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Circadian System Heritability Assessed in Free Living Conditions

NCT03059576 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 106

Last updated 2017-03-27

No results posted yet for this study

Summary

The purpose of this investigation is to assess the role of the genetic and environmental factor on circadian system, in free living conditions by the use of a female twin population. With the results from this study, the investigators expect to advance in the understanding of the role of the endogenicity of the circadian system variables such as temperature, activity, sleep and timing of food intake as the main cause of the coincidence of the rhythms. However, the investigators expected that some parameters are still dependent on environment to a relevant extent and, hence, amenable to change through external interventions.

Conditions

  • Healthy

Interventions

OTHER

Chronobiological status of the subjects

Participation was completely voluntary and not remunerated. The subjects were organized into groups of 5 pairs, and were given an appointment at a university facility located in the city center, where informed consent was signed prior to the procedures indicated below. An informational letter was sent to pre-selected individuals. Later a phone call confirmed their availability. * Temperature rhythm was assessed continuously for 7 days using a temperature sensor and programmed to collect information every 10 min. * Body position and rest-activity rhythm were assessed over the same 7 days using a Acceleration Data Logger that record data every min and placed on the non-dominant arm by means of an elastic band, with its X axis parallel to the humerus bone. * Diet and sleep record were completed over the same week, their sleep schedules and their nutritional status.

Sponsors & Collaborators

  • Universidad de Murcia

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-12-31
Primary Completion
2013-03-31
Completion
2017-02-28

Countries

  • Spain

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03059576 on ClinicalTrials.gov