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Chronic Respiratory DiseaseEffects of HigNCT07867535

High-Intensity Interval Alternating Concentric-Eccentric Training in Chronic Respiratory Disease

A study testing Alternating Concentric-Eccentric High-Intensity Interval Training and Concentric High-Intensity Interval Training in people with Chronic Respiratory Disease and Chronic Obstructive Pulmonary Disease, run by Fu Jen Catholic University Hospital at 1 site in Taiwan.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This randomized controlled trial aims to evaluate the effects of high-intensity interval training incorporating alternating concentric and eccentric cycling on functional performance in adults with chronic respiratory disease undergoing pulmonary rehabilitation. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Alternating Concentric-Eccentric High-Intensity Interval Training and Concentric High-Intensity Interval Training
Could I receive a placebo?
No, everyone receives an active treatment
How many people
45 participants
Where
1 siteTaiwan
Study dates
6 Oct 2026to 31 Jul 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

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

  • Able and willing to provide written informed consent. Adults aged 18 years or older with chronic respiratory disease. Have participated in a pulmonary rehabilitation program for more than 3 months. For participants with an implanted cardioverter-defibrillator (ICD), the programmed maximum heart rate must be higher than the target heart rate used during exercise training.
  • Considered medically suitable for exercise training by a specialist physician.

Who cannot join

  • Presence of a tracheostomy. Use of long-term home oxygen therapy or home mechanical ventilation. Severe left-sided heart failure classified as New York Heart Association (NYHA) functional class III or IV.
  • Diagnosis of a neuromuscular disease. Acute exacerbation of chronic obstructive pulmonary disease (COPD) within the previous 3 months.
  • Unable to complete or cooperate with cardiopulmonary exercise testing.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Taiwan1 site
  • Fu Jen Catholic University Hospital

    New Taipei City, New Taipei City, 24352

    Hui-Wen Hsu, M.S., +886-2-8512-8888 ext. 23426, 76wwocat@gmail.com

Other trials in Taiwan

About this study

Official title: Effects of High-Intensity Interval Alternating Concentric-Eccentric Training on Functional Performance in Patients With Chronic Respiratory Disease: A Randomized Controlled Trial

This randomized controlled trial aims to evaluate the effects of high-intensity interval training incorporating alternating concentric and eccentric cycling on functional performance in adults with chronic respiratory disease undergoing pulmonary rehabilitation. A total of 45 participants will be randomly assigned to one of three groups: high-intensity interval alternating concentric-eccentric training, high-intensity interval concentric training, or usual care. Participants in the exercise training groups will complete a 12-week supervised exercise program, while the usual-care group will continue routine care with self-regulated exercise intensity. Functional performance, exercise capacity, and patient-reported outcomes will be assessed before and after the intervention. The study seeks to determine whether incorporating eccentric exercise into high-intensity interval training can improve physical function while reducing cardiopulmonary and perceived exercise burden.

Read the detailed description

Chronic respiratory diseases, particularly chronic obstructive pulmonary disease (COPD), are commonly associated with exercise intolerance, dyspnea, peripheral muscle dysfunction, and reduced quality of life. Although exercise training is a central component of pulmonary rehabilitation, patients may have difficulty tolerating conventional high-intensity exercise because of ventilatory limitation and leg fatigue.

Eccentric exercise can generate relatively high mechanical workloads with lower oxygen consumption and cardiopulmonary demand than concentric exercise. High-intensity interval training (HIIT), on the other hand, is an effective approach for improving aerobic capacity. This study therefore investigates whether incorporating eccentric cycling into the recovery periods of HIIT can provide additional skeletal muscle stimulation without substantially increasing cardiopulmonary stress.

This is a single-center, prospective, randomized controlled trial conducted at Fu Jen Catholic University Hospital. Forty-five adults with chronic respiratory disease who have participated in pulmonary rehabilitation for more than 3 months will be enrolled and randomly allocated to three groups, with approximately 15 participants in each group: (1) high-intensity interval alternating concentric-eccentric training, (2) high-intensity interval concentric training, or (3) usual care.

