journal
MENU ▼
Read by QxMD icon Read
search

Gait & Posture

journal
https://www.readbyqxmd.com/read/28208109/stability-against-backward-balance-loss-age-related-modifications-following-slip-like-perturbations-of-multiple-amplitudes
#1
Dario Martelli, Federica Aprigliano, Peppino Tropea, Guido Pasquini, Silvestro Micera, Vito Monaco
Falls are one of the most serious problems in the elderly. Although previous studies clearly link the increased risk of falls with ageing, the mechanisms responsible for the modifications of reactive motor behaviours in response to external perturbations are not yet fully understood. This study investigated how the stability against backward balance loss is affected by aging and intensity of perturbations. The Margin of Stability (MoS) was estimated while eight young and eight elderly adults managed three slip-like perturbations of different intensities while walking at the same normalized speed...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28199925/minimum-number-of-days-required-for-a-reliable-estimate-of-daily-step-count-and-energy-expenditure-in-people-with-ms-who-walk-unaided
#2
Michelle Norris, Ross Anderson, Robert W Motl, Sara Hayes, Susan Coote
BACKGROUND AND PURPOSE: The purpose of this study was to examine the minimum number of days needed to reliably estimate daily step count and energy expenditure (EE), in people with multiple sclerosis (MS) who walked unaided. METHODS: Seven days of activity monitor data were collected for 26 participants with MS (age=44.5±11.9years; time since diagnosis=6.5±6.2years; Patient Determined Disease Steps=≤3). Mean daily step count and mean daily EE (kcal) were calculated for all combinations of days (127 combinations), and compared to the respective 7-day mean daily step count or mean daily EE using intra-class correlations (ICC), the Generalizability Theory and Bland-Altman...
February 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28199924/hip-ankle-coordination-during-gait-in-individuals-with-chronic-ankle-instability
#3
Sheng-Che Yen, Kevin K Chui, Marie B Corkery, Elizabeth A Allen, Caitlin M Cloonan
Individuals with chronic ankle instability (CAI) may have sensorimotor impairments that affect control at the hip in addition to the ankle. The purpose of this study was to compare hip-ankle coordination and coordination variability between individuals with CAI and healthy individuals during walking. Ten healthy subjects and 10 subjects with CAI were recruited to walk on a treadmill. Hip-ankle coordination was quantified using vector coding, and coordination variability was quantified using coefficient of correspondence...
February 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28171844/reliability-of-functional-and-predictive-methods-to-estimate-the-hip-joint-centre-in-human-motion-analysis-in-healthy-adults
#4
Hans Kainz, Martin Hajek, Luca Modenese, David J Saxby, David G Lloyd, Christopher P Carty
In human motion analysis predictive or functional methods are used to estimate the location of the hip joint centre (HJC). It has been shown that the Harrington regression equations (HRE) and geometric sphere fit (GSF) method are the most accurate predictive and functional methods, respectively. To date, the comparative reliability of both approaches has not been assessed. The aims of this study were to (1) compare the reliability of the HRE and the GSF methods, (2) analyse the impact of the number of thigh markers used in the GSF method on the reliability, (3) evaluate how alterations to the movements that comprise the functional trials impact HJC estimations using the GSF method, and (4) assess the influence of the initial guess in the GSF method on the HJC estimation...
January 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28167388/unplanned-gait-termination-in-individuals-with-multiple-sclerosis
#5
Kathleen L Roeing, Yaejin Moon, Jacob J Sosnoff
Despite the pervasive nature of gait impairment in multiple sclerosis (MS), there is limited information concerning the control of gait termination in individuals with MS. The purpose of this investigation was to examine unplanned gait termination with and without cognitive distractors in individuals with MS compared to healthy controls. Thirty-one individuals with MS and 14 healthy controls completed a series of unplanned gait termination tasks over a pressure sensitive walkway under distracting and non-distracting conditions...
January 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28189095/effects-of-toe-out-and-toe-in-gait-with-varying-walking-speeds-on-knee-joint-mechanics-and-lower-limb-energetics
#6
Soobia Saad Khan, Saad Jawaid Khan, Juliana Usman
Toe-out/-in gait has been prescribed in reducing knee joint load to medial knee osteoarthritis patients. This study focused on the effects of toe-out/-in at different walking speeds on first peak knee adduction moment (fKAM), second peak KAM (sKAM), knee adduction angular impulse (KAAI), net mechanical work by lower limb as well as joint-level contribution to the total limb work during level walking. Gait analysis of 20 healthy young adults was done walking at pre-defined normal (1.18m/s), slow (0.85m/s) and fast (1...
