Jason DeFreitas

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Professor and Department Chair

Syracuse University

United States

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About

Jason DeFreitas is a Professor and Department Chair at Syracuse University, located in the United States. His research areas include transcranial magnetic stimulation techniques, motor control in muscle activation, and rehabilitation strategies following anterior cruciate ligament reconstruction. Recent publications focus on muscle excitability, fatigue protocols, and torque development across different age groups.

Recent Grants

Grant: Close

Can low-intensity exercise performed to fatigue recruit high-threshold motor units?

Open Date: 2016-01-01

Close Date: 2017-01-01

Grant: Close

Examination of power, muscle excitation, and functional ability across the age span

Open Date: 2015-01-01

Close Date: 2016-01-01

Grant: Close

Muscle Spindle and Motor Unit Function with Aging

Open Date: 2014-01-01

Close Date: 2017-01-01

Articles (10)

In this study, we used a task-based functional magnetic resonance imaging (fMRI) paradigm to show that activity in the pontine reticular nuclei scales linearly with increasing force during a handgrip task. These findings directly support recently proposed hypotheses that the reticulospinal tract may play an important role in modulating force production in humans.

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2024

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2024

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2024

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2023

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2023

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2022

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2022

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2021

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Grant E. Norte

UNITED STATES

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Jason DeFreitas

Research Interests

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About

Recent Grants

Articles (10)

Activity in the pontine reticular nuclei scales with handgrip force in humans

A comparison of techniques to determine active motor threshold for transcranial magnetic stimulation research

fNIRS is capable of distinguishing laterality of lower body contractions

Potential role of cross-education in early-stage rehabilitation after anterior cruciate ligament reconstruction

Sex-Specific Reliability of Lower-Limb Corticospinal Excitability and Silent Periods

The Influence of Motor Unit Number and Muscle Activation on Early Phase Rate of Torque Development in Younger and Older Men

Effects of a Thorstensson fatiguing protocol on isometric and isokinetic performance

Bilateral deficit in strength but not rapid force during maximal handgrip contractions

Ipsilateral and contralateral responses following unimanual fatigue with and without illusionary mirror visual feedback

Does strict validation criteria for individual motor units alter population-based regression models of the motor unit pool?

Collaborators (8)

Mitchel Magrini

Joshua Carr

Matt Stock

Jesus Alberto Hernandez Sarabia

Nathaniel Jenkins

Justin W. Andrushko

Dustin R. Grooms

Grant E. Norte

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