Sufficient shoulder flexor strength is necessary for accurate movement of the shoulder joint because several factors can cause compensatory movements of the scapula.
OBJECTIVE:
We investigated the influence of external fixation on the isometric shoulder flexors strength (ISFS) in individuals with and without scapular elevation (SE) during shoulder flexion.
METHODS:
The healthy and SE groups included 29 individuals. The ISFS was measured using a tensiometer (kg) under conditions of with and without external fixation, in a random order. The change in the ISFS (the strength difference with and without external fixation) was compared between the healthy and SE groups using an independent -test.
RESULTS:
The change in the ISFS differed significantly between the healthy and SE groups (3.5% and 32.3%, respectively; 0.001).
CONCLUSION:
These findings suggest that external fixation should be considered during shoulder flexion to determine the ISFS accurately in individuals with compensated SE.
NeumannDA. Kinesiology of the musculoskeletal system-e-book: foundations for rehabilitation. Elsevier Health Sciences.2016; pp. 104-116.
2.
WeonJHJungDY. Comparison of the muscle activities of upper trapezius and middle deltoid between subjects with and without elevation of shoulder girdle during arm elevation. J Kor Phys Ther.2012; 24(6): 388-392.
3.
VoightMLThomsonBC. The role of the scapula in the rehabilitation of shoulder injuries. J Athl Train.2000; 35(3): 364-372.
4.
KwonOYKangMHKimMHKimSJKimTHParkGNOhJSLeeWHLimJYJangJHJeonICJeongDYJungSDJungSHHaSMHwangUJ. KEMA approach for analysis & management of movement impairment. Seoul. Hakjisa Medical. 2022; pp. 375-431.
5.
SahrmannSAzevedoDCVan DillenL. Diagnosis and treatment of movement system impairment syndromes. Bra J Phys Ther.2017; 21(6): 391-399.
6.
ArlottaMLovascoGMcLeanL. Selective recruitment of the lower fibers of the trapezius muscle. J Electromyogr Kinesiol.2011; 21(3): 403-410. doi: 10.1016/j.jelekin.2010.11.006.
7.
JangHJKimSYOhDW. Effects of augmented trunk stabilization with external compression support on shoulder and scapular muscle activity and maximum strength during isometric shoulder abduction. J Electromyogr Kinesiol.2015; 25(2): 387-391. doi: 10.1016/j.jelekin.2014.12.005.
8.
JeonICKwonOYHwangUJJungSHWeonJH. Increased scapular anterior tilting and decreased humeral internal rotation in the mouse shoulder in computer workers with shoulder pain. Executive Editor.2019; 13(2): 111. doi: 10.5958/0973-5674.2019.00056.X.
9.
KimHAHwangUJJungSHAhnSHKimJHKwonOY. Comparison of shoulder strength in males with and without myofascial trigger points in the upper trapezius. Clin Biomech (Bristol, Avon).2017; 49: 134-138. doi: 10.1016/j.clinbiomech.2017.09.001.
10.
JangTJHwangBHJeonIC. Influence of external scapular stabilization on the isometric strength of shoulder flexor in the sitting position in subjects with scapular singing. J Kor Phys Ther.2021; 33(5): 252-257. doi: 10.18857/jkpt.2021.33.5.252.
11.
LeHVLeeSJNazarianARodriguezEK. Adhesive capsulitis of the shoulder: review of pathophysiology and currentclinical treatments. Shoulder Elbow.2017; 9(2): 75-84. doi: 10.1177/1758573216676786.
12.
JangTJJeonIC. Muscle activation of serratus anterior during self-resisted scapular protraction with forward flexion on unstable surface in sitting position. J Musculoskelet Sci Technol.2021; 5(2): 41-46. doi: 10.29273/jmst.2021.5.2.41.
13.
JeonIC. The effectiveness of the external support on the strength and muscle activity of hip abductor in subject without core stability. Phys Ther Kor.2022; 29(1): 64-69. doi: 10.12674/ptk.2022.29.1.64.
14.
BeckerMRothmanJNelsonAJ, et al. The effects of multifocal refractive lenses on occipital extension and forward head posture during a visual task. Ergonomics.2007; 50(12): 2095-2103. doi: 10.1080/00140130701419166.
15.
FayadFHannetonSLefevre-ColauMMPoiraudeauSRevelMRoby-BramiA. The trunk as a part of the kinematic chain for arm elevation in healthy subjects and in patients with frozen shoulder. Brain Res.2008; 1191: 107-115. doi: 10.1016/j.brainres.2007.11.046.
16.
LongoSCorradiAMichielonGSardanelliFSconfienzaLM. Ultrasound evaluation of the subacromial space in healthy subjects performing three different positions of shoulder abduction in both loaded and unloaded conditions. Phys Ther Sport.2017; 23: 105-112. doi: 10.1016/j.ptsp.2016.08.007.
17.
MunroBH. Statistical methods for health care research. 1st ed. lippincott williams & wilkins; 2005.
18.
KisnerCColbyLABorstadJ. Therapeutic exercise: foundations and techniques. Fa Davis; 2017.
19.
StratfordPWBalsorBE. A comparison of make and break tests using a hand-held dynamometer and the Kin-Com. J Orthop Sports Phys Ther.1994; 19(1): 28-32. doi: 10.2519/jospt.1994.19.1.28.
20.
LimJXTohRXChookSKSebastinSJKarjalainenT. A comparison of the reliability of make versus break testing in measuring palmar abduction strength of the thumb. J Hand Microsurg.2014; 6(1): 8-12. doi: 10.1007/s12593-013-0106-2.
BorlozSGrafVGardSZiltenerJL. Dyskinésie de l’omoplate [Scapular dyskinesis]. Rev Med Suisse.2012; 8(367): 2422-2428.
23.
NielsenGStoneJMatthewsA, et al. Physiotherapy for functional motor disorders: a consensus recommendation. J Neurol Neurosurg Psychiatry.2015; 86(10): 1113-1119. doi: 10.1136/jnnp-2014-309255.
