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Mahmood I, Raza A, Maqbool HF, Dehghani-Sanij AA. Evaluation of an ankle–foot orthosis effect on gait transitional stability during ramp ascent/descent. Med Biol Eng Comput 2022; 60:2119-2132. [DOI: 10.1007/s11517-022-02587-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 05/04/2022] [Indexed: 10/18/2022]
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Mirkiani S, Roszko DA, O'Sullivan C, Faridi P, Hu DS, Fang D, Everaert DG, Toossi A, Konrad PE, Robinson K, Mushahwar VK. Overground gait kinematics and muscle activation patterns in the Yucatan mini pig. J Neural Eng 2022; 19. [PMID: 35172283 DOI: 10.1088/1741-2552/ac55ac] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 02/16/2022] [Indexed: 11/12/2022]
Abstract
Objective The objectives of this study were to assess gait biomechanics and the effect of overground walking speed on gait parameters, kinematics, and electromyographic (EMG) activity in the hindlimb muscles of Yucatan Minipigs (YMPs). Approach Nine neurologically-intact, adult YMPs were trained to walk overground in a straight line. Whole-body kinematics and EMG activity of hindlimb muscles were recorded and analyzed at 6 different speed ranges (0.4-0.59, 0.6-0.79, 0.8-0.99, 1.0-1.19, 1.2-1.39, and 1.4-1.6 m/s). A MATLAB program was developed to detect strides and gait events automatically from motion-captured data. The kinematics and EMG activity were analyzed for each stride based on the detected events. Main results Significant decreases in stride duration, stance and swing times and an increase in stride length were observed with increasing speed. A transition in gait pattern occurred at the 1.0m/s walking speed. Significant increases in the range of motion of the knee and ankle joints were observed at higher speeds. Also, the points of minimum and maximum joint angles occurred earlier in the gait cycle as the walking speed increased. The onset of EMG activity in the biceps femoris muscle occurred significantly earlier in the gait cycle with increasing speed. Significance YMPs are becoming frequently used as large animal models for preclinical testing and translation of novel interventions to humans. A comprehensive characterization of overground walking in neurologically-intact YMPs is provided in this study. These normative measures set the basis against which the effects of future interventions on locomotor capacity in YMPs can be compared.
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Affiliation(s)
- Soroush Mirkiani
- Neuroscience & Mental Health Institute and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, University of Alberta, Edmonton, Alberta, T6G 2R3, CANADA
| | - David A Roszko
- Neuroscience & Mental Health Institute and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Carly O'Sullivan
- Neuroscience & Mental Health Institute and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz, Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Pouria Faridi
- Neuroscience & Mental Health Institute and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - David S Hu
- Department of Medicine and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Daniel Fang
- Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Dirk G Everaert
- Department of Medicine and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Amirali Toossi
- Neuroscience & Mental Health Institute and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, Edmonton, Alberta, T6G 2R3, CANADA
| | - Peter E Konrad
- Department of Neurosurgery, West Virginia University, PO Box 9183, Morgantown, West Virginia, 26506, UNITED STATES
| | - Kevin Robinson
- School of Physical Therapy, Belmont University, 341 McWhorter Hall, Nashville, Tennessee, 37212, UNITED STATES
| | - Vivian K Mushahwar
- Department of Medicine and Sensory Motor Adaptive Rehabilitation Technology (SMART) Network, University of Alberta, 5005 Katz Building, University of Alberta, Edmonton, Alberta, T6G 2R3, CANADA
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Postural Evaluation in Sports and Sedentary Subjects by Rasterstereographic Back Shape Analysis. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10248838] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Posture is defined as the position of the body in space, the aim of which is to maintain balance, both in static and dynamic conditions. Our purpose was to study various postural variables involved in postural adaptations of athletes practicing symmetric and asymmetric sports at professional level. Methods: Patients include sedentary subjects, competitive athletes practicing symmetrical and asymmetrical sports. Postural evaluation of the three different groups was performed using the rasterstereographic-system Formetric-4D. Results: 157 subjects were recruited. From the comparison between subjects playing symmetrical and asymmetrical sports, arises a statistically significant difference on cervical (p = 0.041) and lumbar (p = 0.047) flèche of Stagnara, with higher values for symmetrical athletes’ group. Hemipelvis torsion (p = 0.031) and lumbar flèche (p ≤ 0.001) of Stagnara are higher in symmetrical athletes’ group (sedentary). Hemipelvis torsion, cervical and lumbar flèche resulted to be higher among athletes (sedentary) (p = 0.016, p = 0.003, p = 0.027). Conclusions: In addition to the competitive sports’ medical examination, a screening with rasterstereographic-system Formetric-4D is suggested to all sedentary subjects, without serious skeletal pathologies which want to start athletic activity. Rasterstereographic-system Formetric-4D is also suggested to all athletes practicing sports, with the aim to identify eventual unknown postures, consequent to reiterated repetition of specific movements.
