TY  - JOUR
AU  - Maenhout, Annelies
A2  - Maenhout, Annelies
A2  - Dhooge, Famke
A2  - Herzeele, Maarten van
A2  - Palmans, Tanneke
A2  - Cools, Ann
DB  - BISp
DP  - BISp
KW  - 3D-Analyse
KW  - Acromion
KW  - Akromioklavikulargelenk
KW  - Analyse
KW  - Biomechanik
KW  - Gelenkstabilität
KW  - Humerus
KW  - Impingement-Syndrom
KW  - Muskelermüdung
KW  - Schulter
KW  - Schultergelenk
KW  - Schultergürtel
KW  - Sportmedizin
KW  - Sportwissenschaft
KW  - System, neuromuskuläres
KW  - Ultraschall
KW  - Ultraschallmethode
KW  - Untersuchung, vergleichende
KW  - Verletzungsprophylaxe
LA  - eng
TI  - Acromiohumeral distance and 3-dimensional scapular position change after overhead muscle fatigue
TT  - Abstand von Acromion und Humerus und dreidimensionale Positionsveränderung nach Muskelermüdung bei Überkopfarbeit
PY  - 2015
N2  - Context: Muscle fatigue due to repetitive and prolonged overhead sports activity is considered an important factor contributing to impingement-related rotator cuff pathologic conditions in overhead athletes. The evidence on scapular and glenohumeral kinematic changes after fatigue is contradicting and prohibits conclusions about how shoulder muscle fatigue affects acromiohumeral distance.  Objective: To investigate the effect of a fatigue protocol resembling overhead sports activity on acromiohumeral distance and 3-dimensional scapular position in overhead athletes.  Design: Cross-sectional study.  Setting: Institutional laboratory.  Patients or Other Participants: A total of 29 healthy recreational overhead athletes (14 men, 15 women; age = 22.23 ± 2.82 years, height = 178.3 ± 7.8 cm, mass = 71.6 ± 9.5 kg).  Intervention(s): The athletes were tested before and after a shoulder muscle-fatiguing protocol.  Main Outcome Measure(s):  Acromiohumeral distance was measured using ultrasound, and scapular position was determined with an electromagnetic motion-tracking system. Both measurements were performed at 3 elevation positions (0°, 45°, and 60° of abduction). We used a 3-factor mixed model for data analysis.  Results: After fatigue, the acromiohumeral distance increased when the upper extremity was actively positioned at 45° (Δ = 0.78 ± 0.24 mm, P = .002) or 60° (Δ = 0.58 ± 0.23 mm, P = .02) of abduction. Scapular position changed after fatigue to a more externally rotated position at 45° (Δ = 4.97° ± 1.13°, P < .001) and 60° (Δ = 4.61° ± 1.90°, P = .001) of abduction, a more upwardly rotated position at 45° (Δ = 6.10° ± 1.30°, P < .001) and 60° (Δ = 7.20° ± 1.65°, P < .001) of abduction, and a more posteriorly tilted position at 0°, 45°, and 60° of abduction (Δ = 1.98° ± 0.41°, P < .001).  Conclusions: After a fatiguing protocol, we found changes in acromiohumeral distance and scapular position that corresponded with an impingement-sparing situation. Verf.-Referat
L2  - http://natajournals.org/doi/pdf/10.4085/1062-6050-49.3.92
L2  - https://dx.doi.org/10.4085/1062-6050-49.3.92
DO  - 10.4085/1062-6050-49.3.92
SP  - S. 281-288
SN  - 1062-6050
JO  - Journal of athletic training
IS  - 3
VL  - 50
M3  - Elektronische Ressource (online)
M3  - Gedruckte Ressource
ID  - PU201505003650
ER  -