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https://www.readbyqxmd.com/read/28715302/characterization-of-humeral-head-displacements-during-dynamic-glenohumeral-neuromuscular-control-exercises-using-quantitative-ultrasound-imaging-a-feasibility-study
#1
Guillaume Desroches, François Desmeules, Dany H Gagnon
The objectives of the present study were to test the feasibility of measuring humeral head displacements using quantitative ultrasound imaging during the performance of two different dynamic glenohumeral neuromuscular control exercises and to investigate the influence of these exercises on the acromiohumeral distance (AHD) and anterior-posterior distance (APD). Ten individuals who have no history of shoulder injury at the non-dominant shoulder completed three repetitions of an active humeral head lowering exercise and three repetitions of a posteriorisation exercise in a random order in a seated position...
June 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28714764/abdominal-hollowing-reduces-lateral-trunk-displacement-during-single-leg-squats-in-healthy-females-but-does-not-affect-peak-hip-abduction-angle-or-knee-abductio-angle-moment
#2
Lukas D Linde, Jessica Archibald, Eve C Lampert, John Z Srbely
CONTEXT: Females suffer 4-6 times more non-contact anterior cruciate ligament (ACL) injuries than males due to neuromuscular control deficits of the hip musculature leading to increases in hip adduction angle, knee abduction angle, and knee abduction moment during dynamic tasks such as single-leg squats. Lateral trunk displacement has been further related to ACL injury risk in females, leading to the incorporation of core strength/stability exercises in ACL preventative training programs...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28704312/trunk-muscle-activation-in-the-back-and-hack-squat-at-the-same-relative-loads
#3
David R Clark, Michael I Lambert, Angus M Hunter
The hack squat (HS) is likely to produce a greater 1 repetition maximum (1RM) compared to the back squat (BS). This can be attributed to the support of the trunk during the HS compared to no support during BS. This support however, may compromise trunk muscle activation (TMA), therefore producing different training adaptations. Accordingly, the purpose of this study was to compare 1RM in BS and HS and TMA at 4 relative loads, 65, 75, 85 and 95% of maximal system mass. Ten males completed 3 test sessions:1) BS and HS 1RM, 2) HS & BS neuromuscular test familiarization, and, 3) Neuromuscular test for 3 reps at 4 loads for BS and HS...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28694199/initiation-of-non-invasive-ventilation-for-sleep-related-hypoventilation-disorders-advanced-modes-and-devices
#4
REVIEW
Bernardo J Selim, Lisa Wolfe, John M Coleman, Naresh Dewan
Although non-invasive ventilation (NIV) has been used since the 1960's in the polio epidemic, the development of modern bilevel PAP devices did not become a reality until the 1990's. Over the last 25 years bilevel PAP technology options have exponentially increased. The number of patients receiving this treatment both in the acute setting as well as at home is steadily growing. However, a knowledge gap exists in the way these device settings are adjusted to achieve synchrony and match patient's unique respiratory failure physiology...
July 7, 2017: Chest
https://www.readbyqxmd.com/read/28682215/could-slackline-training-complement-the-fifa-11-programme-regarding-training-of-neuromuscular-control
#5
Tobias Jäger, Julian Kiefer, Inge Werner, Peter A Federolf
The current study compared changes in neuromuscular control between slackline training and the stabilization training elements of the FIFA 11+ programme. Twenty-five students in 2 groups performed a 12-unit training programme. The slackline training group (n = 13) exclusively trained with a slackline. The stabilization training group (n = 12) practised exercises as described in the second part of the FIFA 11+ programme. Improvements in balance were assessed using three tests for dynamic, quasi-static, and perturbed postural control: the star excursion balance test (SEBT), the closed-eye single-leg stance, and the MFT S3-Check...
July 6, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28676752/an-adaptive-neuromuscular-controller-for-assistive-lower-limb-exoskeletons-a-preliminary-study-on-subjects-with-spinal-cord-injury
#6
Amy R Wu, Florin Dzeladini, Tycho J H Brug, Federica Tamburella, Nevio L Tagliamonte, Edwin H F van Asseldonk, Herman van der Kooij, Auke J Ijspeert
Versatility is important for a wearable exoskeleton controller to be responsive to both the user and the environment. These characteristics are especially important for subjects with spinal cord injury (SCI), where active recruitment of their own neuromuscular system could promote motor recovery. Here we demonstrate the capability of a novel, biologically-inspired neuromuscular controller (NMC) which uses dynamical models of lower limb muscles to assist the gait of SCI subjects. Advantages of this controller include robustness, modularity, and adaptability...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28658071/a-review-of-field-based-assessments-of-neuromuscular-control-and-their-utility-in-male-youth-soccer-players
#7
Paul J Read, Jon L Oliver, Mark B A De Ste Croix, Gregory D Myer, Rhodri S Lloyd
Lower extremity injuries in male youth soccer are common and equate to a substantial time-loss from training and competitions during the course of a season. Extended periods of absence will impact player involvement in skill and physical development activities, as well as participation in competitive match play. Neuromuscular risk factors for lower extremity injury in male youth soccer players can be categorized into quadriceps dominance; leg dominance; ligament dominance; trunk dominance and reduced dynamic stability...
