Influence of Gravity on Dexterity, Hand-eye Coordination and Perception of Orientation and Distances (DEXTER0g)

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.

Study Overview

• Status: Unknown
• Conditions: Healthy Volunteers
• Intervention / Treatment: Other: Parabolic flight; Other: movements of the upper limb, the gripping force, muscle activity and eye-cephalic subject movement measurements

• Study Type: Interventional
• Enrollment (Anticipated): 90
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Basse-Normandie
    • Caen CEDEX, Basse-Normandie, France, 14032
      • Recruiting
      • Umr Ucbn/Inserm U1075 Comete

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Healthy volunteers, male or female
• 18 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

Exclusion Criteria:

• person not affiliated to a Social Security Inssurance,
• person who participated in a clinical trial within the trial below the exclusion period,
• 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.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Dexterity, Coordination,Perception measurements; 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

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
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

Collaborators and Investigators

• Sponsor: University Hospital, Caen

Study record dates

Study Major Dates

• Study Start: May 1, 2012
• Primary Completion (Anticipated): December 1, 2015

Study Registration Dates

• First Submitted: July 23, 2015
• First Submitted That Met QC Criteria: September 28, 2015
• First Posted (Estimate): September 30, 2015

Study Record Updates

• Last Update Posted (Estimate): September 30, 2015
• Last Update Submitted That Met QC Criteria: September 28, 2015
• Last Verified: September 1, 2015

More Information

Terms related to this study

• Other Study ID Numbers: 12-026