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Acute Effects of Sitting Time in Older Adults

NCT02605980 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 65

Last updated 2019-06-11

No results posted yet for this study

Summary

United Kingdom (UK) physical activity guidelines for older people state that "All older adults should minimise the amount of time spent being sedentary (sitting) for extended periods" and "there is sufficient evidence to support a recommendation to reduce sedentary behaviour in older adults, but it is not currently possible to suggest a specific time limit." The aim of this study is to identify key physiological and psychological outcomes influenced by acute periods of inactivity and what older people feel after these acute periods of inactivity. The investigators' main objective is to determine, through direct measurement and self report, the acute functional and cognitive effects of differing periods of sitting time. A secondary objective is to inform older people, professionals and organisations working with older people and policy makers on what duration of sedentary behaviour will lead to adverse outcomes in older people. The investigators will recruit ambulatory men and women aged 70 y and over who will be studied on three separate occasions, approximately one week apart to complete sedentary bouts of 1 h, 2 h and 4 h in a randomised crossover design. The investigators will explore the relationship between sitting time and changes in lower limb explosive power(primary outcome) measured before and after each bout. Secondary outcomes will include timed chair rise; Timed Up and Go; blood pressure; perception of musculoskeletal comfort/pain, vitality; mood and cognitive function. The investigators will also measure the stress hormone cortisol in samples of saliva taken at the start of the sitting session, 1 h, 2h and 4 h later. Characterising the acute effects of sitting time in older adults will enable the design of interventions to reduce sedentary time as well as inform professionals and policy makers on what duration of sedentary behaviour will lead to adverse outcomes.

Conditions

  • Ageing

Interventions

BEHAVIORAL

Sedentary time

Sponsors & Collaborators

  • The Dunhill Medical Trust

    collaborator OTHER

  • Glasgow Caledonian University

    collaborator OTHER

  • University of Birmingham

    lead OTHER

Principal Investigators

  • Carolyn A Greig, PhD · University of Birmingham

Eligibility

Min Age
70 Years
Max Age
95 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2016-03-02
Primary Completion
2018-11-26
Completion
2018-12-31

Countries

  • United Kingdom

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 NCT02605980 on ClinicalTrials.gov