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https://www.readbyqxmd.com/read/27895550/closed-loop-task-difficulty-adaptation-during-virtual-reality-reach-to-grasp-training-assisted-with-an-exoskeleton-for-stroke-rehabilitation
#1
Florian Grimm, Georgios Naros, Alireza Gharabaghi
Stroke patients with severe motor deficits of the upper extremity may practice rehabilitation exercises with the assistance of a multi-joint exoskeleton. Although this technology enables intensive task-oriented training, it may also lead to slacking when the assistance is too supportive. Preserving the engagement of the patients while providing "assistance-as-needed" during the exercises, therefore remains an ongoing challenge. We applied a commercially available seven degree-of-freedom arm exoskeleton to provide passive gravity compensation during task-oriented training in a virtual environment...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27893476/comparison-of-muscle-involvement-and-posture-between-the-conventional-deadlift-and-a-walk-in-style-deadlift-machine
#2
Benjamin J Snyder, Courtney P Cauthen, Scott R Senger
The deadlift exercise is one of the most effective exercises for developing lower-body strength; however, technique errors can lead to low back injuries. The use of a 'walk-in' deadlift machine removes the weight bar by using a lever system with independent handles on either side of the body. Theoretically, this would allow alignment of the load with the center of gravity, encouraging a more upright torso and decreasing the involvement of the low back extensors. This study compared trunk angle, knee angle and electrical activity of key muscles between the conventional deadlift (CDL) and two foot positions (ball of foot or toe alignment) with pronated grip, (called BallPro and ToePro) of a walk-in deadlift machine among high-skilled and low-skilled lifters...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27890536/estimation-of-the-center-of-rotation-using-wearable-magneto-inertial-sensors
#3
M Crabolu, D Pani, L Raffo, A Cereatti
Determining the center of rotation (CoR) of joints is fundamental to the field of human movement analysis. CoR can be determined using a magneto-inertial measurement unit (MIMU) using a functional approach requiring a calibration exercise. We systematically investigated the influence of different experimental conditions that can affect precision and accuracy while estimating the CoR, such as (a) angular joint velocity, (b) distance between the MIMU and the CoR, (c) type of the joint motion implemented, (d) amplitude of the angular range of motion, (e) model of the MIMU used for data recording, (f) amplitude of additive noise on inertial signals, and (g) amplitude of the errors in the MIMU orientation...
November 16, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27887872/optimizing-the-rehabilitation-of-elbow-lateral-collateral-ligament-injuries-a-biomechanical-study
#4
Ranita H K Manocha, Jonathan R Kusins, James A Johnson, Graham J W King
BACKGROUND: Elbow lateral collateral ligament (LCL) injury may arise after trauma or lateral surgical approaches. The optimal method of rehabilitating the LCL-insufficient elbow is unclear. Therapists often prescribe active motion exercises with the forearm pronated. Recently, overhead exercises have become popular as they may enable gravity to compress the elbow joint, improving stability, although this has not been proved biomechanically. This investigation aimed to quantify the effects of several variables used in LCL injury rehabilitation on elbow stability...
November 22, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27765712/walking-balance-and-compensatory-gait-mechanisms-in-surgically-treated-patients-with-adult-spinal-deformity
#5
Mitsuru Yagi, Hideaki Ohne, Tsunehiko Konomi, Kanehiro Fujiyoshi, Shinjiro Kaneko, Masakazu Takemitsu, Masafumi Machida, Yoshiyuki Yato, Takashi Asazuma
BACKGROUND CONTEXT: Gait patterns and their relationship to demographic and radiographic data in patients with adult spinal deformity (ASD) have not been fully documented. PURPOSE: To assess gait pattern in patients with ASD and the effect of corrective spinal surgery on gait. STUDY DESIGN/SETTING: Prospective case series. PATIENT SAMPLE: The gait patterns of 33 consecutive female with ASD (age 67.1 years; body mass index (BMI) 22...
