keyword
https://read.qxmd.com/read/38513183/the-effect-of-different-weight-plate-widths-bumper-vs-standard-on-the-biomechanics-of-the-bench-press
#1
JOURNAL ARTICLE
Matthew J Fiedler, N Travis Triplett, Keane C Hamilton, Alan R Needle, Herman van Werkhoven
Fiedler, MJ, Triplett, NT, Hamilton, KC, Needle, AR, and van Werkhoven, H. The effect of different weight plate widths (bumper vs. standard) on the biomechanics of the bench press. J Strength Cond Res 38(4): e143-e149, 2024-Anecdotal evidence suggests that bumper plates impact lifts in powerlifting and weightlifting differently than standard cast iron plates, but whether biomechanical differences exist between lifts using bumper versus standard plates has not been investigated. Eleven resistance-trained subjects performed the bench press at 70, 80, and 90% of their 1 repetition maximum (1RM) while being blinded to whether they were lifting with bumper or standard plates...
April 1, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/38508161/influence-of-amputation-on-kinetic-chain-musculature-activity-during-basic-and-modified-core-exercises
#2
JOURNAL ARTICLE
Kaiqi Liu, Linhong Ji, Yijia Lu
PURPOSE: Core strength is vital for athletic performance, and many more exercises that involve the kinetic chain have been designed for able-bodied athletes. Disabilities that impair the kinetic chain can reduce the effectiveness of strength training. However, the impact of amputation on core strength training of people with disabilities and its underlying mechanism remains unclear. This study aimed to evaluate the muscle activation patterns and levels in athletes with amputation during 4 basic and modified weight-bearing core strength-training exercises...
March 20, 2024: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/38499998/favorable-clinical-outcomes-after-humeral-head-depressor-muscle-coactivation-training-with-emg-for-patients-with-arthroscopic-rotator-cuff-repair-a-randomized-controlled-trial
#3
JOURNAL ARTICLE
Caner Kararti, Anıl Özüdoğru, Hakkı Çağdaş Basat, İsmail Özsoy
BACKGROUND: The coactivation (Co-A) of shoulder muscles that contribute to humeral head depression can lead to mechanical unloading of the subacromial structures during abduction and thus can be beneficial for patients with arthroscopic rotator cuff repair (ARCR). The present study aims to examine the effectiveness of humeral head depressor muscle Co-A (DM-Co-A) training on clinical outcomes in a sample of patients with ARCR. HYPOTHESIS: We hypothesized that DM-Co-A training with medioinferior vector during glenohumeral exercises can improve clinical results in the rehabilitation of ARCR...
March 18, 2024: Sports Health
https://read.qxmd.com/read/38481575/quantitative-assessment-of-muscle-fatigue-during-rowing-ergometer-exercise-using-wavelet-analysis-of-surface-electromyography-semg
#4
JOURNAL ARTICLE
Natalia Daniel, Jerzy Małachowski, Kamil Sybilski, Dariusz Siemiaszko
In this paper, we present a quantitative assessment of muscle fatigue using surface electromyography (sEMG), a widely recognized method that is conducted through various analytical approaches, including analysis of spectral and time-frequency distributions. Existing research in this field has demonstrated considerable variability in the computational methods used. Although some studies highlight the efficacy of wavelet analysis in dynamic motion, few offer a comprehensive method for determining fatigue and applying it to specific movements...
2024: Frontiers in Bioengineering and Biotechnology
https://read.qxmd.com/read/38474961/detecting-psychological-interventions-using-bilateral-electromyographic-wearable-sensors
#5
JOURNAL ARTICLE
Yedukondala Rao Veeranki, Sergi Garcia-Retortillo, Zacharias Papadakis, Andreas Stamatis, Kwadwo Osei Appiah-Kubi, Emily Locke, Ryan McCarthy, Ahmed Ali Torad, Ahmed Mahmoud Kadry, Mostafa Ali Elwan, Ali Boolani, Hugo F Posada-Quintero
This study investigated the impact of auditory stimuli on muscular activation patterns using wearable surface electromyography (EMG) sensors. Employing four key muscles (Sternocleidomastoid Muscle (SCM), Cervical Erector Muscle (CEM), Quadricep Muscles (QMs), and Tibialis Muscle (TM)) and time domain features, we differentiated the effects of four interventions: silence, music, positive reinforcement, and negative reinforcement. The results demonstrated distinct muscle responses to the interventions, with the SCM and CEM being the most sensitive to changes and the TM being the most active and stimulus dependent...
