NCT04688177

Brief Summary

Background and purpose: Cigarette smoking would post threats to physical health. Even though studies suggested that long-term cigarette smoking would lead to cardiovascular diseases, pulmonary diseases, or even cancer development, the smoking population all around the world was still common. Before progressing into the disease stage, cigarette smokers might have presented decreasing exercise capacity, skeletal muscle function, and cardiac autonomic function as early signs of physiological function decline. The purposes of this study are (1) to investigate the difference in exercise capacity, skeletal muscle function, and cardiac autonomic function between smokers and never smokers, and (2) to test the hypothesis that cigarette smoking is an independent factor associated with exercise capacity. Methods: This is a cross-sectional observational study. This study will invite 150 participants from community in Taipei City. The body composition will be analyzed by bioelectrical impedance analysis, and resting heart rate variability will be evaluated by the heart rate variability monitor. Besides, grip strength, exhale carbon monoxide concentration, pulmonary function test, respiratory muscle performance will be measured. Moreover, subject will have to fill up the Fagerström Test for Nicotine Dependence and Seven-Day Physical Activity Recall Questionnaire. Last will be the cardiopulmonary exercise testing. Statistical analyses will be performed by statistical software for social sciences (SPSS) statistical package v.21.0 for Windows. (IBM SPSS Statistics for Windows, Version 21.0. Armonk, NY: IBM Corp.) Between-group comparisons of exercise capacity, skeletal muscle function and heart rate variability parameters will be performed using independent Student's t-test. Pearson's correlation coefficient will be used to test the correlations between outcome parameters. Stepwise regression analysis will be used to examine the independent association between smoking and exercise capacity after controlling for confounders. The α level will be set at 0.05. The results of this study would provide the early effects of cigarette smoking on physical function, and highlight the importance of early detection and intervention.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
52

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Dec 2020

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 3, 2020

Completed
11 days until next milestone

First Submitted

Initial submission to the registry

December 14, 2020

Completed
15 days until next milestone

First Posted

Study publicly available on registry

December 29, 2020

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 29, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 29, 2021

Completed
Last Updated

January 24, 2022

Status Verified

December 1, 2020

Enrollment Period

5 months

First QC Date

December 14, 2020

Last Update Submit

January 21, 2022

Conditions

Keywords

cigarette smokingexercise capacityskeletal muscle functionheart rate variability

Outcome Measures

Primary Outcomes (1)

  • Maximal oxygen uptake

    Maximal oxygen uptake, VO2max (ml/kg/min), as an indicator of exercise capacity. Cardiopulmonary exercise testing will be used to evaluate the maximal exercise capacity by a computer-controlled breath-by-breath metabolic measurement system (Carefusion Corporation, Yorba Linda, CA, USA) base on the treadmill. Bruce protocol, which is a graded treadmill evaluation protocol will be adopted.

    After finishing all the other measurement. The measurement will be lasted 15 minutes.

Secondary Outcomes (10)

  • Skeletal muscle function

    After finishing heart rate variability and body composition measurement. The measurement will be lasted 5 minutes.

  • Cardiac autonomic function

    After body composition measurement. The measurement will be lasted 20 minutes.

  • Skeletal muscle mass

    After collecting basic data of subjects. The measurement will be lasted 5-10 minutes.

  • Exhale carbon monoxide concentration

    After finishing heart rate variability and body composition measurement. The measurement will be lasted 1-3 minutes.

  • Forced expiratory volume in one second

    The pulmonary function measurement will be lasted 15 minutes.

  • +5 more secondary outcomes

Study Arms (2)

smokers

cigarette smokers male 20 ≤ age ≤ 45 years old female 20 ≤ age ≤ 55 years old

Device: Body CompositionDevice: Heart rate variabilityDevice: Grip StrengthDevice: Exhale Carbon Monoxide ConcentrationDevice: Pulmonary Function TestDevice: Respiratory Muscle FunctionBehavioral: Fagerström Test for Nicotine DependenceBehavioral: Seven-Day Physical Activity Recall QuestionnaireDevice: Cardiopulmonary exercise testing

never smokers

age and gender-matched non-smokers

Device: Body CompositionDevice: Heart rate variabilityDevice: Grip StrengthDevice: Exhale Carbon Monoxide ConcentrationDevice: Pulmonary Function TestDevice: Respiratory Muscle FunctionBehavioral: Fagerström Test for Nicotine DependenceBehavioral: Seven-Day Physical Activity Recall QuestionnaireDevice: Cardiopulmonary exercise testing

Interventions

The subjects should lie in the supine position on a non-conducting surface for 5 min. 4 surface electrodes with cables will be attached to the right hand and ankle of subjects.

never smokerssmokers

After supine quietly for 20 min, a lead I electrocardiogram will be taken for 5 min.

never smokerssmokers

The participants will squeeze the hand dynamometer as hard as possible with the dominant hand. 3 successive measurements will be taken.

never smokerssmokers

Subjects in sitting position, performing 1 inspiration, then exhale to carbon monoxide meter.

never smokerssmokers

Subjects should be in a sitting position with a nose clip, then perform pulmonary function test. Participants should perform at least 3 acceptable attempts, but no more than 8 attempts in total.

never smokerssmokers

Subject will perform both maximal inspiratory pressure and maximal expiratory pressure for 3 times in sitting position with the nose clip.

never smokerssmokers

Fagerström Test for Nicotine Dependence Traditional Chinese version will be adopted. It is a 6-item questionnaire that could help quantify the smoking frequency, amounts, and level of dependence.

never smokerssmokers

Physical activity will be measured by the Chinese Version of the Seven-Day Physical Activity Recall Questionnaire. Participants will need to recall the time (hours) they spent in various leisure activities in the past 7 days.

never smokerssmokers

Bruce protocol as the treadmill evaluation protocol will be adopted for cardiopulmonary exercise testing.

never smokerssmokers

Eligibility Criteria

Age20 Years - 55 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodProbability Sample
Study Population

Subjects will be invited from community in Taipei City

You may qualify if:

  • male 20 ≤ age ≤ 45 years old
  • female 20 ≤ age ≤ 55 years old
  • age and gender-matched non-smokers

You may not qualify if:

  • uncontrolled cardiovascular diseases, neurological diseases, musculoskeletal system problems, or systemic diseases that contraindicate the exercise
  • women in pregnancy or menopausal women
  • any ongoing medication that has a documented effect on the autonomic nervous system (e.g., tricyclic anti-depressants)
  • has been diagnosed with autonomic nervous system disorders

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

National Taiwan University, College of Medicine, Department of Physical Therapy

Taipei, Zhongzheng, 100, Taiwan

Location

Related Publications (57)

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Related Links

MeSH Terms

Conditions

Cigarette Smoking

Interventions

Hand StrengthRespiratory Function TestsExercise Test

Condition Hierarchy (Ancestors)

Tobacco SmokingSmokingBehaviorTobacco Use

Intervention Hierarchy (Ancestors)

Muscle StrengthPhysical ExaminationDiagnostic Techniques and ProceduresDiagnosisMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological PhenomenaDiagnostic Techniques, Respiratory SystemHeart Function TestsDiagnostic Techniques, CardiovascularErgometryInvestigative Techniques

Study Design

Study Type
observational
Observational Model
OTHER
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 14, 2020

First Posted

December 29, 2020

Study Start

December 3, 2020

Primary Completion

April 29, 2021

Study Completion

April 29, 2021

Last Updated

January 24, 2022

Record last verified: 2020-12

Locations