October 17, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27754783/the-effects-of-fast-bowling-fatigue-and-adhesive-taping-on-shoulder-joint-position-sense-in-amateur-cricket-players-in-victoria-australia
#6
Nivan Weerakkody, Trevor Allen
The impact that muscle fatigue and taping have on proprioception in an applied sporting context remains unclear. The purpose of this study was to investigate disturbances in position sense at the shoulder joint, and asses the effectiveness of adhesive tape in preventing injury and improving performance, after a bout of cricket fast bowling. Among amateur cricket players (N = 14), shoulder position sense, maximum voluntary contraction (MVC) force and bowling accuracy was assessed before and immediately after a fatiguing exercise bout of fast bowling...
October 18, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27710146/high-prevalence-of-dehydration-and-inadequate-nutritional-knowledge-among-university-and-club-level-athletes
#7
Pamela J Magee, Alison M Gallagher, Jacqueline M McCormack
Although dehydration of ≥2% body weight (BW) loss significantly impairs endurance performance, dehydration remains prevalent among athletes and may be owing to a lack of knowledge in relation to fluid requirements. The aim of this study was to assess the hydration status of university/club level athletes (n=430) from a range of sports/activities (army officer cadet training; bootcamp training; cycling; Gaelic Athletic Association camogie, football and hurling; golf; hockey; netball; rugby; running (sprinting and endurance); Shotokan karate and soccer) immediately before and after training/competition and to assess their nutritional knowledge...
October 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27677888/a-new-method-for-self-paced-peak-performance-testing-on-a-treadmill
#8
Kenneth J Hunt, Prasanna Anandakumaran, Jonas A Loretz, Jittima Saengsuwan
PURPOSE: Self-paced maximal testing methods may be able to exploit central mediation of function-limiting fatigue and therefore have potential to generate more valid estimates of peak oxygen uptake. The aim of this study was to investigate the feasibility of a new method for self-paced peak performance testing on treadmills and to compare peak and submaximal performance outcomes with those obtained using a non-self-paced ('computer-paced') method employing predetermined speed and slope profiles...
September 28, 2016: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/27630431/effect-of-home-based-training-using-a-slant-board-with-dorsiflexed-ankles-on-walking-function-in-post-stroke-hemiparetic-patients
#9
Yasuhide Nakayama, Setsu Iijima, Wataru Kakuda, Masahiro Abo
[Purpose] To investigate the effects of a 30-day rehabilitation program using a slant board on walking function in post-stroke hemiparetic patients. [Subjects and Methods] Six hemiparetic patients with gait disturbance were studied. The patients were instructed to perform a home-based rehabilitation program using a slant board, thrice daily for 30 days, the exercise included standing on the slant board for 3 minutes, with both ankles dorsiflexed without backrest. For all patients, the Brunnstrom Recovery Stage, Barthel Index, range of motion of the ankle joint, modified Ashworth scale scole for calf muscle, sensory impairments with Numeral Rating Scale, maximum walking speed, number of steps, and Timed "Up and Go" test were serially evaluated at the beginning and end of the 30-day program...
August 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27555805/hybrid-neuroprosthesis-for-the-upper-limb-combining-brain-controlled-neuromuscular-stimulation-with-a-multi-joint-arm-exoskeleton
#10
Florian Grimm, Armin Walter, Martin Spüler, Georgios Naros, Wolfgang Rosenstiel, Alireza Gharabaghi
Brain-machine interface-controlled (BMI) neurofeedback training aims to modulate cortical physiology and is applied during neurorehabilitation to increase the responsiveness of the brain to subsequent physiotherapy. In a parallel line of research, robotic exoskeletons are used in goal-oriented rehabilitation exercises for patients with severe motor impairment to extend their range of motion (ROM) and the intensity of training. Furthermore, neuromuscular electrical stimulation (NMES) is applied in neurologically impaired patients to restore muscle strength by closing the sensorimotor loop...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27459844/analysis-of-reaching-movements-of-upper-arm-in-robot-assisted-exercises-kinematic-assessment-of-robot-assisted-upper-arm-reaching-single-joint-movements
#11
Luigi Iuppariello, Giovanni D'Addio, Maria Romano, Paolo Bifulco, Bernardo Lanzillo, Nicola Pappone, Mario Cesarelli
Robot-mediated therapy (RMT) has been a very dynamic area of research in recent years. Robotics devices are in fact capable to quantify the performances of a rehabilitation task in treatments of several disorders of the arm and the shoulder of various central and peripheral etiology. Different systems for robot-aided neuro-rehabilitation are available for upper limb rehabilitation but the biomechanical parameters proposed until today, to evaluate the quality of the movement, are related to the specific robot used and to the type of exercise performed...