February 22, 2024: Sensors
https://read.qxmd.com/read/38459686/individuals-with-chronic-ankle-instability-show-abnormalities-in-maximal-and-submaximal-isometric-strength-of-the-knee-extensor-and-flexor-muscles
#6
JOURNAL ARTICLE
Luciana Labanca, Roberto Tedeschi, Massimiliano Mosca, Mari Graziaa Benedetti
BACKGROUND: It has been shown that chronic ankle instability (CAI) leads to abnormalities in neuromuscular control of more proximal joints than the ankle. Although strength of the hip and the ankle muscles has been largely investigated providing concordant results, limited evidence with contrasting results has been reported regarding knee extensor and flexor muscles. PURPOSE: To investigate maximal and submaximal isometric muscle strength in individuals with CAI...
March 8, 2024: American Journal of Sports Medicine
https://read.qxmd.com/read/38458184/plantar-flexor-muscle-activity-and-fascicle-behavior-in-gastrocnemius-medialis-during-running-in-highly-cushioned-shoes-with-carbon-fiber-plates
#7
JOURNAL ARTICLE
Keiichiro Hata, Yuta Hamamura, Hiroaki Noro, Yohei Yamazaki, Shunsuke Nagato, Kazuyuki Kanosue, Toshio Yanagiya
The purposes of this study were to clarify the electromyography (EMG) of plantar flexors and to analyze the fascicle and tendon behaviors of the gastrocnemius medialis (GM) during running in the carbon-fiber plate embedded in thicker midsole racing shoes, such as the Nike ZoomX Vaporfly (VF) and traditional racing shoes (TRAD). We compared the fascicle and series elastic element behavior of the GM and EMG of the lower limb muscles during running (14 km/h, 45 s) in athletes wearing VF or TRAD. GM EMGs in the push-off phase were approximately 50% lower in athletes wearing VF than in TRAD...
March 7, 2024: Journal of Applied Biomechanics
https://read.qxmd.com/read/38455437/post-activation-performance-enhancement-possible-contributing-factors
#8
JOURNAL ARTICLE
Josef Fischer, Florian K Paternoster
This study aimed to narrow down the possible mechanisms of Post-Activation Performance Enhancement (PAPE), especially if they are exclusively found in the muscle. It was therefore investigated whether (1) the PAPE effect is influenced by neural factors and (2) if Post-Activation-Potentiation (PAP) influences PAPE. Thirteen strength-trained participants (26.5 ± 3.2 years) took part in at least one of three interventions (PAP, PAPE-Electrical (PAPEE), and PAPE-Voluntary (PAPEV)). Conditioning contractions (CC) and testing involved isometric knee extensions performed on an isokinetic device at an 80° knee flexion angle...
March 2024: Journal of Sports Science & Medicine
https://read.qxmd.com/read/38439774/effects-of-verbal-and-tactile-cues-on-gluteal-force-production-and-broad-jump-distance
#9
JOURNAL ARTICLE
B J Lehecka, Terra Daniels, Bryson Koester, Wyatt Kropp, Matthew Reeves, Ryan Waterson
BACKGROUND: Verbal and tactile cues can increase muscle activity, force production, and kinematics. Several studies demonstrate the effects of verbal and tactile cues on upper extremity muscles, while relatively few examined lower extremity muscles, specifically the gluteals. Studies that observed changes in gluteal function from verbal and tactile cues examined muscle activity via electromyography rather than force production or functional activities such as jumping. PURPOSE: The purpose of this study was to measure the effects of verbal and tactile cues on gluteal force production and broad jump distance...
2024: International Journal of Sports Physical Therapy
https://read.qxmd.com/read/38429941/ischemic-preconditioning-increases-spinal-excitability-and-voluntary-activation-during-maximal-plantar-flexion-contractions-in-men
#10
JOURNAL ARTICLE
Rogério Cruz, Artur Ferreira Tramontin, Anderson Souza Oliveira, Fabrizio Caputo, Benedito Sérgio Denadai, Camila Coelho Greco
The enigmatic benefits of acute limb ischemic preconditioning (IP) in enhancing muscle force and exercise performance have intrigued researchers. This study sought to unravel the underlying mechanisms, focusing on increased neural drive and the role of spinal excitability while excluding peripheral factors. Soleus Hoffmann (H)-reflex /M-wave recruitment curves and unpotentiated supramaximal responses were recorded before and after IP or a low-pressure control intervention. Subsequently, the twitch interpolation technique was applied during maximal voluntary contractions to assess conventional parameters of neural output...