Before randomization, participants will undergo graded exercise testing, functional performance assessments, and questionnaires. Participants assigned to the exercise groups will complete supervised training for 12 weeks. The alternating concentric-eccentric group will also undergo an eccentric exercise familiarization period before the formal training program. Participants in the usual-care group will continue routine care with self-regulated exercise intensity for 12 weeks. After the intervention, graded exercise testing, functional assessments, and questionnaires will be repeated.

The study will evaluate changes in functional performance, exercise capacity, muscle function, symptoms, and quality of life to determine whether alternating concentric-eccentric HIIT provides additional benefits compared with conventional concentric HIIT and usual care.

Being tested
Alternating Concentric-Eccentric High-Intensity Interval Training, Concentric High-Intensity Interval Training, Usual Care
Keywords
Pulmonary Rehabilitation, High-Intensity Interval Training, HIIT, Eccentric Exercise, Concentric Exercise, Concentric-Eccentric Training, Exercise Training, Functional Performance, Exercise Capacity, COPD
Medical subject headings
Pulmonary Disease, Chronic Obstructive

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Alternating Concentric-Eccentric High-Intensity Interval TrainingBehavioural

    Also called Alternating Concentric-Eccentric HIIT

    Participants will complete a 2-week eccentric cycling familiarization period followed by 12 weeks of supervised high-intensity interval training, performed twice weekly. Each formal training session lasts approximately 40 minutes and includes a 5-minute warm-up at 30% of peak work rate (Wpeak), 30 minutes of interval training, and a 5-minute cool-down at 30% Wpeak. The interval phase consists of five cycles of 2 minutes of concentric cycling at 80% Wpeak followed by 4 minutes of eccentric cycling performed at the same external workload as the high-intensity concentric interval.

  • Concentric High-Intensity Interval TrainingBehavioural

    Also called Concentric HIIT

    Participants will complete 12 weeks of supervised high-intensity interval concentric cycling training, performed twice weekly. Each session lasts approximately 40 minutes and includes a 5-minute warm-up at 30% of peak work rate (Wpeak), 30 minutes of interval training, and a 5-minute cool-down at 30% Wpeak. The interval phase consists of five cycles of 2 minutes of concentric cycling at 80% Wpeak followed by 4 minutes of concentric cycling at 40% Wpeak.

  • Usual CareBehavioural

    Participants will continue usual care with self-regulated exercise intensity for 12 weeks. No structured high-intensity interval or eccentric cycling training will be provided as part of the study intervention.

Study groups in NCT07867535
Study groupRoleWhat they receive
Alternating Concentric-Eccentric HIITExperimentalParticipants will undergo a 2-week eccentric cycling familiarization period followed by 12 weeks of high-intensity interval training. During the high-intensity intervals, concentric cycling will be performed at 80% of peak work rate, while the recovery intervals will use eccentric cycling at the same external workload.
Receives: Behavioral: Alternating Concentric-Eccentric High-Intensity Interval Training
Concentric HIITActive comparatorParticipants will undergo 12 weeks of high-intensity interval concentric cycling training. High-intensity intervals will be performed at 80% of peak work rate, with recovery intervals performed concentrically at 40% of peak work rate.
Receives: Behavioral: Concentric High-Intensity Interval Training
Usual CareActive comparatorParticipants will continue usual care with self-regulated exercise intensity for 12 weeks.
Receives: Behavioral: Usual Care

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in 6-Minute Walk Distance

    The 6-minute walk test will be used to assess functional exercise capacity. The distance walked in 6 minutes on a 30-meter indoor corridor will be recorded in meters. Change from baseline to post-intervention will be compared among the three study groups.

    Measured: Baseline and 12 weeks

  2. Change in Timed Up and Go Test

    The Timed Up and Go test will be used to assess functional mobility, balance, and gait performance. Participants will stand from a chair, walk 3 meters, turn, return to the chair, and sit down. Three trials will be performed, and the fastest completion time in seconds will be used for analysis.