June 22, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28656531/acl-injury-prevention-what-does-research-tell-us
#8
REVIEW
Trent Nessler, Linda Denney, Justin Sampley
PURPOSE OF REVIEW: Mechanisms leading to anterior cruciate ligament (ACL) injury have been identified, yet re-injury or a secondary injury persists in the athletic population. The purpose of this review is to identify risk factors associated with ACL injury and investigate programs to prevent injury. RECENT FINDINGS: Faulty mechanics during dynamic movement that cause excessive valgus force at the knee increases the risk of ACL injury. Faulty mechanics may be a result of lateral displacement of the trunk, unequal limb loading, and lack of control to avoid the valgus knee position...
June 27, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28650414/combined-thoracic-ultrasound-assessment-during-a-successful-weaning-trial-predicts-postextubation-distress
#9
Stein Silva, Dalinda Ait Aissa, Pierre Cocquet, Lucille Hoarau, Jean Ruiz, Fabrice Ferre, David Rousset, Michel Mora, Arnaud Mari, Olivier Fourcade, Béatrice Riu, Samir Jaber, Bénoît Bataille
BACKGROUND: Recent studies suggest that isolated sonographic assessment of the respiratory, cardiac, or neuromuscular functions in mechanically ventilated patients may assist in identifying patients at risk of postextubation distress. The aim of the present study was to prospectively investigate the value of an integrated thoracic ultrasound evaluation, encompassing bedside respiratory, cardiac, and diaphragm sonographic data in predicting postextubation distress. METHODS: Longitudinal ultrasound data from 136 patients who were extubated after passing a trial of pressure support ventilation were measured immediately after the start and at the end of this trial...
June 23, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28647693/recognition-investigation-and-management-of-mitochondrial-disease
#10
REVIEW
James E Davison, Shamima Rahman
Mitochondria are dynamic organelles present in virtually all human cells that are needed for a multitude of cellular functions, including energy production, control of cell apoptosis and numerous biochemical catabolic and synthetic pathways that are critical for cellular health. Primary mitochondrial disorders are a group of greater than 200 single gene defects arising from two genomes (nuclear and mitochondrial) leading to mitochondrial dysfunction, and are associated with extremely heterogeneous phenotypes...
June 24, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28636840/influence-of-sex-on-performance-fatigability-of-the-plantar-flexors-following-repeated-maximal-dynamic-shortening-contractions
#11
Amelia C Lanning, Geoffrey Alonzo Power, Anita D Christie, Brian H Dalton
The purpose was to determine sex-differences in fatigability during maximal, unconstrained velocity, shortening plantar flexions. The role of time-dependent measures (i.e., rate of torque development (RTD), rate of velocity development (RVD), rate of neuromuscular activation) in such sex-related differences was also examined. By task termination, females exhibited less reductions in power and similar changes in rate of neuromuscular activation than males, indicating females were less fatigable than males.
June 21, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28626327/the-effects-of-dynamic-exercise-using-the-proprioceptive-neuromuscular-facilitation-pattern-on-posture-in-healthy-adults
#12
Misuk Cho, Wontae Gong
[Purpose] The purpose of this study is to examine the effects of dynamic exercise utilizing the proprioceptor neuromuscular facilitation pattern accompanied by abdominal drawing-in exercises on posture in healthy adults. [Subjects and Methods] The total number of subjects were 32; 16 were randomly placed in the training group, and the remaining 16 made up the control group. The subjects in the training group conducted 5 sets of dynamic exercises utilizing the proprioceptor neuromuscular facilitation patterns each day, 3 times a week for 6 weeks...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28620310/abdominal-binding-improves-neuromuscular-efficiency-of-the-human-diaphragm-during-exercise
#13
Sara J Abdallah, David S Chan, Robin Glicksman, Cassandra T Mendonca, Yuanming Luo, Jean Bourbeau, Benjamin M Smith, Dennis Jensen
We tested the hypothesis that elastic binding of the abdomen (AB) would enhance neuromuscular efficiency of the human diaphragm during exercise. Twelve healthy non-obese men aged 24.8 ± 1.7 years (mean ± SE) completed a symptom-limited constant-load cycle endurance exercise test at 85% of their peak incremental power output with diaphragmatic electromyography (EMGdi) and respiratory pressure measurements under two randomly assigned conditions: unbound control (CTRL) and AB sufficient to increase end-expiratory gastric pressure (Pga,ee) by 5-8 cmH2O at rest...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28607632/mitochondrial-transfer-from-wharton-s-jelly-mesenchymal-stem-cell-to-merrf-cybrid-reduces-oxidative-stress-and-improves-mitochondrial-bioenergetics
#14
Yao-Chung Chuang, Chia-Wei Liou, Shang-Der Chen, Pei-Wen Wang, Jiin-Haur Chuang, Mao-Meng Tiao, Te-Yao Hsu, Hung-Yu Lin, Tsu-Kung Lin
