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https://www.readbyqxmd.com/read/29036874/development-of-a-device-to-reduce-the-risk-of-injury-in-handling-unstable-loads
#1
Mohamed Zaki Ramadan, Mohammed Alkahtani
BACKGROUND: Manual material handling (MMH) task is the most common cause of work-related musculoskeletal disorders (MSDs). Operators carrying unstable loads were recently shown to be at greater risk of back injury compared to workers carrying stable loads. OBJECTIVE: This study focused on developing a device to minimize trunk muscle activity and cardiovascular demand while handling a 19-liter bottle. METHOD: After evaluating several designs, one was selected to be developed, manufactured and tested through an experimental study...
October 10, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29032000/everyday-multitasking-habits-university-students-seamlessly-text-and-walk-on-a-split-belt-treadmill
#2
Dorelle Clare Hinton, Yeu-Yao Cheng, Caroline Paquette
With increasing numbers of adults owning a cell phone, walking while texting has become common in daily life. Previous research has shown that walking is not entirely automated and when challenged with a secondary task, normal walking patterns are disrupted. This study investigated the effects of texting on the walking patterns of healthy young adults while walking on a split-belt treadmill. Following full adaptation to the split-belt treadmill, thirteen healthy adults (23±3years) walked on a tied-belt and split-belt treadmill, both with and without a simultaneous texting task...
October 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29031338/normal-changes-in-gait-and-mobility-problems-in-the-elderly
#3
REVIEW
Maricarmen Cruz-Jimenez
There are normal physiologic changes that occur as people age. Gait and mobility are altered with aging, and these changes are a combination of alterations in the gait pattern and in the function of organs. Changes in gait are associated with functional decline, less independence, and impaired quality of life. Reduced walking speed is the most consistent age-related change, but there are other contributors to an altered gait: impaired balance and stability, lower extremity strength, and the fear of falling.
November 2017: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/29031140/the-effects-of-real-and-artificial-leg-length-discrepancy-on-mechanical-work-and-energy-cost-during-the-gait
#4
T F Assogba, S Boulet, C Detrembleur, P Mahaudens
BACKGROUND: The impacts of Leg Length Discrepancy (LLD) on the kinematic and dynamic parameters of walking have been widely discussed. But little is known on total mechanical work and energy cost. These two variables are more representative of the functional impairment undergone by the LLD patients. AIM: To assess the changes of the mechanical work and energy cost of walking in subjects with real LLD and to compare their results with healthy subjects in whom the LLD has been simulated...
October 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29031138/similarity-of-muscle-synergies-extracted-from-the-lower-limb-including-the-deep-muscles-between-level-and-uphill-treadmill-walking
#5
Akira Saito, Aya Tomita, Ryosuke Ando, Kohei Watanabe, Hiroshi Akima
This study aimed to examine muscle synergies involving the deeper muscles of the lower limb during level and uphill treadmill walking. Seven men and five women walked on a treadmill at three speeds (60, 80, and 100m/min) and two grades (level and 10% grade). Surface electromyographic (EMG) signals were recorded from 10 muscles of the lower limb, including vastus intermedius, adductor magnus, and adductor longus. Muscle synergies were extracted applying non-negative matrix factorization, and the relative co-activation across muscles and the temporal information of synergy recruitment were identified by the muscle synergy vector and synergy activation coefficient, respectively...
October 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29031137/the-association-between-habitual-walking-speed-and-medial-femoral-cartilage-deformation-following-30minutes-of-walking
#6
Matthew S Harkey, J Troy Blackburn, Hope Davis, Leslie Sierra-Arévalo, Daniel Nissman, Brian Pietrosimone
Habitual walking speed is a key functional outcome that has implications for knee biomechanics that occur during gait. Lower extremity biomechanics during walking affects the loading of the femoral cartilage. Ultrasonography (US) can be used to assess resting femoral cartilage thickness and acute cartilage deformation in response to walking. The purpose of this study was to determine the association between habitual walking speed and both resting femoral cartilage thickness and deformation. Twenty-four healthy participants with no history of knee injury volunteered for this study...