January 27, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28167387/hip-joint-mechanics-during-walking-in-individuals-with-mild-to-moderate-hip-osteoarthritis
#7
Maria Constantinou, Aderson Loureiro, Christopher Carty, Peter Mills, Rod Barrett
The purpose of this case-control study was to characterise hip joint kinematics and moments during gait in people with mild-to-moderate hip osteoarthritis (OA). Eligible participants were allocated to the hip OA group (n=27) or the age-matched control group (n=26) based on radiographic and symptomatically defined inclusion criteria. Participants walked barefoot along a 10-m walkway at their self-selected gait speed. Trajectories of 43 markers attached to the trunk, pelvis, upper and lower limbs were recorded using a 12-camera motion capture system...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28161687/less-hip-joint-loading-only-during-running-rather-than-walking-in-elderly-compared-to-young-adults
#8
Georgios Giarmatzis, Ilse Jonkers, Remco Baggen, Sabine Verschueren
Walking and running have been found to increase hip bone mass in postmenopausal women. However, the optimal speed to trigger osteogenesis is still under debate because the exact loading during different speeds is poorly characterized. Moreover, age related differences in gait kinematics/kinetics can potentially result in differences in peak hip loading, making extrapolation of results based on young populations to the elderly misleading. Using integrated 3D motion capture and musculoskeletal modeling, peak hip contact forces (HCFs) were calculated during walking and running from 3 to 9km/h in 14 female young (21...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28157577/sensory-reweighting-after-loss-of-auditory-cues-in-healthy-adults
#9
Maxime Maheu, Andréanne Sharp, Simon P Landry, François Champoux
We maintain our balance using information provided by the visual, somatosensory, and vestibular systems on the position of our body in space. Recent evidence has suggested that auditory input also plays a significant role for postural control, yet further investigations are required to better understand the contributions of audition to this process in healthy adults. To date, the process of sensory reweighting when auditory cues are disturbed during postural control has been overlooked. The aim of this study is to determine the impact of hearing protection on sensory reweighting for postural control in healthy adults...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28157576/alterations-in-over-ground-walking-patterns-in-obese-and-overweight-adults
#10
Hao Meng, Daniel P O'Connor, Beom-Chan Lee, Charles S Layne, Stacey L Gorniak
Obesity has been associated with negative effects on postural control, including falls. Previous studies revealed different outcomes regarding the effects of obesity on gait features, and the use of BMI may lead to bias in assessing the true effects of obesity on gait. To better understand the effects of obesity on gait, it is important to examine gait features and associated body composition measures. The purpose of this study was: (1) to assess gait features of normal weight, overweight and obese adults, and (2) to assess the relationship between body composition measures and gait features...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28157575/observing-prioritization-effects-on-cognition-and-gait-the-effect-of-increased-cognitive-load-on-cognitively-healthy-older-adults-dual-task-performance
#11
Linda M Maclean, Laura J E Brown, H Khadra, Arlene J Astell
Previous studies exploring the effects of attention-prioritization on cognitively healthy older adults' gait and cognitive dual task (DT) performance have shown DT cost in gait outcomes but inconsistent effects on cognitive performance, which may reflect task difficulty (the cognitive load). This study aimed to identify whether changing the cognitive load during a walking and counting DT improved the challenge/sensitivity of the cognitive task to observe prioritization effects on concurrent gait and cognitive performance outcomes...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28157572/effects-of-singular-and-dual-task-constraints-on-motor-skill-variability-in-childhood
#12
Simone V Gill, Zoe Yang, Ya-Ching Hung
We examined the effects of singular versus dual task constraints involving upper and lower extremities in typically developing children in young (4-6 years old), middle (7-9 years old), and old (10-13 years old) age groups. The purposes of this study were: 1) to investigate the effects of singular upper and lower extremity and dual upper and lower extremity conditions on motor variability and 2) to examine if variability in children's motor actions would differ according to age (i.e., young, middle, or old)...
January 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28171843/gait-kinetics-of-total-hip-replacement-patients-a-large-scale-long-term-follow-up-study
#13
Damien Bennett, Paul Ryan, Seamus O'Brien, David E Beverland
BACKGROUND: It is not known if lower limb gait kinetics of total hip replacement (THR) patients reach normal levels at long term follow-up post-operatively. METHODS: Three-dimensional gait analysis was performed on 134 THR patients with identical implants 10-years post-operatively. Lower limb moments and powers were compared between different age strata (54-64 years, 65-69 years, 70-74 years, 75-79 years and over 80 years) and a normal elderly control group. RESULTS: Hip extensor moment and hip power generation were significantly reduced in all age groups compared to normal...
January 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28129590/functional-implications-of-muscle-co-contraction-during-gait-in-advanced-age
#14
Justine Lo, On-Yee Lo, Erin A Olson, Daniel Habtemariam, Ikechukwu Iloputaife, Margaret M Gagnon, Brad Manor, Lewis A Lipsitz
Older adults often exhibit high levels of lower extremity muscle co-contraction, which may be the cause or effect of age-related impairments in gait and associated falls. Normal gait requires intact executive function and thus can be slowed by challenging executive resources available to the neuromuscular system through the performance of a dual task. We therefore investigated associations between lower limb co-contraction and gait characteristics under normal and dual task conditions in healthy older adults (85...