March 2024: Scandinavian Journal of Medicine & Science in Sports
https://read.qxmd.com/read/38390925/muscular-strategies-for-correcting-the-pelvic-position-to-improve-posture-an-exploratory-study
#11
JOURNAL ARTICLE
Oliver Ludwig, Carlo Dindorf, Sebastian Kelm, Jens Kelm, Michael Fröhlich
The correction of postural weaknesses through the better positioning of the pelvis is an important approach in sports therapy and physiotherapy. The pelvic position in the sagittal plane is largely dependent on the muscular balance of the ventral and dorsal muscle groups. The aim of this exploratory study was to examine whether healthy persons use similar muscular activation patterns to correct their pelvic position or whether there are different motor strategies. The following muscles were recorded in 41 persons using surface electromyography (EMG): M...
January 29, 2024: Journal of Functional Morphology and Kinesiology
https://read.qxmd.com/read/38390231/the-acute-effects-of-a-stretching-and-conditioning-exercise-protocol-for-the-lower-limbs-on-gait-performance-a-proof-of-concept-and-single-blind-study
#12
JOURNAL ARTICLE
Felipe B Santinelli, Aline Prieto Silveira-Ciola, Vinicius C Moreno, Marina H Kuroda, Fabio A Barbieri
BACKGROUND: Due to improvement in movement performance, post-activation performance enhancement (PAPE) may open new possibilities to improve gait performance. However, no study has attempted to translate this phenomenon into walking. Therefore, the study aimed to test whether acute stretching followed by a conditioning exercise can improve subsequent gait performance in healthy adults. RESEARCH QUESTION: Can an exercise protocol subsequently improve gait performance? METHODS: Sixteen individuals walked four 10-m trials (in each period) before and after 7 min of an exercise protocol composed of stretching (focusing on the lower limb) and a conditioning exercise (standing calf-raise wearing a vest of 20 kg)...
2024: Frontiers in sports and active living
https://read.qxmd.com/read/38383332/does-scapular-dysfunction-alter-scapular-muscles-activity-and-kinematics-during-swim-stroke-motion-on-adolescent-swimmers
#13
JOURNAL ARTICLE
Takao Mise, Takeyasu Kurita, Shohei Kamakari, Hiroshi Akuzawa, Tomoki Oshikawa, Naoto Matsunaga, Koji Kaneoka
Scapular dyskinesis (SD) indicates dysfunction of the scapular muscle activity during the arm elevation, resulting in altered scapular kinematics. This study examined whether SD alters scapular muscle activity and kinematics during swim stroke motion. Seventeen swimmers (mean age: 13 ± 1 years) were divided into SD ( n  = 8) and control ( n = 9) groups. Scapular muscle activity (the upper, middle, and lower trapezius and the serratus anterior muscle) and kinematics data were collected and time-normalised (0-100%) during swim stroke motion by swim-bench on land...
February 21, 2024: Sports Biomechanics
https://read.qxmd.com/read/38380295/contribution-of-trunk-rotation-and-abdominal-muscles-to-sprint-kayak-performance
#14
JOURNAL ARTICLE
Mathew B Brown, Russell Peters, Lauder Mike A
Over the past two decades the importance of trunk contribution to sporting performance has been highlighted through the expanse of literature concerning core stability and strength. However, the role of trunk motion and the abdominal muscles are yet to be established during sprint kayak performance. The purpose of this study was to determine the associations among trunk rotation, kayak velocity, and abdominal muscle activity during on-water sprint kayaking. Eight international paddlers completed five 150 m sprint trials...
January 2024: Journal of Human Kinetics
https://read.qxmd.com/read/38373116/non-invasive-analysis-of-fiber-type-composition-in-lower-limb-skeletal-muscles-using-reduced-interference-rihaczek-distribution
#15
JOURNAL ARTICLE
Remya R Nair, Divya Sasidharan, Venugopal G
Fiber composition is an important factor influencing force generation and endurance of different skeletal muscles. The analysis of the heterogeneous composition of muscles has gained importance in the field of sports biomechanics and biomedicine. In this work, an attempt is made to analyze the fiber composition of Rectus femoris (type II dominant) and Soleus (type I dominant) muscles using surface electromyography. Isometric signals are acquired from the muscles of 15 participants using a well-defined protocol and are further processed using reduced interference Rihaczek distribution...
