TMSpine: The Modulatory Effect of Female Sex Hormones on Spinal Neuroplasticity
University of Texas Southwestern Medical Center
Summary
The goal of this project is to test our central hypothesis that the spinal cord neuroplasticity in females will be modulated by the level of estradiol concentration. under aim 1 we will determine the influence of estradiol fluctuations on spinal circuit excitability post afferent (sensory) mediated subthreshold motor priming in young healthy females and males. We will use an established repetitive peripheral nerve electrical stimulation with a stimulation intensity below the motor threshold to prime the spinal motor circuits. under aim 2 we seek to characterize the input output property of spinal circuit excitability after descending drive (motor) mediated priming in young healthy male participants. in aim 3 we will examine the influence of estradiol fluctuations on descending drive mediated motor priming in young healthy females.
Eligibility
- Age range
- 18–39 years
- Sex
- All
- Healthy volunteers
- Yes
FEMALES Inclusion Criteria: * Ages 18-39 years * Eumenorrheic (regular monthly cycles of 24-35 days) * Moderately active (less than 7 hours of vigorous physical activity per week) * History of pregnancy is allowed if patient is in post-lactation phase Exclusion Criteria: * History of musculoskeletal or orthopedic injury of the spine, hip, knee, ankle or foot * History of neurological injury of the peripheral or central nervous system * Current smoker * History of disordered eating * History of stress fracture in the lower limb * History of a connective tissue disorder (Marfan's syndrome, E…
Interventions
- DeviceMagstim Rapid2
AIM 1: Investigate the estradiol effect on spinal circuit excitability post afferent (sensory) mediated subthreshold motor priming in young healthy women and men. AIM 2: Characterize the Input output property of spinal circuit excitability following descending drive (motor) mediate priming in young healthy participants AIM 3: Examine the estradiol effect on spinal circuit excitability following descending drive (motor) mediated priming in young healthy females
Location
- University of Texas Southwestern Medical CenterDallas, Texas