January 20, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28126694/relationships-among-spinal-mobility-and-sagittal-alignment-of-spine-and-lower-extremity-to-quality-of-life-and-risk-of-falls
#15
Yoshinori Ishikawa, Naohisa Miyakoshi, Michio Hongo, Yuji Kasukawa, Daisuke Kudo, Yoichi Shimada
Spinal deformities can affect quality of life (QOL) and risk of falling, but no studies have explored the relationships of spinal mobility and sagittal alignment of spine and the lower extremities simultaneously. Purpose of this study is to clarify the relationship of those postural parameters to QOL and risk of falling. The study evaluated 110 subjects (41 men, 69 women; mean age, 73 years). Upright and flexion and extension angles for thoracic kyphosis, lumbar lordosis, and spinal inclination were evaluated with SpinalMouse(®)...
January 20, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28126693/differences-in-knee-adduction-moment-between-healthy-subjects-and-patients-with-osteoarthritis-depend-on-the-knee-axis-definition
#16
S Meireles, F De Groote, S Van Rossom, S Verschueren, I Jonkers
OBJECTIVE: This study, firstly, investigates the effect of using an anatomical versus a functional axis of rotation (FAR) on knee adduction moment (KAM) in healthy subjects and patients with knee osteoarthritis (KOA). Secondly, this study reports KAM for models with FAR calculated using weight-bearing and non-weight-bearing motion. DESIGN: Three musculoskeletal models were created using OpenSim with different knee axis of rotation (AR): transepicondylar axis (TEA); FAR calculated based on SARA algorithm using a weight-bearing motion (wFAR) and a non-weight-bearing motion (nwFAR)...
January 19, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28119230/change-in-the-natural-head-neck-orientation-momentarily-altered-sensorimotor-control-during-sensory-transition
#17
Isabelle Xu, Simon Laurendeau, Normand Teasdale, Martin Simoneau
Achilles tendon vibration generates proprioceptive information that is incongruent with the actual body position; it alters the perception of body orientation leading to a vibration-induced postural response. When a person is standing freely, vibration of the Achilles tendon shifts the internal representation of the verticality backward thus the vibration-induced postural response realigned the whole body orientation with the shifted subjective vertical. Because utricular otoliths information participates in the creation of the internal representation of the verticality, changing the natural orientation of the head-neck system during Achilles tendon vibration could alter the internal representation of the earth vertical to a greater extent...
January 17, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28157573/foot-segmental-mobility-during-subphases-of-running-comparative-study-between-two-striking-patterns
#18
Helen Peters, Kevin Deschamps, Giovanni Arnoldo Matricali, Filip Staes
OBJECTIVES: The literature lacks comparative data regarding foot segmental mobility in rearfoot (RFS) and midfoot striking (MFS) patterns. The aim of the study is to quantify the foot segmental mobility during distinct subphases of stance in presence of both striking patterns. METHODS: Twelve participants were instructed to run barefoot at a constant speed of 3.3m/s on a 10-m walkway, while adopting a RFS and a MFS pattern. Multi-segment foot mobility during the impact phase, the absorption phase and the generation phase was subsequently calculated and compared between both conditions...
January 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28119232/effect-of-total-knee-replacement-surgery-and-postoperative-12-month-home-exercise-program-on-gait-parameters
#19
Heikkilä Anneli, Sevander-Kreus Nina, Häkkinen Arja, Vuorenmaa Mirja, Salo Petri, Pamilo Konsta, Ylinen Jari
OBJECTIVE: To evaluate the effects of surgery and a postoperative progressive home exercise program on gait parameters among individuals operated with total knee arthroplasty. DESIGN: Single blinded randomized controlled trial. SUBJECTS: 108 patients (84 females, 24 males, mean age 69 years). INTERVENTIONS: Patients were equally randomized into an exercise group (EG) and control group (CG). The 12-months progressive home exercise program starting two months postoperatively was compared to usual care...
January 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28119231/reliability-and-comparison-of-trunk-and-pelvis-angles-arm-distance-and-center-of-pressure-in-the-seated-functional-reach-test-with-and-without-foot-support-in-children
#20
Sandra Radtka, Jacqueline Zayac, Krystyna Goldberg, Michael Long, Rustem Ixanov
This study determined test-retest reliability of trunk and pelvis joint angles, arm distance and center of pressure (COP) excursion for the seated functional reach test (FRT) and compared these variables during the seated FRT with and without foot support. Fifteen typically developing children (age 9.3±4.1years) participated. Trunk and pelvis joint angles, arm distance, and COP excursion were collected on two days using three-dimensional motion analysis and a force plate while subjects reached maximally with and without foot support in the anterior, anterior/lateral, lateral, posterior/lateral directions...
January 16, 2017: Gait & Posture
journal
journal
20341
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"