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

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02563249

Acronym

DEXTER0g

Enrollment

Registered

2015-09-30

Start date

2012-05-31

Completion date

Unknown

Last updated

2015-09-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

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.

Interventions

OTHERParabolic flight

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

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

BASIC_SCIENCE

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 65 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame
Gravity induced changes in oculo-manual coordination measured by the latency (ms) of anticipatory eye movement measurement with videooculography	baseline
Gravity induced changes in grip strength (newton) exerted between the fingers measured with strain gauges	baseline

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026