Are proximal and distal neuromuscular parameters able to predict hip and knee frontal plane kinematics during single-leg landing?

Rodrigues, Rodrigo; Gonçalves, Vagner; Casagrande, Rafael; Cemin, Fabrício; Nodari, Camila; Borges, Iury; Fitarelli, Luan; Bianchesse, Jean; Rocha, Emmanuel Souza da; Rabello, Rodrigo

doi:10.1016/j.ptsp.2022.11.007

Cited by 2 publications

(8 citation statements)

References 49 publications

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“…The RMS value and MDF for the complete eccentric phases were determined by employing a synchronized computer to accurately identify the initiation and conclusion of each phase visually (just before the onset of the concentric phase). For the EMG amplitude analysis, the RMS values were standardized against the values recorded during the MVICs and presented as a percentage of the maximal activation [24]. All the data were assessed by a single experienced evaluator using Miotec Suite software (version 1.0, Miotec-Biomedical Equipment, Porto Alegre, Brazil) [24,25].…”

Section: Discussionmentioning

confidence: 99%

“…For the EMG amplitude analysis, the RMS values were standardized against the values recorded during the MVICs and presented as a percentage of the maximal activation [24]. All the data were assessed by a single experienced evaluator using Miotec Suite software (version 1.0, Miotec-Biomedical Equipment, Porto Alegre, Brazil) [24,25].…”

Section: Discussionmentioning

confidence: 99%

“…However, the changes in the median frequency due to fatigue appear to be more accurate during isometric contractions than dynamic contractions, where other parameters, such as the Dimitrov spectral index of muscle fatigue, explain fatigue more effectively [37]. Additionally, there have been limited studies that have evaluated the frequency component in relation to biomechanical factors associated with knee injuries [24,38,39]. It is essential to point out that the values of the frequency components appear to be linked to the muscle fiber conduction velocity [36], with some authors also attributing this variable to the muscle fiber type [40].…”

Section: Discussionmentioning

confidence: 99%

“…To be consistent with the landmarks used for the hip and knee frontal plane 2D angular measurements, markers were placed on the anterior superior iliac spines (ASISs), the center of the patella, and the midpoint of the ankle malleoli [24]. Male participants were instructed to wear underwear, while female participants were asked to wear bikinis.…”

Section: Frontal Plane Kinematics During Single-leg Squatmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Frontal Plane Kinematics During Single-leg Squatmentioning

confidence: 99%

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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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“…The objective was to accomplish the action comfortably, minimizing any balance disruptions while adhering to a designated floor marking. Following a period of familiarization and once participants felt prepared for official task execution, each task involved consecutively performing three landings 20 .…”

Section: Kinematic Analysis During the Landing Tasksmentioning

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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Are proximal and distal neuromuscular parameters able to predict hip and knee frontal plane kinematics during single-leg landing?

Cited by 2 publications

References 49 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

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