April 2016: Giornale Italiano di Medicina del Lavoro Ed Ergonomia
https://www.readbyqxmd.com/read/27451589/respiratory-rehabilitation-in-healing-depression-and-anxiety-in-copd-patients
#12
Maria-Mădălina Bodescu, Adina Magdalena Turcanu, Maria-Cristina Gavrilescu, T Mihăescu
UNLABELLED: Chronic Obstructive Pulmonary Disease (COPD) is an inflammatory affection of the whole lung, characterized by an accelerated loss of the pulmonary functions, that reduces the patients' independence and stops them from having a normal, active life. The medical rehabilitation is considered "Third class rehabilitation", after preventive medicine and pharmaceutical medicine, and the respiratory rehabilitation recovery represents a complex structure of service addressing to patients with chronic pulmonary illnesses whose aim is to optimize the physical performances, psycho-social and autonomy...
October 2015: Pneumologia: Revista Societății Române de Pneumologie
https://www.readbyqxmd.com/read/27445658/closed-loop-neuroprosthesis-for-reach-to-grasp-assistance-combining-adaptive-multi-channel-neuromuscular-stimulation-with-a-multi-joint-arm-exoskeleton
#13
Florian Grimm, Alireza Gharabaghi
Stroke patients with severe motor deficits cannot execute task-oriented rehabilitation exercises with their affected upper extremity. Advanced rehabilitation technology may support them in performing such reach-to-grasp movements. The challenge is, however, to provide assistance as needed, while maintaining the participants' commitment during the exercises. In this feasibility study, we introduced a closed-loop neuroprosthesis for reach-to-grasp assistance which combines adaptive multi-channel neuromuscular stimulation with a multi-joint arm exoskeleton...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27445655/compensation-or-restoration-closed-loop-feedback-of-movement-quality-for-assisted-reach-to-grasp-exercises-with-a-multi-joint-arm-exoskeleton
#14
Florian Grimm, Georgios Naros, Alireza Gharabaghi
Assistive technology allows for intensive practice and kinematic measurements during rehabilitation exercises. More recent approaches attach a gravity-compensating multi-joint exoskeleton to the upper extremity to facilitate task-oriented training in three-dimensional space with virtual reality feedback. The movement quality, however, is mostly captured through end-point measures that lack information on proximal inter-joint coordination. This limits the differentiation between compensation strategies and genuine restoration both during the exercise and in the course of rehabilitation...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27426699/low-and-moderate-doses-of-caffeine-late-in-exercise-improve-performance-in-trained-cyclists
#15
Jason L Talanian, Lawrence L Spriet
The aim of the present study was to assess if low and moderate doses of caffeine delivered in a carbohydrate-electrolyte solution (CES) late in exercise improved time-trial (TT) performance. Fifteen (11 male, 4 female) cyclists (age, 22.5 ± 0.9 years; body mass, 69.3 ± 2.6 kg; peak oxygen consumption, 64.6 ± 1.9 mL·min(-1)·kg(-1)) completed 4 double-blinded randomized trials. Subjects completed 120 min of cycling at ∼60% peak oxygen consumption with 5 interspersed 120-s intervals at ∼82% peak oxygen consumption, immediately followed by 40-s intervals at 50 W...
