Effects of Shoe Longitudinal Bending Stiffness
FAT-FLEX
2 other identifiers
interventional
21
1 country
1
Brief Summary
Carbon plates inserted in competitive running shoes have been increasingly used in the past 2-3 years and several investigations have shown that these plates increase the longitudinal bending stiffness (LBS) of the shoe. It leads to a redistribution of muscle work and to a modification of the force generation conditions, which may reduce the energy cost of running (Cr) and improve performance.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Feb 2022
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 17, 2021
CompletedFirst Posted
Study publicly available on registry
May 20, 2021
CompletedStudy Start
First participant enrolled
February 7, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 31, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
June 28, 2022
CompletedJuly 6, 2022
July 1, 2022
4 months
May 17, 2021
July 5, 2022
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
energy cost of running
amount of energy needed to travel a unit of distance
during the last 4 minutes of a 21km race
Secondary Outcomes (1)
ankle plantar flexors
during the last 4 minutes of a 21km race
Study Arms (2)
running with stiff shoes
ACTIVE COMPARATOR21 km of running with stiff shoes followed by a time-to-exhaustion run.
running flexible shoes
EXPERIMENTAL21 km of running flexible shoes followed by a time-to-exhaustion run.
Interventions
21kms of running flexible shoes followed by a time-to-exhaustion run.
Eligibility Criteria
You may qualify if:
- aged ≥ 18 and ≤ 50 years.
- men
- experienced, well-trained endurance runners with the capacity to run 21km in less than 1h 40 and who train more than 5h a week.
- free from muscular, bone or joint injuries
- free from neurologic disease
- approval received from a physician
You may not qualify if:
- currently participating in a structured exercise program
- injury in the 3 months prior to the protocol
- chronic joint pathologies (e.g.: repetitive sprains, patellar or ligament problems)
- the intake of corticosteroids within 3 months (inhalation, infiltration or history of prolonged corticosteroid therapy).
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Unités de Myologie et de Médecine du Sport
Saint-Etienne, 42055, France
Study Officials
- PRINCIPAL INVESTIGATOR
Léonard FEASSON, Phd
CHU SAINT-ETIENNE
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- OTHER
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 17, 2021
First Posted
May 20, 2021
Study Start
February 7, 2022
Primary Completion
May 31, 2022
Study Completion
June 28, 2022
Last Updated
July 6, 2022
Record last verified: 2022-07
Data Sharing
- IPD Sharing
- Will not share