Healthy adults
Conditions
Interventions
Participants undergo measurements of lower-limb muscle morphological and metabolic characteristics using MRI, followed by treadmill running at fixed speeds. During running, running economy and biomech
Sponsors
Ritsumeikan University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Participants will include 30 male and female endurance runners aged 18-30 years who have achieved a personal best marathon time within the past year of under 4 hours for males and under 4 hours 30 minutes for females, or who have achieved an equivalent performance level based on the World Athletics (WA) scoring system using race distances of 5 km or longer. The corresponding WA scores are 54 points for males and 259 points for females. In addition, 30 healthy male and female adults aged 18-30 years who do not engage in running more than twice per week will also be included.
Exclusion criteria
Exclusion criteria: -Individuals who do not meet the specified age range. -Endurance runners who have not performed long-distance running (3 km or more per session, 2 times or more per week) within the past 6 months. -Individuals with a history of Achilles tendon rupture or anterior cruciate ligament injury within the past 6 months, or those currently restricted from exercise by a physician. -Individuals currently undergoing treatment for injury or illness. -Individuals with mental or physical impairments (psychiatric or visual disorders) that may interfere with study participation. -Individuals requiring assistive devices for daily activities due to injury or disability. -Individuals experiencing pain that prevents comfortable execution of the running tasks specified in this study. -Individuals with a history of claustrophobia or panic disorder. -Individuals unable to remain still during measurements. Pregnant individuals. -Individuals with a history of epileptic seizures. -Individuals with implanted medical devices such as cardiac pacemakers, defibrillators, or artificial heart valves. -Individuals with metal in the body (orthodontic appliances, dental prostheses, depending on material, surgical clips, etc.). -Individuals with tattoos (due to potential interaction with magnetic fields).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Energy cost during steady-state running at a fixed speed (running economy) | — |
Countries
Japan
Contacts
Public ContactEihara Yuuri
Ritsumeikan University Research Organization of Science and Technology
Outcome results
None listed