October 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29031023/whole-body-vibration-combined-with-treadmill-training-improves-walking-performance-in-post-stroke-patients-a-randomized-controlled-trial
#7
Wonjae Choi, Donghun Han, Junesun Kim, Seungwon Lee
BACKGROUND Stroke is characterized by an asymmetrical gait pattern that causes poor stability and reduces overall activity levels. The aim of this study was to investigate the effect of whole-body vibration combined with treadmill training (WBV-TT) on walking performance in patients with chronic stroke. MATERIAL AND METHODS Thirty ambulatory chronic stroke patients were randomly allocated to the WBV-TT group or the treadmill training (TT) group. The participants in the WBV-TT group performed 6 types of exercises on a vibrating platform for 4...
October 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29029240/a-greater-extent-of-insomnia-symptoms-and-physician-recommended-sleep-medication-use-predict-fall-risk-in-community-dwelling-older-adults
#8
Tuo-Yu Chen, Soomi Lee, Orfeu M Buxton
Study Objectives: Cross-sectional studies suggest that insomnia symptoms are associated with falls in later life. This longitudinal study examines the independent and interactive effects of the extent of insomnia symptoms (i.e., multiple co-existing insomnia symptoms) and sleep medications on fall risk over a 2-year follow-up among community-dwelling older adults. Methods: Using data from the Health and Retirement Study (2006-2014, N = 6882, Mage = 74.5 years ± 6...
October 3, 2017: Sleep
https://www.readbyqxmd.com/read/29028621/combining-valgus-knee-brace-and-lateral-foot-wedges-reduces-external-forces-and-moments-in-osteoarthritis-patients
#9
Amir Ali Jafarnezhadgero, Anderson S Oliveira, Seyed Hamed Mousavi, Morteza Madadi-Shad
Osteoarthritis progression can be related to the external knee adduction and flexion moments during walking. Lateral foot wedges and knee braces have been used as treatment for osteoarthritis, but little is known about their influence on knee joint moments generated in the sagittal and frontal planes. Therefore, the aim of the present study was determine the effects of the isolated and combined use of valgus knee brace and lateral wedge foot orthotic on peak forces and moments during gait in knee osteoarthritis patients...
October 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29023635/intermittent-gait-disturbance-in-idiopathic-normal-pressure-hydrocephalus
#10
Y Nikaido, Y Kajimoto, A Tucker, K Kuroda, H Ohno, T Akisue, R Saura, T Kuroiwa
OBJECTIVES: We identified intermittent gait disturbance (IGD) observed in the mild stage of idiopathic normal pressure hydrocephalus (iNPH). The first purpose of this study was to clarify the temporal gait profile of IGD during long-distance gait. The second purpose was to confirm the difference in treatment effect after cerebrospinal fluid (CSF) shunting in patients with and without IGD. MATERIALS AND METHODS: Fourteen consecutive iNPH patients with mild gait disturbance with a timed up-and-go (TUG) of <20 seconds were prospectively enrolled in the study...
October 11, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29023456/gait-parameters-are-differently-affected-by-concurrent-smartphone-based-activities-with-scaled-levels-of-cognitive-effort
#11
Carlotta Caramia, Ivan Bernabucci, Carmen D'Anna, Cristiano De Marchis, Maurizio Schmid
The widespread and pervasive use of smartphones for sending messages, calling, and entertainment purposes, mainly among young adults, is often accompanied by the concurrent execution of other tasks. Recent studies have analyzed how texting, reading or calling while walking-in some specific conditions-might significantly influence gait parameters. The aim of this study is to examine the effect of different smartphone activities on walking, evaluating the variations of several gait parameters. 10 young healthy students (all smartphone proficient users) were instructed to text chat (with two different levels of cognitive load), call, surf on a social network or play with a math game while walking in a real-life outdoor setting...
