Hip abduction machine is better than free weights to target the gluteus medius while minimizing tensor fascia latae activation

Paz, Isabel de Almeida; Frigotto, Michele Fernandes; Cardoso, Charles Alexandre; Rabello, Rodrigo; Rodrigues, Rodrigo

doi:10.1016/j.jbmt.2022.01.001

Cited by 9 publications

(3 citation statements)

References 27 publications

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“…Concurrently, the contralateral leg was flexed at both the hip and knee to 90 • . To ensure standardized resistance, the distal region of the dominant leg (approximately 5 cm above the lateral malleolus) was firmly positioned against a rigid and fixed structure and the EMG amplitudes of the GMed and TFL were recorded [23]. The MVIC assessments of the knee extensors and hip abductors consisted of three trials, each sustained for a duration of five seconds, with a two-minute interval provided between trials.…”

Section: Maximal Voluntary Isometric Contractionsmentioning

confidence: 99%

Females Present Different Single-Leg Squat Kinematics and Muscle Activation Strategies than Males Even after Hip Abductor Fatigue

Gaviraghi,

Chaida Sonda,

Fernandes Frigotto

et al. 2024

Biomechanics

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Background: Despite the potential connection between hip and knee muscle control, there is limited research on the effects of hip abductor fatigue on the hip and knee neuromuscular responses in both males and females. This study aimed to investigate the influence of sex on the hip and knee frontal plane kinematics and the EMG responses of the hip abductors and knee extensor muscles during the single-leg squat before and after hip abductor fatigue. Methods: A total of 30 participants (males, n = 15; females, n = 15) performed single-leg squats before and immediately after a hip abductor fatigue protocol (10° hip abduction position while bearing a 20% load of their estimated 1RM until exhaustion). The frontal plane kinematics (hip adduction and knee frontal plane projection angle) and EMG parameters (amplitude and median frequency) of the gluteus medius (GMed), tensor fascia latae (TFL), vastus lateralis (VL) and vastus medialis (VM) were measured during the single-leg squat. Results: We did not find any effects of hip abductor fatigue or interaction between fatigue and sex on the evaluated parameters (p > 0.05). However, compared to males, females had greater values for the hip and knee frontal plane kinematics (p = 0.030), GMed EMG amplitude (+10.2%, p = 0.012) and median frequency (+10.3%; p = 0.042) and lower VL median frequency (−9.80%; p = 0.007). Conclusions: These findings establish sex-related differences in the kinematics and hip and knee EMG parameters during the single-leg squat, which were not influenced by the hip abductor fatigue protocol.

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Section: Maximal Voluntary Isometric Contractionsmentioning

confidence: 99%

Females Present Different Single-Leg Squat Kinematics and Muscle Activation Strategies than Males Even after Hip Abductor Fatigue

Gaviraghi,

Chaida Sonda,

Fernandes Frigotto

et al. 2024

Biomechanics

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“…On the first day, participants completed the Informed Consent Form, underwent body composition assessment, and performed a 10-repetition maximum test for hip abduction exercise in the side-lying position. This exercise was selected based on a previous study conducted in the laboratory, which demonstrated higher activation of the hip abductor muscles during this exercise 18 .…”

Section: Experimental Designmentioning

confidence: 99%

“…Participants were also familiarized with the controlled movement speed set at 60 beats per minute, guided by a metronome. The load was determined through trial and error, with three attempts performed and a five-minute interval between each attempt to minimize the effects of fatigue on the results 18 . In cases where the load could not be determined within the three attempts, the assessment was rescheduled for a future session.…”

Section: Determination Of Exercise Loadmentioning

confidence: 99%

A single session of hip abductors resistance exercise until failure changes shank muscle activation during landing tasks

Cemin,

Chaffe,

Nodari

et al. 2023

BJMB

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BACKGROUND: Weakness in the hip abductors can lead to lower limb misalignment and an elevated risk of injury. This can result in compensatory mechanisms at the ankle to maintain stability. AIM: To verify the effects of a single session of hip abductors resistance exercise until failure on the foot pronation and EMG amplitude of shank muscles (peroneus longus - PL; tibialis anterior - TA) during landing tasks. METHOD: Seventeen participants completed single-leg and double-leg landings both before and after a single session of hip abductors resistance exercise until failure. The exercise consisted of four sets of 10 repetitions maximum, with a 2-minute rest interval between each set. Measurements of PL and TA EMG amplitude and degree of foot pronation were performed during landings. RESULTS: We observed a greater degree of supination of the foot during single-leg compared to double-leg landing (p=0.006), without effect of exercise. Regarding TA EMG amplitude, there was no exercise effect (p=0.951), with a higher amplitude observed in double-leg compared to single-leg landing (p=0.001). EMG amplitude of PL was higher during single-leg compared to double-leg landing (p=0.003) and the exercise significantly reduced its activation in both tasks (p=0.032). CONCLUSION: Single-leg and double-leg landings exhibited variations in mechanics and activation patterns of the distal muscles. Following a single session of hip abductors resistance exercise until failure, there was a reduction in PL activation during landing tasks. This suggests that there were neuromuscular compensations occurring distally due to alterations in the hip abductor muscles.

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Effects of clamshell exercises in terminal extension lag after ACL reconstruction

Kaleem,

Noor,

Salman Bashir

et al. 2024

The Knee

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Hip abduction machine is better than free weights to target the gluteus medius while minimizing tensor fascia latae activation

Cited by 9 publications

References 27 publications

Females Present Different Single-Leg Squat Kinematics and Muscle Activation Strategies than Males Even after Hip Abductor Fatigue

Females Present Different Single-Leg Squat Kinematics and Muscle Activation Strategies than Males Even after Hip Abductor Fatigue

A single session of hip abductors resistance exercise until failure changes shank muscle activation during landing tasks

Effects of clamshell exercises in terminal extension lag after ACL reconstruction

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