Comparative Effects of 4 Single-Leg Squat Exercises in Subjects With Gluteus Medius Weakness.
J Sport Rehabil
; 27(6): 513-519, 2018 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-28714757
ABSTRACT
CONTEXT Of the weight-bearing exercises, single-leg squats (SLSs) represent one of the most commonly used hip-strengthening exercises that require more gluteus medius (GMED) activity. To date, no studies have investigated how the 4 SLS exercises affect muscle imbalance of GMED, tensor fasciae latae (TFL), and adductor longus (AL), and kinematics of hip. OBJECTIVE:
To investigate the hip muscle activities, onset time, and kinematics during 4 different SLS exercises (unilateral squat, unilateral wall-squat [UWS], lateral step-down, and front step-down) in subjects with GMED weakness.DESIGN:
Repeated-measures experimental design.SETTING:
Research laboratory.PARTICIPANTS:
Twenty-two subjects (11 males and 11 females) participated in this study and were compared using 1-way repeated-measures analysis of variance. MAIN OUTCOMEMEASURES:
Surface electromyography was used to measure the muscle activities and onset time of the GMED, TFL, and AL, and 3-dimensional motion tracking system was used to measure the hip adduction and internal/external rotation angles during SLS exercises. One-way repeated-measures analysis of variance was used at a significance level of P < .05.RESULTS:
The UWS produced higher GMED/TFL activity ratio and lower GMED/TFL onset time ratio than in the other 3 exercises (P < .05). No difference in GMED/AL activity ratio and GMED/AL onset time ratio was observed. The hip adduction angle was greater in UWS than in the other 3 exercises (P < .05). As for the hip internal/external rotation, lateral step-down exhibited higher hip internal rotation angle than front step-down (P < .05).CONCLUSION:
The UWS may be recommended as an effective exercise for the subjects with GMED weakness, but they should take care to avoid excessive hip adduction during the exercise.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Suporte de Carga
/
Músculo Esquelético
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Terapia por Exercício
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Sport Rehabil
Assunto da revista:
MEDICINA ESPORTIVA
/
REABILITACAO
Ano de publicação:
2018
Tipo de documento:
Article