July 2023: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://read.qxmd.com/read/38366797/wearable-electronic-devices-in-parasports-a-focused-review-on-para-athlete-classification
#16
REVIEW
Louis Nikolis, Crystal Graff, Andrea Nikolis, Stephanie Tow
Wearable electronic devices are being used to evaluate movement patterns, track workload, prevent injuries, and optimize performance in athletes. Para athletes have unique characteristics to consider separately from the general population. One such difference in competitive parasports includes consideration of athlete classification systems. These sport-specific classification systems consider athletes' eligible medical conditions that lead to permanent physical, visual, and/or intellectual impairments and objectively evaluate the impact of their impairments on sport functions...
February 17, 2024: PM & R: the Journal of Injury, Function, and Rehabilitation
https://read.qxmd.com/read/38360835/assessment-of-self-report-palpation-and-surface-electromyography-dataset-during-isometric-muscle-contraction
#17
JOURNAL ARTICLE
Jihoon Lim, Lei Lu, Kusal Goonewardena, Jefferson Zhe Liu, Ying Tan
Measuring muscle fatigue involves assessing various components within the motor system. While subjective and sensor-based measures have been proposed, a comprehensive comparison of these assessment measures is currently lacking. This study aims to bridge this gap by utilizing three commonly used measures: participant self-reported perceived muscle fatigue scores, a sports physiotherapist's manual palpation-based muscle tightness scores, and surface electromyography sensors. Compensatory muscle fatigue occurs when one muscle group becomes fatigued, leading to the involvement and subsequent fatigue of other muscles as they compensate for the workload...
February 15, 2024: Scientific Data
https://read.qxmd.com/read/38359579/spatiotemporal-lower-limb-asymmetries-during-stair-descent-in-athletes-following-anterior-cruciate-ligament-reconstruction
#18
JOURNAL ARTICLE
Dario G Liebermann, Jonas L Markström, Jonas Selling, Charlotte K Häger
PURPOSE: This study evaluated motor control recovery at different times following anterior cruciate ligament reconstruction (ACLR) by investigating lower-limb spatiotemporal symmetry during stair descent performances. METHODS: We used a cross-sectional design to compare asymptomatic athletes (Controls, n = 18) with a group of people with ACLR (n = 49) divided into three time-from-ACLR subgroups (Early: <6 months, n = 17; Mid: 6-18 months, n = 16; Late: ≥18 months, n = 16)...
February 10, 2024: Journal of Electromyography and Kinesiology
https://read.qxmd.com/read/38358981/facial-electromyography-during-exercise-using-soft-electrode-array-a-feasibility-study
#19
JOURNAL ARTICLE
Rawan Ibrahim, Itay Ketko, Mickey Scheinowitz, Yael Hanein
The use of wearable sensors for real-time monitoring of exercise-related measures has been extensively studied in recent years (e.g., performance enhancement, optimizing athlete's training, and preventing injuries). Surface electromyography (sEMG), which measures muscle activity, is a widely researched technology in exercise monitoring. However, due to their cumbersome nature, traditional sEMG electrodes are limited. In particular, facial EMG (fEMG) studies in physical training have been limited, with some scarce evidence suggesting that fEMG may be used to monitor exercise-related measurements...
2024: PloS One
https://read.qxmd.com/read/38356438/anticipation-of-landing-leg-masks-ankle-inversion-orientation-deficits-and-peroneal-insufficiency-during-jump-landing-in-people-with-chronic-ankle-instability
#20
JOURNAL ARTICLE
Zongchen Hou, Wei Shen, Daniel T P Fong, Samantha L Winter
Ankle inversion orientation and peroneal activation insufficiency may contribute to lateral ankle sprains during landing in chronic ankle instability (CAI); however, how anticipation alters these factors is neglected. This study aimed to assess the impact of anticipation on joint orientation and muscle activity during landing in individuals with CAI. Fifteen participants with CAI and 15 healthy participants (control) were recruited to perform single-leg landings after bilateral countermovement jumps when the landing limb was specified before (planned) or after (unplanned) take-off...
February 2024: Scandinavian Journal of Medicine & Science in Sports
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