Osteoarthritis, HipNCT07170215
Effect of Anti-gravity Treadmill Training After Total Hip Arthroplasty
A study testing antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA) in people with Osteoarthritis, Hip, run by University of Rijeka at 1 site in Croatia.
Trial summary
Background/Objectives: Total hip arthroplasty is one of the most common orthopedic procedures. When the surgery is successful and followed by high-quality physiotherapy, patients' quality of life usually improves and they return to their daily activities more qui-ckly.. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Osteoarthritis, Hip
- What is being tested?
- antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA)
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 34 participants
- Where
- 1 siteCroatia
- Study dates
- 15 Jan 2023to 30 Jul 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- The inclusion criteria was primary osteoarthritis of the hip joint.
Who cannot join
- Exclusion criteria included: Undergoing surgery using a different technique, revision hip replacement, acute illness, cognitive impairment, and declining participation in the study.
Trial locations and contacts
1 site in 1 country.
About this study
Background/Objectives: Total hip arthroplasty is one of the most common orthopedic procedures. When the surgery is successful and followed by high-quality physiotherapy, patients' quality of life usually improves and they return to their daily activities more qui-ckly.. Rehabilitation methods and medical devices are constantly evolving, to accelerate functional improvement. The aim of the study is to investigate the impact of the antigra-vity treadmill on the functional outcomes after total hip arthroplasty. Methods: A single centre, randomised, controlled, open label trial was conduct in Hospital for Medical Re-habilitation of the Heart and Lung Diseases and Rheumatism Thalassotherapia Opatija. 34 subjects were randomly divided into two groups: experimental (18) and control (16). The outcome measures included strength of the abductor muscles, range of motion, visual analogue scale, and Timed Up and Go test and 40-meter Fast Paced Walk test.
- Conditions
- Osteoarthritis, Hip
- Being tested
- antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA)
- Keywords
- pain, functional mobility, muscle strenght, total hip arthroplasty, THA
- Medical subject headings
- Osteoarthritis, Hip, Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA)Device
Antigravity treadmill training in the experimental group (EG) involved walking in a straight line at a self-selected, com-fortable pace-without running, shortness of breath, or pain. The treadmill's chamber was set to reduce the participant's effective body weight to 20% of their actual body weight (slight unloading was applied to reduce the need for handrail support and to prevent the use of compensatory mechanisms).
| Study group | Role | What they receive |
|---|---|---|
| experimental group (EG) | Experimental | Each session included 25 minutes of individualized therapeutic exercises focused on bre-athing, mobility, strength, and balance. In addition, participants received 25 minutes of electrical stimulation of the quadriceps femoris muscle and 25 minutes of hydrotherapy in a swimming pool, for a total of 75 minutes of therapy per session. The experimental group (EG) also completed 20 minutes of daily exercise on an antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, USA), supervised by a physiothera-pist Receives: Device: antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA) |
| control group (CG) | No intervention | Each session inclu-ded 25 minutes of individualized therapeutic exercises focused on breathing, mobility, strength, and balance. In addition, participants received 25 minutes of electrical stimula-tion of the quadriceps femoris muscle and 25 minutes of hydrotherapy in a swimming pool, for a total of 75 minutes of therapy per session. |
What is being measured
The primary outcome is the main question the study is designed to answer.
hip abductor muscle strength
The effects of the antigravity treadmill on hip abductor muscle strength was the primary outcome.
Measured: From enrollment to the end of treatment was 3 weeks.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Sep 2025
- Study start15 Jan 2023
- Primary completion30 Jul 2023
- Study completion30 Jul 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Osteoarthritis, HipStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Patients were randomly assigned to one of two groups: the experimental group (EG) (n = 18) received antigravity treadmill therapy in combination with a standard rehabilita-tion protocol and the control group (CG) (n = 16) followed only the conventional rehabili-tation protocol.
