Healthy
Conditions
Keywords
Healthy volunteers, running, energetic cost, limb mechanical characteristics, contractile components, elastic components, healthy men doing regularly physical activities
Brief summary
Inter-individual variability in energetic cost of running may be partly explained by lower limbs mechanical characteristics. The transposition of muscle mechanical model with two components (contractile and elastic) to the whole lower limb mechanical behavior analysis during running. The main aim of present investigation is to study the effects of lower limb mechanical characteristic (force, velocity, stiffness) on the energetic cost of running using a lower limb mechanical approach including both contractile and elastic components.Twenty healthy men will run on a treadmill at 12km.h-1 in 8 different 5 min-conditions. Through conditions, stride frequency, sole stiffness and subject's body weight will be changed to allow artificial variations in lower limb mechanical characteristics. Energetic and non-invasive mechanical measurements analysis will be performed to obtain energetic cost of running and to compute force, velocity and stiffness of lower limbs for each condition.
Detailed description
Main aim: Identify the effect of mechanical characteristic induced on lower limbs on the energetic cost of running. Secondary aim : Minimize the energetic cost of running by lower limb mechanical characteristics optimization.
Interventions
OTHERenergetic and non invasive limb mechanical measurements
Force velocity stiffness running
Sponsors
Centre Hospitalier Universitaire de Saint Etienne
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
MALE
Age
20 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy men being between 20 and 35 years old and doing regularly physical activities * subjects must be able to run at 12 km/h during 15 minutes in aerobic condition * not be sedentary and not do running competitions * be affiliated to a social security system * Sign a written inform consent
Exclusion criteria
* presenting a clinic sign of intolerance to exercise, and particularly to running * overweight subjects * having a medical treatment which may interfere with the running quality or with one of the physiological parameters measured * taking part at the same moment in another medicinal research
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| the energetic cost of running: the energetic cost (Oxygen consumption by meter covered) is calculated by the ratio of oxygen consumption on the running velocity. | within 4 weeks after inclusion |
Countries
France
Outcome results
None listed