    Measured: Baseline and 12 weeks

  3. Change in Stair Climbing Performance

    Stair climbing performance will be assessed using a fixed number of stairs to evaluate lower-extremity strength, balance, agility, and functional performance. Completion time will be recorded in seconds.

    Measured: Baseline and 12 weeks

Secondary outcomes (1)
  1. Change in St. George's Respiratory Questionnaire Score

    Health-related quality of life will be assessed using the St. George's Respiratory Questionnaire (SGRQ). Changes in total score from baseline to post-intervention will be evaluated.

    Measured: Baseline and after 12 weeks of formal training

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Oct 2026
  2. Study start6 Oct 2026 (estimated)
  3. Primary completion31 Jul 2027 (estimated)
  4. Study completion31 Jul 2027 (estimated)

Resources

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
Participants will be randomized in parallel to one of three groups: alternating concentric-eccentric high-intensity interval training, concentric high-intensity interval training, or usual care.
Masking
None (open label)
Enrolment
45 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07867535
Sponsor's protocol ID
FJUH115600
Acronym
Effects of Hig
Status last verified
Oct 2026
First submitted
5 Oct 2026
Last updated
9 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Chao KY, Liu WL, Hsu HW, Chen HC, Lim AY, Wang JS. Eccentric cycling for chronic respiratory disease: Does helmet ventilation add value? A randomized controlled trial. Chron Respir Dis. 2025 Jan-Dec;22:14799731251404870. doi: 10.1177/14799731251404870. Epub 2025 Nov 25.

    PubMed 41290215
  • Inostroza M, Valdes O, Tapia G, Nunez O, Kompen MJ, Nosaka K, Penailillo L. Effects of eccentric vs concentric cycling training on patients with moderate COPD. Eur J Appl Physiol. 2022 Feb;122(2):489-502. doi: 10.1007/s00421-021-04850-x. Epub 2021 Nov 20.

    PubMed 34799753
  • Milanovic Z, Sporis G, Weston M. Effectiveness of High-Intensity Interval Training (HIT) and Continuous Endurance Training for VO2max Improvements: A Systematic Review and Meta-Analysis of Controlled Trials. Sports Med. 2015 Oct;45(10):1469-81. doi: 10.1007/s40279-015-0365-0.

    PubMed 26243014
  • Harrison AJ, Burdon CA, Groeller H, Peoples GE. The Acute Physiological Responses of Eccentric Cycling During the Recovery Periods of a High Intensity Concentric Cycling Interval Session. Front Physiol. 2020 Apr 17;11:336. doi: 10.3389/fphys.2020.00336. eCollection 2020.

    PubMed 32362839
  • Pancera S, Lopomo NF, Porta R, Sanniti A, Buraschi R, Bianchi LNC. Effects of Combined Endurance and Resistance Eccentric Training on Muscle Function and Functional Performance in Patients With Chronic Obstructive Pulmonary Disease: Randomized Controlled Trial. Arch Phys Med Rehabil. 2024 Mar;105(3):470-479. doi: 10.1016/j.apmr.2023.09.004. Epub 2023 Sep 15.

    PubMed 37716519

Questions about this trial

What is this clinical trial studying?

A study testing Alternating Concentric-Eccentric High-Intensity Interval Training and Concentric High-Intensity Interval Training in people with Chronic Respiratory Disease and Chronic Obstructive Pulmonary Disease, run by Fu Jen Catholic University Hospital at 1 site in Taiwan.

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 2 inclusion and 3 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: opening soon, as of the sponsor's last update on 9 Oct 2026. 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 Taiwan. 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?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Hui-Wen Hsu, M.S. (+886-2-8512-8888 ext. 23426, 76wwocat@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in 6-Minute Walk Distance (time frame: Baseline and 12 weeks). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07867535, which also lists 5 linked publications.

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 9 Oct 2026.

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