2017: PloS One
https://www.readbyqxmd.com/read/29023271/dual-task-tandem-gait-and-average-walking-speed-in-healthy-collegiate-athletes
#12
David R Howell, Jessie R Oldham, William P Meehan, Melissa S DiFabio, Thomas A Buckley
OBJECTIVES: To (1) examine the association between a commonly used concussion test, tandem gait, in single/dual-task conditions with single-task and dual-task average walking speed, (2) characterize the prevalence of tandem gait false positives, and (3) develop a normative reference range of dual-task tandem gait times. DESIGN: Cross-sectional study. SETTING: Two NCAA collegiate athletic facilities. INDEPENDENT VARIABLES: Athletes completed the tandem gait test and a gait evaluation in single/dual-task conditions during a preseason examination...
October 5, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29021757/cerebral-small-vessel-disease-burden-is-associated-with-motor-performance-of-lower-and-upper-extremities-in-community-dwelling-populations
#13
Ning Su, Fei-Fei Zhai, Li-Xin Zhou, Jun Ni, Ming Yao, Ming-Li Li, Zheng-Yu Jin, Gao-Lang Gong, Shu-Yang Zhang, Li-Ying Cui, Feng Tian, Yi-Cheng Zhu
Objective: To investigate the correlation between cerebral small vessel disease (CSVD) burden and motor performance of lower and upper extremities in community-dwelling populations. Methods: We performed a cross-sectional analysis on 770 participants enrolled in the Shunyi study, which is a population-based cohort study. CSVD burden, including white matter hyperintensities (WMH), lacunes, cerebral microbleeds (CMBs), perivascular spaces (PVS), and brain atrophy were measured using 3T magnetic resonance imaging...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29020106/can-tai-chi-training-impact-fractal-stride-time-dynamics-an-index-of-gait-health-in-older-adults-cross-sectional-and-randomized-trial-studies
#14
Brian J Gow, Jeffrey M Hausdorff, Brad Manor, Lewis A Lipsitz, Eric A Macklin, Paolo Bonato, Vera Novak, Chung-Kang Peng, Andrew C Ahn, Peter M Wayne
PURPOSE: To determine if Tai Chi (TC) has an impact on long-range correlations and fractal-like scaling in gait stride time dynamics, previously shown to be associated with aging, neurodegenerative disease, and fall risk. METHODS: Using Detrended Fluctuation Analysis (DFA), this study evaluated the impact of TC mind-body exercise training on stride time dynamics assessed during 10 minute bouts of overground walking. A hybrid study design investigated long-term effects of TC via a cross-sectional comparison of 27 TC experts (24...
2017: PloS One
https://www.readbyqxmd.com/read/29020012/wearable-sensors-objectively-measure-gait-parameters-in-parkinson-s-disease
#15
Johannes C M Schlachetzki, Jens Barth, Franz Marxreiter, Julia Gossler, Zacharias Kohl, Samuel Reinfelder, Heiko Gassner, Kamiar Aminian, Bjoern M Eskofier, Jürgen Winkler, Jochen Klucken
Distinct gait characteristics like short steps and shuffling gait are prototypical signs commonly observed in Parkinson's disease. Routinely assessed by observation through clinicians, gait is rated as part of categorical clinical scores. There is an increasing need to provide quantitative measurements of gait, e.g. to provide detailed information about disease progression. Recently, we developed a wearable sensor-based gait analysis system as diagnostic tool that objectively assesses gait parameter in Parkinson's disease without the need of having a specialized gait laboratory...
