Eccentric Cycling Exercise on Mitochondrial Function of Lymphocyte

August 27, 2024 updated by: Jong-Shyan Wang, Chang Gung Memorial Hospital

Effects of Concentric and Eccentric Exercise Regimens on Bioenergetic Efficiency of Lymphocytes in Sedentary Males

Eccentric cycling exercise (ECE) features lower metabolic demand and higher improvement of muscle strength compared to traditional concentric cycling exercise (CCE). Mitochondria can regulate energy metabolism and adaptive immune quality in T lymphocytes. However, the effects of ECE on mitochondrial functions in T-lymphocytes have not yet been established.

Method: A total of 33 healthy sedentary males were randomized and divided into ECE (n=11), CCE (n=11), and control groups (n=11). These subjects progressively performed CCE or ECE from 60% to 80% maximal workload on a bicycle ergometer for 40 min/day, 5 days/week for 6 weeks. A graded exercise testing and an isokinetic strength test were conducted to evaluate cardiopulmonary fitness and muscle strength, respectively. Phenotypes and mitochondrial respiratory capacity in T lymphocyte were analyzed using flow cytometry and high-resolution respirometer, respectively.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

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Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Eccentric exercise training (EET) increases physical performance while having lower metabolic demand than concentric exercise training (CET).

Mitochondria of lymphocytes are essential for cell proliferation, death, and differentiation, and play a critical role in establishing lymphocyte phenotypes and their functions.

Whether EET influences lymphocyte bioenergetic efficiency remains unclear. The study was to investigate the effects of ECE and CCE regimens on adaptive immune functions and mitochondrial bioenergetics of T lymphocytes in sedentary males.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
33

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Taoyuan, Taiwan, 333
        • Chang Gung University

Participation Criteria

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Eligibility Criteria

Eligibility Criteria

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Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Sedentary lifestyle.
  2. Nonsmokers, nonusers of medications/vitamins.
  3. No any cardiopulmonary/hematological risks.

Exclusion Criteria:

  1. Have regular exercise habits (i.e., exercise frequency once per week, duration >20 min).
  2. Have retabolic or musculoskeletal disease.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Eccentric cycling training
Moderate to high intensity cycling training in eccentric type
Behavioral: Eccentric cycling training

Performed exercise training 5 days a week for 6 weeks on an eccentric ergometer.

Each training session: 5 min at 30% of maximal workload (Wmax) for warmed up and cold down and 30 min the main training phase.

Intensity: Firstly, set at 60% Wmax, and progressively increased 5% per week
Experimental: Concentric cycling training
Moderate to high intensity cycling training in concentric type (intensity matched the eccentric training)
Behavioral: Concentric cycling training

Performed exercise training 5 days a week for 6 weeks on an eccentric ergometer.

Each training session: 5 min at 30% of maximal workload (Wmax) for warmed up and cold down and 30 min the main training phase.

Intensity: Firstly, set at 60% Wmax, and progressively increased 5% per week
No Intervention: Control group
without receiving any exercise training

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Mitochondrial function of lymphocyte
Time Frame: 12 weeks
Evaluate bioenergetic health index (BHI) of mitochondria in lymphocyte by using a high resolution respirometer.
12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Cardiopulmonary fitness
Time Frame: 12 weeks
The graded exercise test (GXT) on a bicycle ergometer was performed. The GXT comprised 2 min of unloaded pedaling followed by a continuous increase in the work rate of 30 watt per 3-minute until exhaustion (i.e., progressive exercise to maximal O2 consumption)
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Chang Gung Memorial Hospital

Publications and helpful links

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General Publications

Study record dates

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Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 1, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 20, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 27, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 29, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 29, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 27, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2024

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 202100004A3

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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