- Masking
- None (open label)
- Enrolment
- 34 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Rijeka
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mirela Vuckovic, University of Rijeka
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07170215
- Sponsor's protocol ID
- THR-2025
- Status last verified
- Sep 2025
- First submitted
- 5 Sep 2025
- Last updated
- 12 Sep 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Sep 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Anti-gravity Treadmill Training After Total Hip Arthroplasty
- ClinicalTrials.gov ID
- NCT07170215
- Acronym / sponsor ID
- THR-2025
- Conditions
- Osteoarthritis, Hip
- Keywords
- pain, functional mobility, muscle strenght, total hip arthroplasty, THA
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 34 participants (actual)
- Lead sponsor
- University of RijekaUniversity, hospital or other
- Study start
- 15 Jan 2023 (actual)
- Primary completion
- 30 Jul 2023 (actual)
- Study completion
- 30 Jul 2023 (actual)
- First posted
- 12 Sep 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Background/Objectives: Total hip arthroplasty is one of the most common orthopedic procedures. When the surgery is successful and followed by high-quality physiotherapy, patients' quality of life usually improves and they return to their daily activities more qui-ckly.. Rehabilitation methods and medical devices are constantly evolving, to accelerate functional improvement. The aim of the study is to investigate the impact of the antigra-vity treadmill on the functional outcomes after total hip arthroplasty. Methods: A single centre, randomised, controlled, open label trial was conduct in Hospital for Medical Re-habilitation of the Heart and Lung Diseases and Rheumatism Thalassotherapia Opatija. 34 subjects were randomly divided into two groups: experimental (18) and control (16). The outcome measures included strength of the abductor muscles, range of motion, visual analogue scale, and Timed Up and Go test and 40-meter Fast Paced Walk test.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Patients were randomly assigned to one of two groups: the experimental group (EG) (n = 18) received antigravity treadmill therapy in combination with a standard rehabilita-tion protocol and the control group (CG) (n = 16) followed only the conventional rehabili-tation protocol.
| Arm | Type | Receives |
|---|---|---|
| experimental group (EG) | Experimental | Device: antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA)Each session included 25 minutes of individualized therapeutic exercises focused on bre-athing, mobility, strength, and balance. In addition, participants received 25 minutes of electrical stimulation of the quadriceps femoris muscle and 25 minutes of hydrotherapy in a swimming pool, for a total of 75 minutes of therapy per session. The experimental group (EG) also completed 20 minutes of daily exercise on an antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, USA), supervised by a physiothera-pist |
| control group (CG) | No intervention | –Each session inclu-ded 25 minutes of individualized therapeutic exercises focused on breathing, mobility, strength, and balance. In addition, participants received 25 minutes of electrical stimula-tion of the quadriceps femoris muscle and 25 minutes of hydrotherapy in a swimming pool, for a total of 75 minutes of therapy per session. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- The inclusion criteria was primary osteoarthritis of the hip joint.
Key exclusion criteria (1 listed)
- Exclusion criteria included: Undergoing surgery using a different technique, revision hip replacement, acute illness, cognitive impairment, and declining participation in the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA)Antigravity treadmill training in the experimental group (EG) involved walking in a straight line at a self-selected, com-fortable pace-without running, shortness of breath, or pain. The treadmill's chamber was set to reduce the participant's effective body weight to 20% of their actual body weight (slight unloading was applied to reduce the need for handrail support and to prevent the use of compensatory mechanisms). | Device | experimental group (EG) |
Primary outcome
hip abductor muscle strength
Time frame: From enrollment to the end of treatment was 3 weeks.
The effects of the antigravity treadmill on hip abductor muscle strength was the primary outcome.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Sep 2025.
- Individual participant dataSharing planned: No
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Effects of EDUcation and EXercise Compared to Education Alone on Clinical and Physiological Outcomes in Patients With Hip Osteoarthritis
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing antigravity treadmill (ALTERG VIA, Lifeward CA, Inc., Milmont Drive, Fremont, CA, U-SA) in people with Osteoarthritis, Hip, run by University of Rijeka at 1 site in Croatia.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Croatia. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
hip abductor muscle strength (time frame: From enrollment to the end of treatment was 3 weeks.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Sep 2025.