PMID- 32977913
OWN - NLM
STAT- MEDLINE
DCOM- 20210818
LR  - 20210818
IS  - 1873-4030 (Electronic)
IS  - 1350-4533 (Linking)
VI  - 84
DP  - 2020 Oct
TI  - Angular ranges as a reliable isokinetic method to assess shoulder rotator 
      muscles.
PG  - 16-20
LID - S1350-4533(20)30121-1 [pii]
LID - 10.1016/j.medengphy.2020.07.023 [doi]
AB  - OBJECTIVES: Physiological and functional ratios of internal and external rotators 
      are used to assess the muscle balance of shoulder joint. Ratios are usually 
      calculated from the peak torque value (PT) of each muscle group, without taking 
      into account the angular positions at which PT are reached. The aim of our study 
      was to propose an alternative and reliable method based on sectorial analysis for 
      isokinetic assessment of the shoulder muscle balance. METHOD: 22 men 
      (23.0 +/- 2.7y) participated in isokinetic tests of the muscle rotators in a seated 
      position in scapular plane, at 60  degrees s(-1), in concentric (CON) and eccentric (ECC) 
      modes for both shoulders. Peak torque (PT) and torque averaged per range of 10 degrees  
      (T) were calculated for internal and external rotators. Physiological and 
      functional ratios were calculated with classic peak approach (PT-ratios) and new 
      sectorial approach (T-ratios). RESULTS: PT-ratios and T-ratios were different 
      (P < 0.05). T-ratios were different between the angular ranges (P < 0.05). The 
      reliability was variable as function of angular ranges. The majority of the 
      T-ratios calculated over non-extreme angular ranges were more reliable than 
      PT-ratios (intraclass correlation coefficient=0.14-0.75; coefficient of 
      variation=7.0-28.5%). CONCLUSIONS: The angular range method showed a better 
      reliability than the peak torque method. Angular range method better reflects the 
      functional reality because it takes into account the muscular potential in its 
      entirety of the range of movement.
CI  - Copyright (c) 2020. Published by Elsevier Ltd.
FAU - Maryne, Cozette
AU  - Maryne C
AD  - Laboratory of Physiological Adaptations to Exercise and Effort Rehabilitation 
      (APERE), UR3300, UFR-STAPS, University of Picardie Jules Verne, Paul Claudel 
      Avenue, 80000 Amiens, France. Electronic address: maryne.cozette@u-picardie.fr.
FAU - Pierre-Marie, Lepretre
AU  - Pierre-Marie L
AD  - Laboratory of Physiological Adaptations to Exercise and Effort Rehabilitation 
      (APERE), UR3300, UFR-STAPS, University of Picardie Jules Verne, Paul Claudel 
      Avenue, 80000 Amiens, France; Cardiovascular Rehabilitation Unit, Hospital Center 
      of Corbie, Corbie, France.
FAU - Thierry, Weissland
AU  - Thierry W
AD  - Laboratory of Integration of Material with the System (IMS), UMR 5218, University 
      of Bordeaux, Talence, France.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200730
PL  - England
TA  - Med Eng Phys
JT  - Medical engineering & physics
JID - 9422753
SB  - IM
MH  - Humans
MH  - Male
MH  - Muscle Contraction
MH  - Paraspinal Muscles
MH  - Reproducibility of Results
MH  - *Rotator Cuff
MH  - *Shoulder
MH  - Torque
OTO - NOTNLM
OT  - Data accuracy
OT  - Muscle balance
OT  - Rehabilitation
OT  - Sport
OT  - Strength
COIS- Declaration of Competing Interest None.
EDAT- 2020/09/27 06:00
MHDA- 2021/08/19 06:00
CRDT- 2020/09/26 05:22
PHST- 2019/09/10 00:00 [received]
PHST- 2020/07/21 00:00 [revised]
PHST- 2020/07/26 00:00 [accepted]
PHST- 2020/09/26 05:22 [entrez]
PHST- 2020/09/27 06:00 [pubmed]
PHST- 2021/08/19 06:00 [medline]
AID - S1350-4533(20)30121-1 [pii]
AID - 10.1016/j.medengphy.2020.07.023 [doi]
PST - ppublish
SO  - Med Eng Phys. 2020 Oct;84:16-20. doi: 10.1016/j.medengphy.2020.07.023. Epub 2020 
      Jul 30.