Sitting less, moving more: new study reveals Body-Wide effects of activity changes
NCT ID NCT06377254
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how increasing or decreasing physical activity changes the way your body works. Forty overweight adults aged 50-65 will either become less active for 3 months then retrain, or become more active for 6 months. Researchers will measure fitness, muscle strength, brain function, and take tissue samples to understand the full-body impact.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could reveal how physical activity and inactivity impact multiple body systems, helping shape better public health advice for healthy aging.
- What could go wrong
- This is an early-stage observational intervention with only 40 participants. Results may not apply to everyone, and the study does not test a treatment or cure.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2024
- Expected to finish
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Oct 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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50 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Group 1 ('non-sedentary') self-reporting \<6 sedentary hrs/day, not actively involved in exercise training or a regular physical activity regimen (\>8,000 steps/day). * Group 2 ('sedentary') self-reporting ≥8 waking hrs/day in sedentary activities and/or ≤5,000 steps/day. * Aged 50-65y. * Overweight (BMI 25-35 kg/m2). * Waist circumference ≥94cm (males) and ≥80cm (females). * Willing to alter physical activity levels as instructed for 6 months * Without neurological or psychiatric diseases, motor or cognitive restrictions * Ability to give informed consent Exclusion Criteria: * Regular medication use that could interfere with measures * A history, or evidence, of chronic cardiovascular, metabolic, musculoskeletal, renal or respiratory diseases. * Experiencing 'long-COVID', inflammatory bowel disease or malignancy. * Uncontrolled hypertension. Stage 1 hypertension (BP ≤160/100mmHg) with no other signs of cardiovascular disease, and blood pressure (BP) managed by routine medication will not be an exclusion. * People employed in jobs that would preclude reducing step count and night-shift workers. * Females who are pre/peri-menopausal, (due to effect of oestrogen fluctuations on primary outcomes and the longitudinal study design), but individuals stable on hormone replacement therapy are eligible. * Contraindications for MRI. * Allergy or sensitivity to local anaesthesia, or dressing adhesive
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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David Greenfield Human Physiology Unit
RECRUITINGNottingham, Notts, NG72UH, United Kingdom
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