CClinicalTrials.gg
WithdrawnNCT04200846FLEXUpdated Jun 29, 2021

Frailty in Liver Transplant Exercise (FLEX) Trial

An interventional study of Exercise intervention in Frailty and Liver Transplants, sponsored by Milton S. Hershey Medical Center. Withdrawn. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2021-06-29.

Sponsored by Milton S. Hershey Medical Center · Not applicable, Interventional, and Treatment

Why this study was withdrawn
No funding
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

Frailty is common in patients with end-stage liver disease. It's characterized by reduced strength, low endurance and reduced physical function. While exercise intervention can improve frailty in geriatric patients without liver disease, whether or not exercise intervention can improve frailty in liver transplant candidates remains unknown.

Read the detailed description

The long-term goal is to better understand how exercise impacts frailty in order to identify treatments that can improve both patient-oriented outcomes and access to liver transplantation for end-stage liver disease patients. The specific objective of this proposal is to generate pilot feasibility data required for future multicenter R01 application to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) which will test the novel central hypothesis that exercise improves frailty and lessens waiting-list mortality. Additionally, another goal of the study is to establish an optimal frailty tool for liver transplant candidates.

02

Conditions studied

  • Frailty
  • Liver Transplants

Browse trials for

03

In context

Frailty

1,199 studies on the registry are indexed under Frailty; 430 are open to participants now.

Browse Frailty studies →

Lead sponsor

Milton S. Hershey Medical Center is the lead sponsor of 480 studies on the registry; 61 are open to participants now.

Of its 56 completed or terminated interventional studies of FDA-regulated products, 42 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

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

Inclusion criteria

  • Adults age ≥18 or ≤75 years
  • Frail as defined by a LFI score of >4.5
  • Under evaluation or listed for liver transplant

Exclusion criteria

Exclusion Criteria:

  • Active cardiac symptoms (e.g., chest pain, shortness of breath at rest, palpitations)
  • Positive response to Get Active Questionnaire (GAQ) (validated activity questionnaire that indicates if exercise is unsafe)
  • Institutionalized/prisoner
  • Severe medical comorbidities/psychiatric illness at the discretion of the Study Principal Investigator (PI)
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    Exercise intervention

    Private supervised strength training exercise (e.g., body weight or dumbbell exercises) will occur in the Cancer Center Exercise Medicine Unit or the Hershey Center for Applied Research (HCAR) two days a week. In addition, subjects will be instructed to exercise on their own, at home, three days a week doing 30 minutes of moderate intensity aerobic exercise (e.g., walking at 45-55% maximum heart rate determined by the formula max heart rate = 220bpm - 0.64\*age in years).

    Behavioral: Exercise intervention

  • No intervention
    Control

    Subjects in the control condition will be instructed to continue their medical care at the discretion of their treating medical professional and to maintain their current exercise level. Weekly phone calls will be performed to ensure adherence to the protocol (no changes in activity). Subjects will report to Penn State on a monthly basis for interim history and physical to confirm self-reports. Subjects will also be given a FitBit ChargeHR3 and downloaded data review will be performed monthly at the in-person visits.

Interventions

  • BehavioralExercise intervention

    Subjects in this group will be asked to exercise 5 days a week. Two days on-site with an Exercise Physiologist and the other 3 days at home.

06

What researchers measure

Primary outcomes

  1. Number of participants able to complete the trial

    Defined as 50% of subjects completing \>80% of the sessions.

    Time frame: up to 52 weeks

  2. Incidence of Treatment-Emergent Adverse Events as assessed by GCP guidelines

    This study aims to examine the incidence of adverse events. If exercise in frail liver transplant candidates is safe. 5% serious adverse events or fewer will deem the trial as safe. If more than 5% serious adverse events occur, the trial is determined to be unsafe.

    Time frame: up to 52 weeks

  3. Rate of enrollment

    Net enrollment rates, which are calculated by dividing the number of subjects approached by the number of subjects that enroll in the trial. The work with the ongoing NASHFit and completed ENACT Trials and the work of others performing exercise-based trials in patients with cirrhosis(50) has established \>50% enrollment of subjects approached as a threshold of acceptability.

    Time frame: up to 52 weeks

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 29, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04200846
Lead sponsor
Milton S. Hershey Medical Center
Responsible party
Jonathan Stine (Assistant Professor of Medicine & Public Health Sciences, Milton S. Hershey Medical Center) — Principal investigator
First posted
Dec 16, 2019
Start date
Jul 1, 2021 (estimated)
Primary completion
Feb 1, 2022 (estimated)
Completion
Dec 1, 2022 (estimated)
Last update
Jun 29, 2021

Oversight

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

Not currently enrolling

This study is withdrawn, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion