Article
Neurosciences
Sharon Olsen, Nada Signal, Imran Khan Niazi, Gemma Alder, Usman Rashid, Rasmus Bach Nedergaard, Denise Taylor
Summary: This study investigated the between-session reliability of voluntary activation (VA) and central fatigue in individuals with chronic stroke. The most reliable measure of VA was obtained using the CAR calculation on transformed data, while central fatigue measures demonstrated very poor reliability.
Article
Physiology
Kenzo C. Kishimoto, Martin E. Heroux, Simon C. Gandevia, Jane E. Butler, Joanna Diong
Summary: This study demonstrated that maximal muscle activity can be estimated from muscle activity produced during submaximal voluntary activation. A simple mathematical relationship between voluntary muscle activation and muscle activity across a broad range of values was found, capable of estimating maximal muscle activity.
JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Sport Sciences
Christopher D. Black, Kody R. Haskins, Michael G. Bemben, Rebecca D. Larson
Summary: This study found that carbohydrate mouth rinsing did not have any effect on central or peripheral fatigue after exercise, indicating that it did not attenuate fatigue during strength-based exercise. Despite larger declines in voluntary activation after low-intensity exercise, carbohydrate mouth rinsing had no effects compared to placebo on any measured variable.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2022)
Article
Hospitality, Leisure, Sport & Tourism
Steven A. Garcia, Kazandra M. Rodriguez, Scott R. Brown, Riann M. Palmieri-Smith, Chandramouli Krishnan
Summary: This study found that percent activation derived from the interpolated twitch technique provides more accurate estimates of voluntary activation than CAR derived from burst superimposition and is less affected by pulse train conditions or stimulators in individuals with ACLR.
JOURNAL OF SPORT AND HEALTH SCIENCE
(2022)
Article
Biophysics
Andrei L. Perez Olivera, Matthew C. Solan, Kiros Karamanidis, Katya N. Mileva, Darren C. James
Summary: The study found that voluntary exercises are limited in their ability to fully activate the strongest intrinsic foot muscle, but targeted neuromuscular electrical stimulation may be effective in overcoming this limitation.
JOURNAL OF BIOMECHANICS
(2022)
Article
Neurosciences
Thibault Roumengous, Bhushan Thakkar, Carrie L. L. Peterson
Summary: Spinal cord injuries (SCI) can lead to changes in the nervous system, including cortical changes. The measurement of voluntary cortical/subcortical drive to muscle using transcranial magnetic stimulation (VA(TMS)) is limited by technical challenges. This study investigated the effect of the motor evoked potential (MEP) ratio on VA(TMS) in individuals with tetraplegia and found that MEP ratio did not affect voluntary activation.
FRONTIERS IN HUMAN NEUROSCIENCE
(2022)
Article
Physiology
J. O. Osborne, J. Tallent, O. Girard, P. W. Marshall, D. Kidgell, R. Buhmann
Summary: This Delphi study aimed to gather expert opinions and provide recommendations for best practices when using electrical stimulation during maximal voluntary contractions. The study found that electrical stimulation can validly assess voluntary activation in specific circumstances, such as during maximal contractions, and can be applied to either the muscle or the nerve. The recommendations from experts in this study can guide researchers in making informed decisions when designing studies involving electrical stimulation for the assessment of voluntary activation.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Review
Physiology
Raffy Dotan, Stacey Woods, Paola Contessa
Summary: This review discusses the central fatigue in physical performance, questioning the validity of the currently accepted assessment method and highlighting the need for further research and new directions to confirm and quantify central fatigue.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Physiology
James L. Nuzzo, David S. Kennedy, Harrison T. Finn, Janet L. Taylor
Summary: The contemporary procedure for assessing voluntary activation of the knee extensor muscles with TMS is invalid, but a modified procedure may improve validity in select individuals meeting rigorous eligibility criteria.
JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Sport Sciences
Felipe Alves Ribeiro, Carlos Dellavechia de Carvalho, Julia Causin Andreossi, Douglas Rodrigues Messias Miranda, Marcelo Papoti
Summary: This study aimed to investigate the effects of a 6-week specific preparatory period and a 2-week taper period on neuromuscular fatigue profile in 100-m front crawl swimming performance. The results showed that performance improved after both the specific preparatory and taper periods, but neuromuscular fatigue was primarily developed by peripheral mechanisms and was not affected by the training period.
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
(2023)
Article
Nutrition & Dietetics
Andrew H. Ramsook, Yannick Molgat-Seon, Kyle G. Boyle, Reid A. Mitchell, Joseph H. Puyat, Michael S. Koehle, A. William Sheel, Jordan A. Guenette
Summary: The study demonstrates that assessing diaphragm voluntary activation using CMS is reliable in young healthy adults, providing additional insights into the consequences and mechanisms of diaphragm fatigue.
APPLIED PHYSIOLOGY NUTRITION AND METABOLISM
(2021)
Article
Sport Sciences
Cassio Ruas, Christopher Latella, Janet L. Taylor, G. Gregory Haff, Kazunori Nosaka
Summary: This study aimed to investigate whether the changes in maximal voluntary isometric contraction (MVIC) strength 1 to 3 days after unaccustomed eccentric exercise (ECC) were correlated with changes in central and peripheral neuromuscular parameters immediately post-ECC. The results indicated that the changes in rate of force development (RFD) and motor-evoked potentials (MEP)/maximal M-wave (M-MAX) immediately post-ECC were associated with the magnitude of decrease in MVIC strength at 1 to 3 days post-ECC. However, these markers were not sensitive for the practical detection of muscle damage based on individual data.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Neurosciences
Christina D. Bruce, Justine R. Magnuson, Chris J. McNeil
Summary: This study compared two methods for calculating voluntary activation of the elbow flexors: one based on the size of motor evoked potentials (MEPs) and one based on eliciting the largest superimposed twitch (SIT) at 50% maximal voluntary contraction (MVC) torque. The findings showed that there was no difference in voluntary activation scores between the two methods.
