients were judged pre-operatively to gain potentially substantial phonatory enhancement from an arytenoid procedure. However, in this series, approximately 25 per cent of the patients were considered to be unsuitable candidates for an arytenoid medializing procedure, primarily because it was deemed that the operation could result in an inadequate airway.
Jesper Petersen - One of the best experts on this subject based on the ideXlab platform.
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hip Adduction and abduction strength profiles in elite soccer players implications for clinical evaluation of hip adductor muscle recovery after injury
American Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Andreas Serner, Jesper Petersen, Thomas Moller Madsen, Peter Magnusson, Per HolmichAbstract:Background: An ipsilateral hip Adduction/abduction strength ratio of more than 90%, and hip Adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip Adduction strength in athletes after groin injury. However, to what extent side-to-side symmetry in isometric hip Adduction and abduction strength can be assumed in soccer players remains uncertain.Purpose: To compare isometric hip Adduction and abduction strength on the dominant and nondominant side in injury-free soccer players.Study Design: Cross-sectional study; Level of evidence, 3.Methods: One hundred elite soccer players were included. Maximal unilateral isometric hip Adduction and abduction strength on the dominant and nondominant side were measured with a handheld dynamometer, using a reliable test procedure.Results: The dominant side was stronger than the nondominant side for both isometric hip Adduction (2.45 ± 0.54 vs 2.37 ± 0.48 Nm/kg, P = .02) and hip abduction (2.35...
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eccentric hip Adduction and abduction strength in elite soccer players and matched controls a cross sectional study
British Journal of Sports Medicine, 2011Co-Authors: Kristian Thorborg, Jesper Petersen, Christian Couppe, S P Magnusson, Per HolmichAbstract:Background Eccentric hip Adduction and abduction strength plays an important role in the treatment and prevention of groin injuries in soccer players. Lower extremity strength deficits of less than 10% on the injured side, compared to the uninjured side, have been suggested as the clinical milestone before returning to sports following injury. Objective To examine whether a side-to-side eccentric hip Adduction or abduction strength symmetry can be assumed in non-injured soccer players and matched controls. Material and Methods Nine elite soccer players 19.4 (1.5) years and nine recreational athletes 19.5 (2.0) years matched for sex, height and weight were included. Eccentric hip Adduction and abduction strength of the dominant and non-dominant leg was tested for all the participants using an eccentric break test with a handheld dynamometer. Results The dominant leg was 14% stronger than the non-dominant leg for hip Adduction in the soccer players (p Conclusion Eccentric hip Adduction strength was greater in the dominant leg than in the non-dominant leg in soccer players, but not in matched controls. Eccentric hip abduction strength was greater in soccer players than matched controls, but soccer does not seem to induce a similar eccentric strength adaptation in the hip adductors.
