Article
Orthopedics
Erich Petushek, Agnethe Nilstad, Roald Bahr, Tron Krosshaug
Summary: The study found that visually assessing performances of the single-leg squat and vertical drop jump were not accurate predictors of future noncontact ACL injuries.
JOURNAL OF ORTHOPAEDIC & SPORTS PHYSICAL THERAPY
(2021)
Article
Multidisciplinary Sciences
Korbinian Sebastian Hermann Ksoll, Matthias Cotic, Kathrin Schmalzl, Knut Beitzel, Andrea Achtnich, Andreas Imhoff, Ansgar Schwirtz, Florian Kreuzpointner, Wolfgang Seiberl
Summary: This study investigated the inter-limb symmetry and movement coordination of single-leg squat (SLS) using the modified vector coding technique. The results showed no significant differences between both legs and revealed inter-limb symmetry in movement coordination. Furthermore, different coordination patterns were observed in downward movement, change of direction, and upward movement.
Article
Orthopedics
Katherine M. Everhart, Kenzie B. Friesen, Nicole M. Bordelon, Anthony W. Fava, Hillary A. Plummer, David M. Shannon, Gretchen D. Oliver
Summary: This study compared the kinematics of single-leg squat (SLS) performance in collegiate softball pitchers with and without upper extremity pain. The results showed no significant difference in SLS mechanics between the two groups, but the drive-leg mechanics were more stable than the stride-leg mechanics.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2023)
Article
Multidisciplinary Sciences
Paloma Guillen-Rogel, Cristina San Emeterio, Pedro J. Marin
Summary: The purpose of this study was to evaluate the reliability of a clinical observation method to assess and determine the relationship between navicular drop (ND) and ankle control in the single leg squat (SLSankle). The study found that the SLSankle score provided a reliable and valid alternative for quantifying foot mobility in comparison to the ND test.
Article
Neurosciences
Guilherme Vinicius da Costa, Marcelo Peduzzi de Castro, Cristiano Gomes Sanchotene, Daniel Cury Ribeiro, Heiliane de Brito Fontana, Caroline Ruschel
Summary: The study found that greater passive ankle dorsiflexion range is associated with smaller thigh internal rotation, while greater dynamic ankle dorsiflexion range is associated with smaller trunk flexion and pelvis anteversion. There was no association found between passive ankle dorsiflexion range and dynamic ankle dorsiflexion range.
Article
Rheumatology
Gregor Kuntze, Alberto Nettel-Aguirre, Julia Brooks, Shane Esau, Colleen Nesbitt, Dianne Mosher, Marinka Twilt, Susanne Benseler, Janet L. Ronsky, Carolyn A. Emery
Summary: This study examined the biomechanics of single leg squat (SLS) in youth with juvenile idiopathic arthritis (JIA) and their healthy peers. The results showed that JIA patients performed the SLS with more internally rotated hip, while female participants displayed better hip flexion/extension range of motion. Additionally, associations were found between body mass index, knee flexion angle, and hip range of motion during the SLS task.
ARTHRITIS CARE & RESEARCH
(2021)
Article
Orthopedics
Leo-Pohl Bardot, Gregoire Micicoi, Henri Favreau, Petr Zeman, Raghbir Khakha, Matthieu Ehlinger, Matthieu Ollivier
Summary: Preoperatively planned correction for tibial osteotomy surgery is based on weightbearing long-leg X-rays, but the alignment of the lower limb changes significantly in different weightbearing conditions. Varus malalignment increases with weight-bearing loading from double-leg to single-leg stances, suggesting the importance of considering patient-specific changes in joint line convergence when planning the surgery.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Orthopedics
Ana Luiza Costa e Silva Cabral, Jessica Garcia Jorge, Valdeci Carlos Dionisio
Summary: During single-leg squat, individuals with knee osteoarthritis show increased EMG activity of certain muscles, but this pattern may be influenced by fear of movement leading to reduced knee angular displacement.
Article
Orthopedics
Kenzie B. Friesen, Regan E. Shaw, David M. Shannon, Jeffrey R. Dugas, James R. Andrews, Gretchen D. Oliver
Summary: This study examined the relationship between trunk compensatory kinematics during the single-leg squat and kinematics at foot contact during the windmill pitch. The results showed that additional trunk rotation and trunk flexion during the single-leg squat were associated with increased knee valgus and trunk flexion at foot contact of the pitch, indicating poor lumbopelvic-hip complex stability during the softball pitch and potential for injury risk.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Medicine, General & Internal
Hyun-Doo Moon, Han-Gyeol Choi, Kyong-Joon Lee, Dong-Jun Choi, Hyun-Jin Yoo, Yong-Seuk Lee
Summary: A deep learning model was developed to predict the weight bearing line (WBL) ratio using knee standing AP alone, achieving comparable accuracy to primary physicians in assessing lower limb alignment. This model could serve as the basis for developing an automated lower limb alignment assessment tool for use in primary clinics.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Biophysics
Lucas D. Haberkamp, Micah C. Garcia, David M. Bazett-Jones
Summary: This study investigated the validity of 2D pose estimation models for evaluating kinematics in adolescent athletes. The results showed significant differences between 2D pose estimation and 3D motion analysis in sagittal and frontal plane angles during single-leg squats, but moderate to strong correlations were observed between the two techniques in most cases.
