Impaired performance of rapid grip in people with Parkinson's disease and motor segmentation
Hum Mov Sci. 2024 Mar 19;95:103201. doi: 10.1016/j.humov.2024.103201. Online ahead of print.ABSTRACTBradykinesia, or slow movement, is a defining symptom of Parkinson's disease (PD), but the underlying neuromechanical deficits that lead to this slowness remain unclear. People with PD often have impaired rates of motor output accompanied by disruptions in neuromuscular excitation, causing abnormal, segmented, force-time curves. Previous investigations using single-joint models indicate that agonist electromyogram (EMG) silent periods cause motor segmentation. It is unknown whether motor segmentation is evident in more anato...
Source: Human Movement Science - March 20, 2024 Category: Neurology Authors: Rebecca J Daniels David Grenet Christopher A Knight Source Type: research
An analysis of the effect of motor experience on muscle synergy in the badminton jump smash
Hum Mov Sci. 2024 Mar 19;95:103209. doi: 10.1016/j.humov.2024.103209. Online ahead of print.ABSTRACTThe jump smash is badminton's most aggressive technical manoeuvre, which is often the key to winning a match. This paper aims to explore the neuromuscular control strategies of advanced and beginner players when jumping smash in different ways. Collecting sEMG and kinematic data from 18 subjects with different motor experiences when jumping smash. Nonnegative Matrix Factorization and K-Means clustering were used to extract muscle synergies and exclude irrelevant combined synergies. Uncontrolled manifold analysis was then use...
Source: Human Movement Science - March 20, 2024 Category: Neurology Authors: Zhengye Pan Lushuai Liu Xingman Li Yunchao Ma Source Type: research
Impaired performance of rapid grip in people with Parkinson's disease and motor segmentation
Hum Mov Sci. 2024 Mar 19;95:103201. doi: 10.1016/j.humov.2024.103201. Online ahead of print.ABSTRACTBradykinesia, or slow movement, is a defining symptom of Parkinson's disease (PD), but the underlying neuromechanical deficits that lead to this slowness remain unclear. People with PD often have impaired rates of motor output accompanied by disruptions in neuromuscular excitation, causing abnormal, segmented, force-time curves. Previous investigations using single-joint models indicate that agonist electromyogram (EMG) silent periods cause motor segmentation. It is unknown whether motor segmentation is evident in more anato...
Source: Human Movement Science - March 20, 2024 Category: Neurology Authors: Rebecca J Daniels David Grenet Christopher A Knight Source Type: research
An analysis of the effect of motor experience on muscle synergy in the badminton jump smash
Hum Mov Sci. 2024 Mar 19;95:103209. doi: 10.1016/j.humov.2024.103209. Online ahead of print.ABSTRACTThe jump smash is badminton's most aggressive technical manoeuvre, which is often the key to winning a match. This paper aims to explore the neuromuscular control strategies of advanced and beginner players when jumping smash in different ways. Collecting sEMG and kinematic data from 18 subjects with different motor experiences when jumping smash. Nonnegative Matrix Factorization and K-Means clustering were used to extract muscle synergies and exclude irrelevant combined synergies. Uncontrolled manifold analysis was then use...
Source: Human Movement Science - March 20, 2024 Category: Neurology Authors: Zhengye Pan Lushuai Liu Xingman Li Yunchao Ma Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
Mechanical environment influences muscle activity during infant rolling
Hum Mov Sci. 2024 Mar 13;95:103208. doi: 10.1016/j.humov.2024.103208. Online ahead of print.ABSTRACTAn infant's musculoskeletal and motor development is largely affected by their environment. Understanding how different mechanical environments affect an infant's movements and muscle use is necessary to inform the juvenile products industry and reduce incidents involving inclined nursery products each year. The purpose of this study was to determine how the coordinated movements and corresponding muscle activation patterns are affected by different mechanical environments, specifically the back incline angle. Thirty-eight h...
Source: Human Movement Science - March 14, 2024 Category: Neurology Authors: Danielle N Siegel Safeer F Siddicky Wyatt D Davis Erin M Mannen Source Type: research
How do features of dynamic postural stability change with age during quiet standing, gait, and obstacle crossing?
This study investigated age-related changes in dynamic postural stability during quiet standing, gait, and obstacle crossing. Participants aged 20-30 (n = 20), 60-69 (n = 18), 70-79 (n = 15), and 80+ (n = 7; not analyzed statistically) years old performed these tasks while whole-body motion was tracked using motion capture. MOS in each direction was estimated throughout each trial, and integrals, transient ranges, and trial minima were extracted (as applicable). MOS time series were also ensemble averaged across age groups. No age-related differences were identified for quiet standing or gait. However, obstacle crossing me...
Source: Human Movement Science - March 10, 2024 Category: Neurology Authors: Grace O'Neill Michelle Campbell Taylor Matson Alison Schinkel-Ivy Source Type: research
Utilising dynamic motor control index to identify age-related differences in neuromuscular control
CONCLUSION: The use of VAF based metrics and specifically DMCI, rather than number of MS, in combination with stepping forward exercise can provide a low-cost and easy to implement approach for assessing neuromuscular control in clinical settings.PMID:38461747 | DOI:10.1016/j.humov.2024.103200 (Source: Human Movement Science)
Source: Human Movement Science - March 10, 2024 Category: Neurology Authors: Laura Burke Liudmila Khokhlova Brendan O'Flynn Salvatore Tedesco Source Type: research
How do features of dynamic postural stability change with age during quiet standing, gait, and obstacle crossing?
This study investigated age-related changes in dynamic postural stability during quiet standing, gait, and obstacle crossing. Participants aged 20-30 (n = 20), 60-69 (n = 18), 70-79 (n = 15), and 80+ (n = 7; not analyzed statistically) years old performed these tasks while whole-body motion was tracked using motion capture. MOS in each direction was estimated throughout each trial, and integrals, transient ranges, and trial minima were extracted (as applicable). MOS time series were also ensemble averaged across age groups. No age-related differences were identified for quiet standing or gait. However, obstacle crossing me...
Source: Human Movement Science - March 10, 2024 Category: Neurology Authors: Grace O'Neill Michelle Campbell Taylor Matson Alison Schinkel-Ivy Source Type: research
Utilising dynamic motor control index to identify age-related differences in neuromuscular control
CONCLUSION: The use of VAF based metrics and specifically DMCI, rather than number of MS, in combination with stepping forward exercise can provide a low-cost and easy to implement approach for assessing neuromuscular control in clinical settings.PMID:38461747 | DOI:10.1016/j.humov.2024.103200 (Source: Human Movement Science)
Source: Human Movement Science - March 10, 2024 Category: Neurology Authors: Laura Burke Liudmila Khokhlova Brendan O'Flynn Salvatore Tedesco Source Type: research
How do features of dynamic postural stability change with age during quiet standing, gait, and obstacle crossing?
This study investigated age-related changes in dynamic postural stability during quiet standing, gait, and obstacle crossing. Participants aged 20-30 (n = 20), 60-69 (n = 18), 70-79 (n = 15), and 80+ (n = 7; not analyzed statistically) years old performed these tasks while whole-body motion was tracked using motion capture. MOS in each direction was estimated throughout each trial, and integrals, transient ranges, and trial minima were extracted (as applicable). MOS time series were also ensemble averaged across age groups. No age-related differences were identified for quiet standing or gait. However, obstacle crossing me...
Source: Human Movement Science - March 10, 2024 Category: Neurology Authors: Grace O'Neill Michelle Campbell Taylor Matson Alison Schinkel-Ivy Source Type: research
