Skeletal muscle performance and ageing

M Tieland, I Trouwborst, BC Clark - Journal of cachexia …, 2018 - Wiley Online Library
The world population is ageing rapidly. As society ages, the incidence of physical limitations
is dramatically increasing, which reduces the quality of life and increases healthcare …

Decomposition of surface EMG signals from cyclic dynamic contractions

CJ De Luca, SS Chang, SH Roy… - Journal of …, 2015 - journals.physiology.org
Over the past 3 decades, various algorithms used to decompose the electromyographic
(EMG) signal into its constituent motor unit action potentials (MUAPs) have been reported …

Motor unit pool organization examined via spike-triggered averaging of the surface electromyogram

X Hu, WZ Rymer, NL Suresh - Journal of neurophysiology, 2013 - journals.physiology.org
Voluntary muscle force control is accomplished both by recruitment of motor units (MUs) and
by firing rate modulation of active MUs. Typically, MU recruitment and firing rate organization …

Neural drive and motor unit characteristics after anterior cruciate ligament reconstruction: implications for quadriceps weakness

DA Sherman, J Rush, MS Stock, CD Ingersoll… - PeerJ, 2023 - peerj.com
Purpose The purpose of this investigation was to compare the quality of neural drive and
recruited quadriceps motor units'(MU) action potential amplitude (MUAP AMP) and …

Understanding the consequences of repetitive subconcussive head impacts in sport: brain changes and dampened motor control are seen after boxing practice

TG Di Virgilio, M Ietswaart, L Wilson… - Frontiers in human …, 2019 - frontiersin.org
Objectives The potential effects of exposure to repetitive subconcussive head impacts
through routine participation in sport are not understood. To investigate the effects of …

Eight weeks of resistance training increases strength, muscle cross-sectional area and motor unit size, but does not alter firing rates in the vastus lateralis

AJ Sterczala, JD Miller, HL Dimmick, ME Wray… - European journal of …, 2020 - Springer
Purpose Previous investigations analyzing resistance training's influence on motor unit (MU)
firing rates have yielded mixed results. These mixed results may be clarified by concurrently …

Independent component analysis based algorithms for high-density electromyogram decomposition: Systematic evaluation through simulation

C Dai, X Hu - Computers in biology and medicine, 2019 - Elsevier
Motor unit activities provide important theoretical and clinical insights regarding different
aspects of neuromuscular control. Based on high-density electromyogram (HD EMG) …

Extracting and classifying spatial muscle activation patterns in forearm flexor muscles using high-density electromyogram recordings

C Dai, X Hu - International journal of neural systems, 2019 - World Scientific
The human hand is capable of producing versatile yet precise movements largely owing to
the complex neuromuscular systems that control our finger movement. This study seeks to …

Changes in motor unit behavior following isometric fatigue of the first dorsal interosseous muscle

L McManus, X Hu, WZ Rymer… - Journal of …, 2015 - journals.physiology.org
The neuromuscular strategies employed to compensate for fatigue-induced muscle force
deficits are not clearly understood. This study utilizes surface electromyography (sEMG) …

Muscle fatigue increases beta-band coherence between the firing times of simultaneously active motor units in the first dorsal interosseous muscle

L McManus, X Hu, WZ Rymer… - Journal of …, 2016 - journals.physiology.org
Synchronization between the firing times of simultaneously active motor units (MUs) is
generally assumed to increase during fatiguing contractions. To date, however, estimates of …