JOURNAL OF BIOMECHANICS
(2022)
Article
Biotechnology & Applied Microbiology
Rachid Ramadan, Fabian Meischein, Hendrik Reimann
Summary: In this study, a neuromechanical model is proposed that combines movement goals and motor plans to allow for flexible adjustment of walking parameters. The model can walk with a wide range of gait patterns by choosing a small number of high-level control parameters, while keeping the parameters governing the low-level reflex loops fixed. The model is able to generalize learned behavior to gait patterns it had not encountered before, and can transition between different gaits without loss of balance by switching to a new set of control parameters in real time.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Rehabilitation
John Nyland, Ryan Krupp, Justin Givens, David Caborn
Summary: The experimental group showed greater knee flexion, higher dynamic LE stiffness, and increased hip muscle EMG amplitude. These findings suggest improved neuromuscular control in the lower extremities in the experimental group.
PHYSIOTHERAPY THEORY AND PRACTICE
(2022)
Article
Environmental Sciences
Paloma Guillen-Rogel, David Barbado, Cristina Franco-Escudero, Cristina San Emeterio, Pedro J. Marin
Summary: This study investigated the relationship between core stability deficits and dynamic knee valgus during single-leg squats, finding that deficits in core stability may influence neuromuscular control. The results also showed a significant correlation between core stability test and dynamic knee valgus, indicating a potential link between core stability and knee injuries.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Orthopedics
Stefano Di Paolo, Piero Agostinone, Alberto Grassi, Gian Andrea Lucidi, Erika Pinelli, Marco Bontempi, Gregorio Marchiori, Laura Bragonzoni, Stefano Zaffagnini
Summary: No significant kinematic differences were found between anatomic single-bundle (SB) and single-bundle plus lateral plasty (SBLP) ACL reconstruction during the execution of a single-leg squat. Regardless of the surgical technique, ACL reconstruction failed to restore knee biomechanics.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Rehabilitation
Shauna Dudley-Javoroski, Jinhyun Lee, Richard K. Shields
Summary: This study aims to investigate the correlations between aging, cognitive impairment, and quality of life (QOL) in individuals with and without spinal cord injury (SCI). The results showed that individuals with SCI had lower global QOL, particularly in domains related to physical function and symptoms, but higher QOL in positive affect/well-being and resilience. There were no significant differences in cognitive function between SCI and non-SCI individuals, but strong correlations between age and cognition were absent in SCI. Significant correlations between cognition and QOL were prevalent for non-SCI individuals but not for those with SCI.
PHYSIOTHERAPY THEORY AND PRACTICE
(2022)
Article
Critical Care Medicine
Leslie R. Morse, Edelle C. Field-Fote, Jose Contreras-Vidal, Linda J. Noble-Haeusslein, Matthew Rodreick, Richard K. Shields, Michael Sofroniew, Robert Wudlick, Jeanne M. Zanca
Summary: Over the past decade, the spinal cord injury research community has made significant advances and hosted a conference to discuss how to continue advancing research for the benefit of patients. The conference brought together stakeholders such as researchers, clinicians, patients, and industry partners to break down communication barriers and support collaboration to promote spinal cord injury research and clinical options.
JOURNAL OF NEUROTRAUMA
(2021)
Article
Clinical Neurology
Ellen van der Plas, Laurie Gutmann, Dan Thedens, Richard K. Shields, Kathleen Langbehn, Zhihui Guo, Milan Sonka, Peggy Nopoulos
Summary: Quantitative muscle MRI serves as a sensitive marker for early muscle pathology and disease progression in adult-onset myotonic dystrophy type 1 (DM1). Patients with DM1 exhibit reduced muscle volume, increased T2 relaxometry, and fat fraction compared to healthy adults, even in the absence of clinical motor symptoms. The rate of change in muscle volume and T2 relaxometry and fat fraction is faster in DM1 patients compared to controls, indicating more rapid disease progression.
Article
Multidisciplinary Sciences
Timothy R. Koscik, Ellen van der Plas, Laurie Gutmann, Sarah A. Cumming, Darren G. Monckton, Vincent Magnotta, Richard K. Shields, Peggy C. Nopoulos
Summary: The study found that white matter integrity in the brain is significantly related to grip strength and fine motor skills in DM1 patients. Fractional anisotropy was the strongest predictor of grip strength, while radial diffusivity predicted fine motor skills. Systemic white matter degradation may mediate the relationship between DM1 progression and genetic burden with motor outcomes.
SCIENTIFIC REPORTS
(2021)
Article
Clinical Neurology
Stacey L. DeJong, Jayden A. Bisson, Warren G. Darling, Richard K. Shields
Summary: This study aimed to develop methods for assessing corticospinal divergence and muscle coupling using transcranial magnetic stimulation (TMS). The researchers found that the number of muscles responding to TMS and the degree of coactivation increased with intensity, while correlations of MEP amplitudes varied among different muscle pairs, possibly quantifying different levels of muscle coupling.
