Use of Velocity Monitoring to Prescribe Appropriate Flywheel-based Inertial Training (FIT) Workloads for Exercise in Space Flight
Lance Bollinger
Summary
This study aims to determine how flywheel-based inertial training (FIT) implemented according to principles of velocity-based training (VBT) and High-Intensity Interval Training (HIIT) affects disuse-induced physical de-conditioning including loss of voluntary muscle strength, aerobic capacity, and balance regulation.
Description
The primary objectives of this project are: 1. To assess how 30d of unilateral lower limb suspension (ULLS) with and without FIT exercise affects voluntary and electrically-evoked twitch force, motor unit recruitment, and anisotropic measures. 2. To determine how muscle anisotropy (assessed through diffusion tensor imaging) and motor unit action potential train (MUAPT) characteristics relate to contractile function in loaded and unloaded limbs Secondary objectives include: 1. To assess impact of ULLS with and without FIT on aerobic capacity 2. To assess impact of ULLS with and without FIT o…
Eligibility
- Age range
- 35–45 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * Regularly engaging in aerobic exercise (\> 150min/wk) and resistance exercise (\>1 time per week) for the past 12 months * Education greater than or equal to bachelor's degree (any field) Exclusion Criteria: * Waist circumference \< 55cm or \> 90cm (F) and \< 75cm or \> 100cm (M) * Body mass index \< 18.5 or \> 29.9 * Shoe size \< 25 or \>29cm. * Not regularly engaging in exercise for previous 12 months * Tobacco use within previous 6 months * Blood clotting disorder * Heart arrhythmia * Implanted device which could negatively be affected by electrical impulse or stron…
Interventions
- Othervelocity-based FIT (VBFIT)
Participants will ambulate unilaterally using a shoe modified with a 5cm rocker-style stack and forearm crutches for the duration of the study. All participants will complete two testing sessions prior to ULLS, one testing session at day 13, and two testing sessions at the end of the study. Those assigned to the exercise group will perform a both high-intensity resistance and aerobic exercise three times per week
- OtherNo Exercise
Participants will ambulate unilaterally using a shoe modified with a 5cm rocker-style stack and forearm crutches for the duration of the study. All participants will complete two testing sessions prior to ULLS, one testing session at day 13, and two testing sessions at the end of the study.
Location
- University of KentuckyLexington, Kentucky