ClinicalTrials.gg
RecruitingNCT07040878Updated Jun 27, 2025

Antigravity Treadmill After Joint Arthroplasty

An interventional study of Antigravity Treadmill Training and Body Weight-Supported Treadmill Training in Arthropathy and Osteoarthritis, sponsored by Wroclaw University of Health and Sport Sciences. Recruiting at 1 site in Poland. Open to participants aged 60 Years to 75 Years. Per ClinicalTrials.gov, last updated 2025-06-27.

Primary conditionOsteoarthritisRegistry: Joint DiseasesReclassifiedWhy we changed it
Registry
Joint Diseases — the first condition term the registry derived for this study.
ClinicalTrials.gg
Osteoarthritis
Why
  1. The study's listed conditions name Osteoarthritis, a narrower term within Joint Diseases.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Wroclaw University of Health and Sport Sciences · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as recruiting.
  • Started May 2025; still recruiting 1 year 5 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
60 Years to 75 Years
Sex
All
01

Study summary

The study aims to evaluate the efficacy of antigravity treadmill training and body weight-supported treadmill training in the rehabilitation of elderly patients (60-75 years) following hip or knee arthroplasty.

Read the detailed description

This randomized controlled trial will recruit 60 patients aged 60-75 years, within 3 months after total hip or knee arthroplasty, admitted to the Rehabilitation Unit of St. Jadwiga Hospital in Trzebnica. Participants will be randomly assigned to one of three groups: (i) body weight-supported treadmill group (n=20), (ii) antigravity treadmill group (n=20), or (iii) control group receiving conventional gait training (n=20). All patients will receive comprehensive daily therapy for 6 weeks, including kinesitherapy, ergotherapy, and physical therapy procedures under professional supervision.

02

Conditions studied

  • Arthropathy
  • Osteoarthritis

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Keywords

  • arthroplasty
  • balance
  • fall risk
  • gait rehabilitation
  • psychological outcomes
03

In context

Osteoarthritis Reclassified

2,974 studies on the registry are indexed under Osteoarthritis; 438 are open to participants now.

This study's planned enrollment of 60 is below the median of 80 across 2,240 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Wroclaw University of Health and Sport Sciences is the lead sponsor of 46 studies on the registry; 10 are open to participants now.

Compared within Osteoarthritis, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Joint Diseases. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
60 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • individuals who have recently undergone hip or knee joint arthroplasty surgeries aged 60 years and above.

Exclusion criteria

Exclusion Criteria:

  • cognitive impairments that prevent independent completion of research questionnaires
  • history of consciousness disturbances, psychotic disorders, bipolar disorder, or other severe psychiatric illnesses
  • functional status preventing independent ambulation (wheelchair-bound or bedridden patients; orthopedic devices such as crutches or walker allowed)
  • refusal to participate in the study at any stage
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    Antigravity Treadmill Training Group

    Conventional orthopedic rehabilitation supplemented by antigravity yreadmill training

    Behavioral: Antigravity Treadmill Training · Behavioral: Conventional rehabilitation

  • Active comparator
    Body Weight-Supported Treadmill Training

    Conventional orthopedic rehabilitation supplemented by body weight-supported treadmill training

    Behavioral: Body Weight-Supported Treadmill Training · Behavioral: Conventional rehabilitation

  • Active comparator
    Control Group

    Conventional orthopedic rehabilitation

    Behavioral: Conventional rehabilitation

Interventions

  • BehavioralAntigravity Treadmill Training

    Antigravity treadmill training uses air pressure to reduce effective body weight during walking, minimizing joint load while preserving gait mechanics. The 6-week intervention includes five sessions per week within a 120-minute daily kinesitherapy program. Treadmill speed is individualized at baseline and increased by 0.5 km/h every two weeks. Unloading is progressively reduced: 60% support in weeks 1-2, 40% in weeks 3-4, and 20% in weeks 5-6, allowing gradual adaptation to full weight-bearing.

  • BehavioralBody Weight-Supported Treadmill Training

    Body weight-supported treadmill training uses a harness-based system to partially offload body weight, promoting safe ambulation and gait normalization in early postoperative rehabilitation. The 6-week intervention includes five sessions per week within the 120-minute daily kinesitherapy program. Treadmill speed is individualized at baseline and increased by 0.5 km/h every two weeks, depending on tolerance. The unloading level remains constant and is individually adjusted to ensure safety.

  • BehavioralConventional rehabilitation

    Conventional rehabilitation follows standard postoperative protocols after hip or knee arthroplasty. The 6-week program includes five weekly sessions. Gait training is conducted in hospital corridors under physiotherapist supervision, using assistive devices as needed (crutches, walkers). Daily therapy includes 120 minutes of kinesiotherapy (general exercises and gait training), 30 minutes of ergotherapy to improve functional independence, and three individualized physical therapy procedures (laser therapy, magnetic therapy, or electrotherapy) tailored to patient needs.