Article
Neurosciences
Shojiro Nozu, Kristin A. Johnson, Masahiro Takemura, Richard K. Shields
Summary: By disrupting somatosensory information with a foam pad, participants demonstrated different postural control strategies with and without disruption during a posteromedial reach test. Strategies for ankle and trunk movement may influence the posteromedial reach distance.
Article
Orthopedics
Michael A. Petrie, Eric B. Taylor, Manish Suneja, Richard K. Shields
Summary: Physical therapists develop patient-centered exercise prescriptions to address the various stressors in individuals' health. This report summarizes factors specific to spinal cord injury that need to be considered in precision prescription of muscle activity. It also presents a genomic and epigenomic analysis of muscle signaling pathways during different types of electrically induced exercise.
Editorial Material
Orthopedics
Richard K. Shields
Article
Orthopedics
Richard K. Shields, Shauna Dudley-Javoroski
Summary: Epigenetic processes regulate gene expression by tagging DNA, affecting individual health and disease. New research shows that non-biological factors such as social stress and poverty can trigger epigenetic adaptations in gene pathways, impacting chronic diseases. Epigenetic processes thus connect the genome with social determinants of health.
Article
Neurosciences
Colleen L. Bringman, Richard K. Shields, Stacey L. DeJong
Summary: The study aimed to investigate the modulation of corticospinal pathway on spinal reflex excitability. The results showed that subthreshold TMS pulses could partially restore the H-reflex when it was almost completely suppressed by lower extremity vibration. This suggests that the disinhibition of the H-reflex by corticospinal signals may play a role in the control of voluntary movement.
EXPERIMENTAL BRAIN RESEARCH
(2022)
Article
Orthopedics
Shauna Dudley-Javoroski, Richard K. Shields
Summary: The Benchmarking in Academic Physical Therapy study develops performance benchmarks for physical therapist education using a survey. The study reveals strengths and challenges in physical therapist education, such as emphasis on problem solving/critical thinking and clinical reasoning, and issues with diversity and student debt.
Article
Clinical Neurology
Timothy R. Koscik, Ellen van der Plas, Jeffrey D. Long, Stephen Cross, Laurie Gutmann, Sarah A. Cumming, Darren G. Monckton, Richard K. Shields, Vincent Magnotta, Peggy C. Nopoulos
Summary: This study compared the changes in white matter microstructure, functional measures, and clinical symptoms in patients with myotonic dystrophy type 1. The results showed that indices of white matter health were associated with functional performance and could accurately reflect disease progression. These findings are crucial for the design of clinical trials.
NEUROMUSCULAR DISORDERS
(2023)
Article
Education & Educational Research
Richard K. Shields, Manish Suneja, Bridget E. Shields, Josef N. Tofte, Shauna Dudley-Javoroski
Summary: This study examines whether the average educational debt for healthcare graduates in the United States can be supported by entry-level salaries, and explores whether trainees from minoritized backgrounds have higher educational debt than their peers in physical therapy.
BMC MEDICAL EDUCATION
(2023)
Article
Sport Sciences
Michael A. Petrie, Kristin A. Johnson, Olga Dubey, Richard K. Shields
Summary: Exercise is an effective medication for managing glucose control issues, but healthcare providers' recommendation timing does not align with best practice suggestions.
JOURNAL OF FUNCTIONAL MORPHOLOGY AND KINESIOLOGY
(2023)
Article
Sport Sciences
Amy L. Kimball, Michael A. Petrie, Patrick M. Mccue, Kristin A. Johnson, Richard K. Shields
Summary: After spinal cord injury (SCI), prolonged sitting and inactivity can lead to changes in body composition, such as increased visceral adipose tissue (VAT) thickness, which is associated with impaired glucose tolerance. This study suggests that VAT may serve as an important indicator of leanness and that mobility methods may influence glucose tolerance for individuals with SCI.
JOURNAL OF FUNCTIONAL MORPHOLOGY AND KINESIOLOGY
(2023)
Article
Clinical Neurology
Jaakko Vallinoja, Timo Nurmi, Julia Jaatela, Vincent Wens, Mathieu Bourguignon, Helena Maenpaa, Harri Piitulainen
Summary: The study aimed to assess the effects of lesions related to spastic diplegic cerebral palsy on functional connectivity. Using multiple imaging modalities, the researchers found enhanced functional connectivity in the sensorimotor network of individuals with spastic diplegic cerebral palsy, which was not correlated with hand coordination performance.
CLINICAL NEUROPHYSIOLOGY
(2024)
Article
Clinical Neurology
Francesca Ginatempo, Nicola Loi, John C. Rothwell, Franca Deriu
Summary: This study comprehensively investigated sensorimotor integration in the cranial-cervical muscles of healthy adults and found that the integration of sensory inputs with motor output is profoundly influenced by the type of sensory afferent involved and the functional role played by the target muscle.
CLINICAL NEUROPHYSIOLOGY
(2024)
