Influence of Gravity on Dexterity, Hand-eye Coordination and Perception of Orientation and Distances

NCT02563249 | Unknown

• 1 other identifier: 12-026
• Study Type: interventional
• Target: 90
• Locations: 1 country
• Sites: 1

Brief Summary

If investigators know that the anticipatory mechanisms involved in precision grip take into account the gravity, however it is unclear how they adapt to changes in the gravitational level. The objectives of this study are to study and model the movement control and the mechanisms underlying learning and adapting to the condition of weightlessness. Specifically, i) investigators will determine if a change in the level of gravity is taken into account when controlling grip force and ii) investigators will examine the effects of gravity change on hand-eye coordination.

Conditions

Healthy Volunteers

Outcome Measures

Primary Outcomes (2)

• Gravity induced changes in grip strength (newton) exerted between the fingers measured with strain gauges

  baseline

• Gravity induced changes in oculo-manual coordination measured by the latency (ms) of anticipatory eye movement measurement with videooculography

  baseline

Study Arms (1)

Dexterity, Coordination,Perception measurements

OTHER

Dexterity, Hand-eye Coordination and Perception of Orientation and Distances

Other: Parabolic flight; Other: movements of the upper limb, the gripping force, muscle activity and eye-cephalic subject movement measurements

Interventions

Parabolic flight OTHER

Dexterity, Coordination,Perception measurements

movements of the upper limb, the gripping force, muscle activity and eye-cephalic subject movement measurements OTHER

Dexterity, Coordination,Perception measurements

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Healthy volunteers, male or female
• to 65 years
• Affiliated with a Social Security plan or holder of a European Health Insurance Card (EHIC - European Health Insurance Card - EHIC).
• Having an aeronautical medical certificate of fitness for flight personnel unprofessional functions in civil aviation.
• Agreeing to participate in the study
• Having given informed consent

You may not qualify if:

• person not affiliated to a Social Security Inssurance,
• person with a medical history or any acute or chronic condition that can affect the test results, or by running a risk on during the protocol, especially topics: past or present history of neurological disease, rheumatologic or otologic (hearing or equilibration) OR person with a corrected visual acuity of less than 5 / 10th.
• pregnant women.

Sponsors & Collaborators

• University Hospital, Caen: lead

Study Sites (1)

Umr Ucbn/Inserm U1075 Comete

Caen, Basse-Normandie, 14032, France

RECRUITING

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 23, 2015
• First Posted: September 30, 2015
• Study Start: May 1, 2012
• Primary Completion: December 1, 2015
• Last Updated: September 30, 2015

Record last verified: 2015-09

Locations

FR (1)