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A comparison of two gluteus maximus EMG maximum voluntary isometric contraction positions.

ABSTRACT: Background. The purpose of this study was to compare the peak electromyography (EMG) of the most commonly-used position in the literature, the prone bent-leg (90°) hip extension against manual resistance applied to the distal thigh (PRONE), to a novel position, the standing glute squeeze (SQUEEZE). Methods. Surface EMG electrodes were placed on the upper and lower gluteus maximus of thirteen recreationally active females (age = 28.9 years; height = 164 cm; body mass = 58.2 kg), before three maximum voluntary isometric contraction (MVIC) trials for each position were obtained in a randomized, counterbalanced fashion. Results. No statistically significant (p < 0.05) differences were observed between PRONE (upper: 91.94%; lower: 94.52%) and SQUEEZE (upper: 92.04%; lower: 85.12%) for both the upper and lower gluteus maximus. Neither the PRONE nor SQUEEZE was more effective between all subjects. Conclusions. In agreement with other studies, no single testing position is ideal for every participant. Therefore, it is recommended that investigators employ multiple MVIC positions, when possible, to ensure accuracy. Future research should investigate a variety of gluteus maximus MVIC positions in heterogeneous samples.

SUBMITTER: Contreras B

PROVIDER: S-EPMC4582950 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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A comparison of two gluteus maximus EMG maximum voluntary isometric contraction positions.

Contreras Bret B Vigotsky Andrew D AD Schoenfeld Brad J BJ Beardsley Chris C Cronin John J

PeerJ 20150922

Background. The purpose of this study was to compare the peak electromyography (EMG) of the most commonly-used position in the literature, the prone bent-leg (90°) hip extension against manual resistance applied to the distal thigh (PRONE), to a novel position, the standing glute squeeze (SQUEEZE). Methods. Surface EMG electrodes were placed on the upper and lower gluteus maximus of thirteen recreationally active females (age = 28.9 years; height = 164 cm; body mass = 58.2 kg), before three maxi ...[more]

PMID: 26417543

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Project description:Hip abductor deficiency resulting from gluteus medius and minimus pathology is increasingly recognized as a generator of lateral-sided hip pain. In the setting of a failed gluteus medius repair or in patients with irreparable tears, transfer of the anterior portion of the gluteus maximus muscle can be performed to treat gluteal abductor deficiency. The classic description of the gluteus maximus transfer technique relies solely on bone tunnel fixation. This article describes a reproducible technique that incorporates the addition of a distal row to the tendon transfer, which may improve fixation by both compressing the tendon transfer to the greater trochanter and providing improved biomechanical strength to the transfer. Technique Video Video 1 Gluteus maximus transfer for hip abductor deficiency. A surgical incision is placed over the femoral shaft and extended proximally and posteriorly toward the posterior superior iliac spine. Electrocautery is used to dissect down to the iliotibial tract. A Cobb elevator is used to lift the subcutaneous adipose tissue and identify the underlying fascial layer. Once developed, the iliotibial tract is split in the midline of the greater trochanter to establish the anterior edge. Next, the posterior aspect of the flap is planned using electrocautery to preliminarily identify the posterior edge of the gluteus maximus flap. A nonabsorbable braided suture is used to place a Krackow stitch in the distal portion of the flap. Scar tissue or prior suture must be removed to expose the greater trochanter, and a high-speed burr is used to decorticate the greater trochanter and create a bleeding footprint. A 2.6-mm drill is used to create 3 anterior and 3 posterior bone tunnels in the greater trochanter, and FiberWire sutures are placed through the muscle flap on the anterior and posterior edges and shuttled through the bone tunnels. A double-row repair is used, and 1 limb from each FiberWire suture is passed through a suture anchor. The holes for each anchor are drilled and then tapped distal to the vastus ridge.

Dataset Information

A comparison of two gluteus maximus EMG maximum voluntary isometric contraction positions.

Publications

A comparison of two gluteus maximus EMG maximum voluntary isometric contraction positions.

Similar Datasets

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