August 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27418422/three-dimensional-virtual-reality-vestibular-rehabilitation-for-chronic-imbalance-problem-caused-by-m%C3%A3-ni%C3%A3-re-s-disease-a-pilot-study
#16
Su-Yi Hsu, Te-Yung Fang, Shih-Ching Yeh, Mu-Chun Su, Pa-Chun Wang, Victoria Y Wang
PURPOSES: The purpose of this study was to evaluate a three-dimensional, virtual reality system for vestibular rehabilitation in patients with intractable Ménière's disease and chronic vestibular dysfunction. METHODS: We included 70 patients (36 for study, 34 as control) with a chronic imbalance problem caused by uncompensated Ménière's disease. The virtual reality vestibular rehabilitation comprised four training tasks (modified Cawthorne-Cooksey exercises: eye, head, extension, and coordination exercises) performed in six training sessions (in 4 weeks)...
July 15, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27338452/effects-of-beer-non-alcoholic-beer-and-water-consumption-before-exercise-on-fluid-and-electrolyte-homeostasis-in-athletes
#17
Mauricio Castro-Sepulveda, Neil Johannsen, Sebastián Astudillo, Carlos Jorquera, Cristian Álvarez, Hermann Zbinden-Foncea, Rodrigo Ramírez-Campillo
Fluid and electrolyte status have a significant impact on physical performance and health. Pre-exercise recommendations cite the possibility of consuming beverages with high amounts of sodium. In this sense, non-alcoholic beer can be considered an effective pre-exercise hydration beverage. This double-blind, randomized study aimed to compare the effect of beer, non-alcoholic beer and water consumption before exercise on fluid and electrolyte homeostasis. Seven male soccer players performed 45 min of treadmill running at 65% of the maximal heart rate, 45 min after ingesting 0...
2016: Nutrients
https://www.readbyqxmd.com/read/27293508/utilization-of-an-anti-gravity-treadmill-in-a-physical-activity-program-with-female-breast-cancer-survivors-a-pilot-study
#18
Ciaran M Fairman, Kristina L Kendall, Brandonn S Harris, Kenneth J Crandall, Jim McMillan
Breast Cancer survivors can experience a myriad of physical and psychological benefits as a result of regular exercise. This study aimed to build on previous research using lower impact exercise programs by using an antigravity (Alter-G(®)) treadmill to administer cardiovascular training. The purpose of this study was to determine the effectiveness a physical activity program, including an Alter-G(®) treadmill, for improving physiological and psychosocial measures in female breast cancer survivors. A 14-week intervention using an AB-AB study design was employed...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27241510/effect-of-simulated-microgravity-and-lunar-gravity-on-human-inspiratory-muscle-function-selena-t-2015-study
#19
M O Segizbaeva, N P Aleksandrova, Z A Donina, E V Baranova, V P Katuntsev, G G Tarasenkov, V M Baranov
As a part of the multi-disciplinary "SELENA-T"-2015 Bed Rest Study, we investigated the pattern of inspiratory muscles fatigue in 22 healthy male subjects during incremental exercise test to exhaustion before and after 21 days of hypokinesia evoked by bed rest. Hypokinesia consisted of head-down bed rest (HDBR) at a minus 6° angle, simulating microgravity present on orbiting spacecraft, in 10 subjects. The remaining 12 subjects spent the first 5 days of hypokinesia in HDBR position and the subsequent 16 days in head-up bed rest (HUBR) at a plus 9...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27167471/influence-of-exercise-in-normal-and-hot-ambient-conditions-on-the-pharmacokinetics-of-inhaled-terbutaline-in-trained-men
#20
M Kreiberg, V Becker, S Jessen, S Rzeppa, P Hemmersbach, V Backer, M Hostrup
This study investigated the pharmacokinetics of inhaled terbutaline at rest and after exercise in normal and hot ambient conditions with respect to doping analysis. Thirteen trained young men participated in the study. Urine and blood samples were collected after inhalation of 4 mg terbutaline during three trials: exercise in hot ambient conditions (30-35 °C) (EXH), exercise in normal ambient conditions (20-25 °C) (EX), and rest (20-25 °C) (R). Exercise consisted of 130 min at various intensities. Adjustment of urine concentrations of terbutaline to a specific gravity (USG) of 1...
May 11, 2016: Scandinavian Journal of Medicine & Science in Sports
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