RecruitingOBSERVATIONAL

High Intensity Interval Training Versus Moderate Intensity Continuous Training in Frail Elderly

This study, happening in France, focuses on older adults who are experiencing frailty. Frailty means someone might be a bit weaker or slower, making them more likely to lose their independence. The researchers are comparing two different exercise approaches: high-intensity interval training (HIIT), which involves short bursts of hard effort followed by rest, and moderate-intensity continuous training (MICT), where exercise is steady and less intense. Both types of exercise are done on a stationary bike. The main goal is to figure out which exercise method is most effective at helping older adults regain their strength, improve their overall ability to do daily activities, and ultimately stay independent for longer. This is part of looking at how different exercise plans already used in hospitals can be made even better.

At a glance

Status

Recruiting

Sponsor

University Hospital, Grenoble

Enrolment target

Start

11 Dec 2025

Estimated completion

01 Feb 2028

Frail Elderly

What is this study about?

As people get older, some might start to feel a bit weaker or less steady on their feet. This is often called 'frailty' and it can make everyday tasks harder and increase the risk of losing independence. Because the number of older people is growing, finding good ways to help them stay active and independent is really important.

This study in France is looking at how different types of exercise can help older adults who are experiencing frailty. Currently, many different exercise plans are used, but it's not always clear which one is best. The researchers want to compare two specific methods of exercise, both done on a stationary bike: one is called High-Intensity Interval Training (HIIT), where you work hard for short periods then rest, and the other is Moderate-Intensity Continuous Training (MICT), which is a steady, less intense workout.

By comparing these two exercise types, the study aims to understand which approach is more effective at improving strength, balance, and general ability to move around. The hope is that the results will help doctors and exercise specialists choose the best exercise programmes to help older adults stay healthy, active, and independent for as long as possible.

Key takeaways

This study compares two types of exercise for older adults experiencing frailty.
The goal is to help participants stay independent and improve their quality of life.
Exercise will be done on a stationary bike (ergocycle) under supervision.
It aims to find the most effective exercise method for this group.
Participants must be 70 or older and have certain signs of frailty.

Who may be eligible?

This study is looking for adults who are 70 years old or older. To join, you should show at least one sign of frailty, which might include things like losing weight without trying, feeling tired often, walking slowly, or having less strength.

You also need to be able to safely use a stationary exercise bike. Your doctor will check if you are medically stable and that exercising won't make any existing health conditions worse. You must also agree that your anonymous health information can be used for the study.

You cannot join if you have serious health problems that would make exercise unsafe, or if you have severe memory or brain conditions that would prevent you from using the bike safely. Also, if you are currently in another study or have recently been in one that could affect these results, you wouldn't be able to take part.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

Are you 70 years old or older?
Do you have at least one sign of frailty (e.g., unexplained weight loss, tiredness, slow walking, low strength)?
Can you safely use a stationary exercise bike?
Are you medically stable, without any acute illness that exercise might worsen?
Are you willing to have your anonymous health information used for the study?

Answer every question to see your result.

What does participation involve?

The study involves taking part in an exercise training program. You would be asked to exercise on a special stationary bike (called an ergocycle) either using high-intensity interval training (short bursts of hard work) or moderate-intensity continuous training (steady, less intense exercise). The study is designed to see which type of exercise works best. The total duration of your participation is not specified, but it's part of routine care at the hospital's Health and Sport Center. You'd likely have regular exercise sessions and assessments to track your progress. The exercise programme and how long it lasts will be explained more fully if you are considered for the study.

Potential risks and benefits

Taking part in this study means you will be exercising, which can have many benefits like improving your strength and overall movement, helping you stay independent, and boosting your quality of life. As with any exercise, there's always a small risk of muscle soreness or minor injury, but the exercises are supervised and tailored for older adults. Your doctor will assess you to make sure exercising is safe for you. You are free to withdraw from the study at any time without giving a reason, and this will not affect your usual medical care.

Locations (1)

University Grenoble alpes
Verified postcode
Grenoble, France· Recruiting

Common questions

What does 'frail elderly' mean?

It refers to older adults who might be a bit weaker or slower, meaning they have less reserve energy and might find daily tasks harder, making them more at risk of losing their independence.

What's the difference between the two types of exercise?

High-intensity interval training (HIIT) means short periods of hard exercise followed by short rests. Moderate-intensity continuous training (MICT) means exercising at a steady, less intense pace for a longer time.

Will I have to take any new medicines?

No, this study is about exercise training, not new medications. Your existing medical care will continue as usual.

Is the exercise supervised?

Yes, the exercise is part of the routine care at the Health and Sport Center of the hospital, meaning trained professionals would oversee it.

How long will I be in the study if I join?

The exact duration isn't specified, but you would be participating in an exercise program and having assessments as part of the study.

How to find out more

Flore PATRICE

pflore@chu-grenoble.fr 04 76 76 72 26 Official trial record

Always speak to your GP or specialist before deciding to take part in a study.