2017: PloS One
https://www.readbyqxmd.com/read/29018363/moderate-load-muscular-endurance-strength-training-did-not-improve-peak-power-or-functional-capacity-in-older-men-and-women
#16
Simon Walker, Guy G Haff, Keijo Häkkinen, Robert U Newton
The present study determined the effects of muscular endurance strength training on maximum strength and power, functional capacity, muscle activation and hypertrophy in older men and women. Eighty-one men and women acted as an intervention group while 22 acted as non-training controls (age range 64-75 y). Intervention training included super-sets (i.e., paired exercises, immediately performing the second exercises following completion of the first) with short rest intervals (30-60 s between sets) at an intensity of 50-60% one-repetition maximum (1-RM) for 15-20 repetitions...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29017917/fnirs-response-during-walking-artefact-or-cortical-activity-a-systematic-review
#17
REVIEW
R Vitorio, S Stuart, L Rochester, L Alcock, A Pantall
This systematic review aims to (i) evaluate functional near infrared spectroscopy (fNIRS) walking study design in young adults, older adults and people with Parkinson's disease (PD); (ii) examine signal processing techniques to reduce artefacts and physiological noise in fNIRS data; and (iii) provide evidence-based recommendations for fNIRS walking study design and signal analysis techniques. An electronic search was undertaken. The search request detailed the measurement technique, cohort and walking task...
October 7, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28993048/total-physical-activity-exercise-intensity-and-walking-speed-as-predictors-of-all-cause-and-cause-specific-mortality-over-7%C3%A2-years-in-older-men-the-concord-health-and-aging-in-men-project
#18
Benjumin Hsu, Dafna Merom, Fiona M Blyth, Vasi Naganathan, Vasant Hirani, David G Le Couteur, Markus J Seibel, Louise M Waite, David J Handelsman, Robert G Cumming
OBJECTIVE: The study aimed to examine the contemporaneous temporal association between changes in total physical activity, sports intensity, muscle strengthening exercise, and walking speed as predictors of all-cause, cardiovascular, cancer and other cause-specific mortality in older men. DESIGN, SETTING, PARTICIPANTS, MEASUREMENTS: Community-dwelling men aged 70 years and older from Concord Health and Aging in Men Project were assessed at baseline (2005-2007, n = 1705), 2 years (n = 1367), and 5 years follow-up (n = 958)...
October 6, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28991026/frailty-is-strongly-associated-with-increased-risk-of-recurrent-falls-among-older-hiv-infected-adults
#19
Katherine Tassiopoulos, Mona Abdo, Kunling Wu, Susan L Koletar, Frank J Palella, Robert Kalayjian, Babafemi Taiwo, Kristine M Erlandson
OBJECTIVE: Both frailty and falls occur at earlier-than-expected ages among HIV-infected individuals, but the contribution of frailty-to-fall risk in this population is not well understood. We examined this association among participants enrolled in AIDS Clinical Trials Group (ACTG) A5322. DESIGN: A prospective, multicenter cohort study of HIV-infected men and women aged at least 40 years. METHODS: Frailty assessment included a 4-m walk, grip strength, and self-reported weight loss, exhaustion, and low physical activity...
October 23, 2017: AIDS
https://www.readbyqxmd.com/read/28990874/intensive-gait-treatment-using-a-robot-suit-hybrid-assistive-limb-in-acute-spinal-cord-infarction-report-of-two-cases
#20
Hiroki Watanabe, Aiki Marushima, Hiroaki Kawamoto, Hideki Kadone, Tomoyuki Ueno, Yukiyo Shimizu, Ayumu Endo, Yasushi Hada, Kousaku Saotome, Tetsuya Abe, Masashi Yamazaki, Yoshiyuki Sankai, Eiichi Ishikawa, Akira Matsumura
CONTEXT: Spinal cord infarction (SCI) causes gait disturbance because of paresis, spasticity, and sensory disturbance of the lower limbs. There is no effective medical treatment for SCI, and conventional rehabilitation alone is the main approach to helping individuals work toward independent walking. The aim of this study was to evaluate the effect of gait treatment using the Hybrid Assistive Limb (HAL) on acute SCI. FINDINGS: A 61-year-old female and a 62-year-old male with incomplete paraplegia participated in this study...
October 9, 2017: Journal of Spinal Cord Medicine
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