Trunk Position Influences the Kinematics, Kinetics, and Muscle Activity of the Lead Lower Extremity During the Forward Lunge Exercise

Farrokhi, Shawn; Pollard, Christine D.; Souza, Richard B.; Chen, Yu-Jen; Reischl, Stephen F.; Powers, Christopher M.

doi:10.2519/jospt.2008.2634

Cited by 133 publications

(113 citation statements)

References 11 publications

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“…Prior to electrode placement, the skin was shaved, abraded with coarse gauze to reduce skin impedance, and cleaned with isopropyl alcohol. Consistent with a previous publication, 6 electrodes were placed over the semimembranosus and biceps femoris muscle bellies midway between the ischial tuberosity and the medial/lateral epicondyles of the femur.…”

Section: Biomechanical Evaluationmentioning

confidence: 77%

Strengthening and Neuromuscular Reeducation of the Gluteus Maximus in a Triathlete with Exercise-Associated Cramping of the Hamstrings

Wagner¹,

Behnia²,

Ancheta³

et al. 2010

Journal of Orthopaedic & Sports Physical Therapy

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Study Design Case report. Objective To highlight the effects of an intervention program consisting of strengthening and neuromuscular reeducation of the gluteus maximus in an elite triathlete with exercise-associated muscle cramping (EAMC). Background Researchers have described 2 theories concerning the etiology of EAMC: (1) muscle fatigue and (2) electrolyte deficit. As such, interventions for EAMC typically consist of stretching/strengthening of the involved muscle and/or supplements to restore electrolyte imbalances. Case Description The patient was a 42-year-old male triathlete with a primary complaint of recurrent cramping of his right hamstring muscle, which prevented him from completing races at his desired pace. Strength testing revealed gluteus maximus muscle weakness bilaterally. Electromyographic (EMG) analysis (surface electrodes, 1560 Hz) revealed that the right hamstrings were being activated excessively during terminal swing and the first half of the stance phase (48.1% maximum voluntary isometric contraction [MVIC]). Outcomes Following the intervention, the patient was able to complete 3 triathlons without hamstring cramping. Strength testing revealed that the right hip extension strength improved from 35.6 to 54.7 kg, and activation of the hamstrings during terminal swing and the first half of the stance phase decreased to 36.4% of MVIC. Discussion A program of gluteus maximus strengthening and neuromuscular training eliminated EAMC of the hamstrings in this patient. Given that the hamstrings and gluteus maximus work as agonists to decelerate the thigh during terminal swing phase and control hip flexion during loading response of running, we postulate that strengthening of the gluteus maximus decreased the relative effort required by the hamstrings, thus reducing EAMC. The results of the EMG evaluation that was performed as part of this case report provides support for this hypothesis. Level of Evidence Therapy, level 4. J Orthop Sports Phys Ther 2010;40(2):112–119. doi:10.2519/jospt.2010.3110

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Section: Biomechanical Evaluationmentioning

confidence: 77%

Strengthening and Neuromuscular Reeducation of the Gluteus Maximus in a Triathlete with Exercise-Associated Cramping of the Hamstrings

Wagner¹,

Behnia²,

Ancheta³

et al. 2010

Journal of Orthopaedic & Sports Physical Therapy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Both direct in vivo measurements [2][3][4]18,19,23 and experimental biomechanical models [12][13][14][15][16][17]44,[49][50][51][52][53][54]61,62 have been used to quantify ACL strain or tensile force during WB and NWB exercises, with both approaches having advantages and disadvantages. It should be emphasized that, with either approach, none of the data from the literature are from individuals with a recent ACL reconstruction, or from individuals who had significant weakness of the knee musculature.…”

Section: T T Synopsismentioning

confidence: 99%

ACL Strain and Tensile Forces for Weight Bearing and Non—Weight-Bearing Exercises After ACL Reconstruction: A Guide to Exercise Selection

Escamilla¹,

MacLeod²,

Wilk³

et al. 2012

Journal of Orthopaedic & Sports Physical Therapy

146

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“…Movement is deemed 'optimal' during these exercises when injury-risk is minimised and performance is maximised [4]. There are currently 4 distinct methods of assessing movement during lower limb exercise: (i) 3D motion capture; (ii) depth-camera based systems (iii) visual analysis from a qualified exercise professional; (iv) self-assessment.…”

Section: Introductionmentioning

confidence: 99%

Wearable Inertial Sensor Systems for Lower Limb Exercise Detection and Evaluation: A Systematic Review

et al. 2018

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BackgroundAnalysis of lower limb exercises is traditionally completed with four distinct methods (i) 3D motion capture; (ii) depth-camera based systems (iii) visual analysis from a qualified exercise professional; (iv) self-assessment. Each method is associated with a number of limitations. ObjectiveThe aim of this systematic review is to synthesize and evaluate studies which have investigated the capacity for inertial measurement unit (IMU) technologies to assess movement quality in lower limb exercises. Data SourcesA systematic review of PubMed, ScienceDirect and Scopus was conducted. Study Eligibility CriteriaArticles written in English and published in the last 10 years which contained an IMU system for the analysis of repetition-based targeted lower limb exercises were included. Study Appraisal and Synthesis MethodsThe quality of included studies was measured using an adapted version of the STROBE assessment criteria for cross-sectional studies. The studies were categorised in to three groupings: exercise detection, movement classification or measurement validation. Each study was then qualitatively summarised. ResultsFrom the 2452 articles that were identified with the search strategies, 47 papers are included in this review. ConclusionsWearable inertial sensor systems for analysing lower limb exercises are a rapidly growing technology. Research over the past ten years has predominantly focused on validating measurements that the systems produce and classifying users' exercise quality. There have been very few user evaluation studies and no clinical trials in this field to date. Key PointsInertial measurement unit (IMU) systems have been extensively validated to successfully measure joint angle and temporal features during lower limb exercises.It is less understood if IMU systems can validly compute kinetic measures pertaining to lower limb exercises.IMU systems, which incorporate machine learning in to their data analysis pathways, have also been found to be effective in automated exercise detection and in classifying movement quality across a range of lower limb exercises.3

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Trunk Position Influences the Kinematics, Kinetics, and Muscle Activity of the Lead Lower Extremity During the Forward Lunge Exercise

Cited by 133 publications

References 11 publications

Strengthening and Neuromuscular Reeducation of the Gluteus Maximus in a Triathlete with Exercise-Associated Cramping of the Hamstrings

Strengthening and Neuromuscular Reeducation of the Gluteus Maximus in a Triathlete with Exercise-Associated Cramping of the Hamstrings

ACL Strain and Tensile Forces for Weight Bearing and Non—Weight-Bearing Exercises After ACL Reconstruction: A Guide to Exercise Selection

Wearable Inertial Sensor Systems for Lower Limb Exercise Detection and Evaluation: A Systematic Review

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