06

What researchers measure

Primary outcomes

  1. Western Ontario and McMaster Universities Osteoarthritis Index

    The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) is a 24-item questionnaire used to assess pain, stiffness, and physical function in patients with hip or knee osteoarthritis. Each item is scored on a scale from 0 to 4, with higher scores indicating greater severity. The total score is calculated as the sum of three subscales: pain (0-20 points), stiffness (0-8 points), and physical function (0-68 points), yielding a global score range of 0 to 96. Higher scores reflect worse joint function, greater pain, and more severe stiffness.

    Time frame: Baseline and after 6 weeks of intervention

Secondary outcomes

  1. Berg Balance Scale

    The Berg Balance Scale (BBS) is a 14-item instrument assessing static and dynamic balance, scored 0 to 4 per item, with a total score ranging from 0 to 56. Higher scores indicate better balance and lower fall risk.

    Time frame: Baseline and after 6 weeks of intervention

  2. Patient Health Questionnaire

    The Patient Health Questionnaire (PHQ-9) is a 9-item self-report scale measuring depressive symptoms, scored from 0 to 3 per item, with total scores ranging from 0 to 27. Higher scores indicate greater depression severity.

    Time frame: Baseline and after 6 weeks of intervention

  3. Perceived Stress Scale

    The Perceived Stress Scale (PSS-10) is a 10-item instrument assessing perceived stress over the past month. Each item is rated 0-4, with total scores ranging from 0 to 40. Higher scores indicate higher perceived stress levels.

    Time frame: Baseline and after 6 weeks of intervention

  4. Falls Efficacy Scale-International

    The Falls Efficacy Scale-International (FES-I) consists of 16 items assessing concern about falling during various activities. Items are scored from 1 to 4, with total scores ranging from 16 to 64. Higher scores reflect greater fear of falling.

    Time frame: Baseline and after 6 weeks of intervention

  5. Step Length

    Step length (in centimetres) for the left and right lower limbs will be assessed during walking on an antigravity treadmill with integrated gait analysis. Values will be reported separately for each leg. An increase in step length is expected following the intervention.

    Time frame: Baseline and after 6 weeks of intervention

  6. Step Time

    Step time (in milliseconds) for the left and right lower limbs will be measured during treadmill walking using an antigravity system. Values will be reported separately for each leg. A decrease in step time is expected following the intervention.

    Time frame: Baseline and after 6 weeks of intervention

  7. Stance Phase Duration

    Stance phase duration (in percent of gait cycle) for the left and right lower limbs will be recorded during walking on an antigravity treadmill. Values will be reported separately for each leg.

    Time frame: Baseline and after 6 weeks of intervention

  8. Swing Phase Duration

    Swing phase duration (in percent of gait cycle) for the left and right lower limbs will be assessed using gait analysis on an antigravity treadmill. Results will be reported separately for each leg.

    Time frame: Baseline and after 6 weeks of intervention

  9. Vertical Load

    Vertical load (in percent of body weight) applied by the left and right lower limbs during stance will be measured using an antigravity treadmill with embedded load sensors. Values will be reported separately for each leg.

    Time frame: Baseline and after 6 weeks of intervention

07

Study locations

1 of 1 sites recruiting
  • St. Hedwig of Silesia Hospital in Trzebnica
    Trzebnica, Lower Silesian Voivodeship 55-100, Poland
    Recruiting
    • Justyna Mazurek, PhD · Contactjustyna.mazurek@umed.wroc.pl · 695180984
    • Małgorzata Ratajczyk, MSc · Sub investigator
    • Olga Witczak · Sub investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2025 (actual). Primary completion is estimated for Dec 2025, 7 months after the start.

Of 578 non-industry interventional studies with no phase under Osteoarthritis, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 52. This study's planned 7 months is below that.

Counting every sponsor, half of 713 studies reached it within 29 months; a quarter within 11 and three quarters within 58.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 17, 2025
First posted
Jun 27, 2025
StartActual
May 15, 2025
Primary completionEst.
Dec 31, 2025
CompletionEst.
Jun 30, 2026
Last update
Jun 27, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 27, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07040878
Lead sponsor
Wroclaw University of Health and Sport Sciences
Collaborators
Wroclaw Medical University, Jan Dlugosz University in Czestochowa
Responsible party
Błażej Cieślik (Professor, Wroclaw University of Health and Sport Sciences) — Principal investigator
First posted
Jun 27, 2025
Start date
May 15, 2025
Primary completion
Dec 31, 2025 (estimated)
Completion
Jun 30, 2026 (estimated)
Last update
Jun 27, 2025

Study contacts

Justyna Mazurek, PhD
Contact
justyna.mazurek@umed.wroc.pl
695180984 ext. +48
Błażej Cieślik, PhD
Contact
blaze.cieslik@gmail.com
500138483 ext. +48
Justyna Mazurek, PhD
principal investigator · Wroclaw Medical University
Błażej Cieślik, PhD
principal investigator · Wroclaw University of Health and Sport Sciences
Joanna Szczepańska-Gieracha, Prof.
study director · Wroclaw University of Health and Sport Sciences

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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