JOURNAL OF NEUROPHYSIOLOGY
(2023)
Article
Rehabilitation
Neal R. Glaviano, Grant E. Norte
Summary: Lesser hip muscle strength is commonly observed in females with patellofemoral pain (PFP), which is associated with poor subjective function and single-leg squat biomechanics. This study found that gluteal activation is related to subjective function, hip strength, and squatting biomechanics in females with PFP.
JOURNAL OF SPORT REHABILITATION
(2022)
Article
Neurosciences
Thibault Roumengous, Carrie L. Peterson
Summary: This study aimed to evaluate the effect of isometric elbow flexion angle on two metrics in individuals with tetraplegia following SCI, and found that the variation in elbow angle did not affect the MEP ratio and VATMS. VATMS may not be a viable approach to assess neuromuscular function in individuals with tetraplegia.
RESTORATIVE NEUROLOGY AND NEUROSCIENCE
(2022)
Review
Sport Sciences
Katsumi Takeno, Neal R. Glaviano, Grant E. Norte, Christopher D. Ingersoll
JOURNAL OF ATHLETIC TRAINING
(2019)
Article
Sport Sciences
Stephan G. Bodkin, Grant E. Norte, Joseph M. Hart
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2019)
Article
Sport Sciences
John McCleve, Luke Donovan, Christopher D. Ingersoll, Charles Armstrong, Neal R. Glaviano
INTERNATIONAL JOURNAL OF ATHLETIC THERAPY & TRAINING
(2019)
Meeting Abstract
Orthopedics
D. A. Sherman, S. A. Scheurer, N. R. Glaviano, C. D. Ingersoll, G. E. Norte
OSTEOARTHRITIS AND CARTILAGE
(2019)
Article
Biophysics
Alexander T. Peebles, Kevin R. Ford, Jeffrey B. Taylor, Joseph M. Hart, Laura P. Sands, Robin M. Queen
JOURNAL OF BIOMECHANICS
(2019)
Article
Biophysics
C. C. Herb, S. Blemker, S. Saliba, J. Hart, J. Hertel
JOURNAL OF BIOMECHANICS
(2020)
Article
Sport Sciences
Geoffrey Christopher Rapp, Christopher D. Ingersoll
JOURNAL OF ATHLETIC TRAINING
(2019)
Article
Neurosciences
Sarah A. Scheurer, David A. Sherman, Neal R. Glaviano, Christopher D. Ingersoll, Grant E. Norte
EXPERIMENTAL BRAIN RESEARCH
(2020)
Article
Rehabilitation
Daniel Gilfeather, Grant Norte, Christopher D. Ingersoll, Neal R. Glaviano
JOURNAL OF SPORT REHABILITATION
(2020)
Article
Sport Sciences
Rachel M. Koldenhoven, Abbis H. Jaffri, Alexandra F. DeJong, Mark Abel, Joseph Hart, Susan Saliba, Jay Hertel
Summary: This study aimed to analyze the effects of 4 weeks of visual gait biofeedback and impairment-based rehabilitation on individuals with chronic ankle instability. The results showed that the group receiving biofeedback had improved gait biomechanics and patient-reported outcomes, recommending the combination of impairment-based rehabilitation with visual biofeedback for individuals with CAI.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2021)
Review
Rehabilitation
Yu Konishi, Ryo Yoshii, Christopher D. Ingersoll
Summary: Quadriceps activation failure, known as arthrogenic muscle inhibition (AMI), is a common issue in various knee joint pathological conditions. It hinders the rehabilitation process and requires a comprehensive understanding of its neurophysiological mechanisms for effective treatment.
JOURNAL OF SPORT REHABILITATION
(2022)
Article
Medicine, General & Internal
Aubrey D. Aguero, J. J. Irrgang, A. J. MacGregor, S. D. Rothenberger, J. M. Hart, J. J. Fraser
Summary: This study aimed to evaluate the impact of sex, rank, branch of service, and military occupation on the risk of ACL injury in the US military. The results showed that although the rate of ACL injury decreased among tactical athletes, it remains much higher than the general US population. Sex, rank, branch of service, and military occupation were identified as risk factors for ACL injury.
BMJ MILITARY HEALTH
(2022)
Article
Sport Sciences
Katsumi Takeno, Christopher D. Ingersoll, Neal R. Glaviano, Sadik Khuder, Grant E. Norte
Summary: This study aimed to compare neuromuscular function in individuals with glenohumeral labrum repair and uninjured controls. The results showed that individuals with labral repair had lower shoulder abduction MVIC torque and higher AMT for the upper trapezius compared to controls. The findings suggest that significant neuromuscular impairments persist beyond 6 months after labral repair, highlighting the importance of addressing these impairments during post-operative rehabilitation.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2022)
Article
Education & Educational Research
Katsumi Takeno, Grant E. Norte, Neal R. Glaviano, Sadik Khuder, Christopher D. Ingersoll
Summary: This study examined the test-retest reliability of corticospinal excitability in the upper extremity musculature and found that active motor threshold was a more consistent measure of reliability, which may be more appropriate in clinical outcomes research.
MEASUREMENT IN PHYSICAL EDUCATION AND EXERCISE SCIENCE
(2023)
Editorial Material
Rehabilitation
J. Ty Hopkins, Christopher D. Ingersoll
JOURNAL OF SPORT REHABILITATION
(2022)