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Lee SH, Lee HJ, Shim Y, Chang WH, Choi BO, Ryu GH, Kim YH. Wearable hip-assist robot modulates cortical activation during gait in stroke patients: a functional near-infrared spectroscopy study. J Neuroeng Rehabil 2020; 17:145. [PMID: 33121535 PMCID: PMC7596937 DOI: 10.1186/s12984-020-00777-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 10/21/2020] [Indexed: 12/21/2022] Open
Abstract
Background Gait dysfunction is common in post-stroke patients as a result of impairment in cerebral gait mechanism. Powered robotic exoskeletons are promising tools to maximize neural recovery by delivering repetitive walking practice. Objectives The purpose of this study was to investigate the modulating effect of the Gait Enhancing and Motivating System-Hip (GEMS-H) on cortical activation during gait in patients with chronic stroke. Methods. Twenty chronic stroke patients performed treadmill walking at a self-selected speed either with assistance of GEMS-H (GEMS-H) or without assistance of GEMS-H (NoGEMS-H). Changes in oxygenated hemoglobin (oxyHb) concentration in the bilateral primary sensorimotor cortex (SMC), premotor cortices (PMC), supplemental motor areas (SMA), and prefrontal cortices (PFC) were recorded using functional near infrared spectroscopy. Results Walking with the GEMS-H promoted symmetrical SMC activation, with more activation in the affected hemisphere than in NoGEMS-H conditions. GEMS-H also decreased oxyHb concentration in the late phase over the ipsilesional SMC and bilateral SMA (P < 0.05). Conclusions The results of the present study reveal that the GEMS-H promoted more SMC activation and a balanced activation pattern that helped to restore gait function. Less activation in the late phase over SMC and SMA during gait with GEMS-H indicates that GEMS-H reduces the cortical participation of stroke gait by producing rhythmic hip flexion and extension movement and allows a more coordinate and efficient gait patterns. Trial registration NCT03048968. Registered 06 Feb 2017
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Affiliation(s)
- Su-Hyun Lee
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 115, Gangnam-gu, Seoul, 06355, Republic of Korea
| | - Hwang-Jae Lee
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 115, Gangnam-gu, Seoul, 06355, Republic of Korea.,Department of Health Sciences and Technology, Department of Medical Device Management and Research, Department of Digital Health, SAIHST, Sungkyunkwan University, Irwon-ro 81, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Youngbo Shim
- Samsung Research, Samsung Electronics, 56, Seongchon-gil, Seocho-gu, Seoul, 06756, Republic of Korea
| | - Won Hyuk Chang
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 115, Gangnam-gu, Seoul, 06355, Republic of Korea
| | - Byung-Ok Choi
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 81, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Gyu-Ha Ryu
- Department of Medical Device Management and Research, SAIHST, Sungkyunkwan University School of Medicine, Irwon-ro 81, Gangnam-gu, Seoul, 06351, Republic of Korea.,The Office of R&D Strategy & Planning, Samsung Medical Center, Irwon-ro 81, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Yun-Hee Kim
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 115, Gangnam-gu, Seoul, 06355, Republic of Korea. .,Department of Health Sciences and Technology, Department of Medical Device Management and Research, Department of Digital Health, SAIHST, Sungkyunkwan University, Irwon-ro 81, Gangnam-gu, Seoul, 06351, Republic of Korea.
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Iosa M, Morone G, Fusco A, Marchetti F, Caltagirone C, Paolucci S, Peppe A. Loss of fractal gait harmony in Parkinson's Disease. Clin Neurophysiol 2015; 127:1540-1546. [PMID: 26679417 DOI: 10.1016/j.clinph.2015.11.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/21/2015] [Accepted: 11/21/2015] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Recently, an intrinsic fractal harmonic structure was found underlying the rhythm of physiological walking, but it has not yet been investigated in subjects with a neurological disease. The aim of this study was to determine if and how this harmonic structure is altered in patients with Parkinson's Disease. METHODS Gait analysis of 70 patients with Parkinson's Disease in pharmacological phase on was performed, the findings of which we compared with reference data of age-matched healthy subjects. Fifteen patients were retested after a washout period of 12 h. RESULTS Alterations in all spatio-temporal gait parameters and gait indices with regard to symmetry, coordination, and harmony were noted, but after correction for multicollinearity bias, only the latter correlated significantly with Unified Parkinson's Disease Rating Scale motor score (p=0.001). The fractal gait structure underwent even more extensive alterations in pharmacological off phase (p<0.05). CONCLUSIONS The intrinsic gait harmony was altered in patients with Parkinson's Disease and significantly correlated to motor severity. It could be partially recovered by assumption of L-dopa. SIGNIFICANCE Loss of harmony is a quantitatively assessable gait benchmark in Parkinson's Disease. It seems to be dependent on dopaminergic but also on non-dopaminergic networks.
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Affiliation(s)
- Marco Iosa
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy.
| | - Giovanni Morone
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy
| | - Augusto Fusco
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy
| | - Fabio Marchetti
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy
| | - Carlo Caltagirone
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy; Tor Vergata University of Rome, via Montpellier 1, 00133 Rome, Italy
| | - Stefano Paolucci
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy
| | - Antonella Peppe
- Santa Lucia Foundation, I.R.C.C.S., via Ardeatina 306, 00179 Rome, Italy
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