Myoclonus epilepsy associated with ragged-red fibers (MERRF) is a maternally inherited mitochondrial disease affecting neuromuscular functions. Mt.8344A>G mutation in mitochondrial DNA (mtDNA) is the most common cause of MERRF syndrome and has been linked to an increase in reactive oxygen species (ROS) level and oxidative stress, as well as impaired mitochondrial bioenergetics. Here, we tested whether WJMSC has therapeutic potential for the treatment of MERRF syndrome through the transfer of mitochondria...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28605232/sensorimotor-control-of-the-shoulder-in-professional-volleyball-players-with-isolated-infraspinatus-muscle-atrophy
#15
Samuele Contemori, Andrea Biscarini, Fabio Massimo Botti, Daniele Busti, Roberto Panichi, Vito Enrico Pettorossi
CONTEXT: Isolated infraspinatus muscle atrophy (IIMA) only affects the hitting shoulder of overhead-activity athletes, and is caused by suprascapular nerve neuropathy. No study has assessed the static and dynamic stability of the shoulder in overhead professional athletes with IIMA to reveal possible shoulder sensorimotor alterations. OBJECTIVE: To assess the shoulder static stability, dynamic stability, and strength in professional volleyball players with IIMA and in healthy control players...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28603786/how-anterior-cruciate-ligament-injury-was-averted-during-knee-collapse-in-a-nba-point-guard
#16
Nathan D Schilaty, Nathaniel A Bates, Aaron J Krych, Timothy E Hewett
Non-contact anterior cruciate ligament (ACL) injuries occur with rapid decelerations and pivoting. A recent injury to a high-level National Basketball Association (NBA) player demonstrated neuromuscular control and injury-sparing mechanisms that resulted in only minor ligament injury to the medial collateral ligament. We analyzed biomechanical mechanisms via publically available orthogonal 2-D video to demonstrate how this potential ACL injury was averted. Analysis of the knee injury mechanism demonstrated that the NBA player experienced low ground reaction force, high sagittal plane flexion, and maintenance of frontal plane stability with neuromuscular control...
2017: Ann Musculoskelet Med
https://www.readbyqxmd.com/read/28601095/reactive-stepping-with-functional-neuromuscular-stimulation-in-response-to-forward-directed-perturbations
#17
Alexander J Hunt, Brooke M Odle, Lisa M Lombardo, Musa L Audu, Ronald J Triolo
BACKGROUND: Implanted motor system neuroprostheses can be effective at increasing personal mobility of persons paralyzed by spinal cord injuries. However, currently available neural stimulation systems for standing employ patterns of constant activation and are unreactive to changing postural demands. METHODS: In this work, we developed a closed-loop controller for detecting forward-directed body disturbances and initiating a stabilizing step in a person with spinal cord injury...
June 10, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28598910/power-training-induced-increases-in-muscle-activation-during-gait-in-old-adults
#18
Chantal M I Beijersbergen, Urs Granacher, Martijn Gäbler, Paul DeVita, Tibor Hortobágyi
INTRODUCTION/PURPOSE: Aging modifies neuromuscular activation of agonist and antagonist muscles during walking. Power training can evoke adaptations in neuromuscular activation that underlie gains in muscle strength and power but it is unknown if these adaptations transfer to dynamic tasks such as walking. We examined the effects of lower extremity power training on neuromuscular activation during level gait in old adults. METHODS: Twelve community dwelling old adults (age ≥ 65 years) completed a 10-week lower extremity power-training program and thirteen old adults completed a 10-week control period...
June 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28593083/dynamic-oscillatory-stretching-efficacy-on-hamstring-extensibility-and-stretch-tolerance-a-randomized-controlled-trial
#19
Arie Michaeli, Jason Cameron Tee, Aimee Stewart
BACKGROUND: While static stretch (SS), proprioceptive neuromuscular facilitation (PNF) and oscillatory physiological mobilization techniques are documented to have positive effects on a range of motion (ROM), there are no reports on the effect of dynamic oscillatory stretching (DOS), a technique that combines these three techniques, on hamstring extensibility. PURPOSE: To determine whether DOS improves hamstring extensibility and stretch tolerance to a greater degree than SS in asymptomatic young participants...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28582897/reflex-mediated-dynamic-neuromuscular-stabilization-in-stroke-patients-emg-processing-and-ultrasound-imaging
#20
Hyun S Yoon, Joshua Sung H You
BACKGROUND: Postural core instability is associated with poor dynamic balance and a high risk of serious falls. Both neurodevelopmental treatment (NDT) and dynamic neuromuscular stabilization (DNS) core stabilization exercises have been used to improve core stability, but the outcomes of these treatments remain unclear. OBJECTIVE: This study was undertaken to examine the therapeutic effects of NDT and DNS core stabilization exercises on muscular activity, core stability, and core muscle thickness...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
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