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Cigarette SmokingNCT03735186

Exercise and Coronary Heart Disease Risk Markers in Male Smokers and Non-Smokers

A study testing Exercise in people with Cigarette Smoking and Coronary Heart Disease, run by Loughborough University at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The present study will investigate the effect of acute exercise on fasting and postprandial risk markers for coronary heart disease (CHD) in healthy male cigarette smokers and non-smokers. Participants will complete two, 2-day trials in a random crossover design separated by an interval of at least 1 week. Read more about this study

Who is it for?
Ages 20 to 45 years, men onlyHealthy volunteers can take part
What is being tested?
Exercise
Could I receive a placebo?
No, everyone receives an active treatment
How many people
24 participants
Where
1 siteUnited Kingdom
Study dates
4 Aug 2017to 2 Oct 2018
Phase
Interventional
Are there results?
None posted in the registry

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 20 to 45 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • 20- to 45-year-old healthy male smokers or non-smokers;
  • Be able to exercise continuously for 1 hour;
  • Body mass index between 18.5 and 29.9 kg/m2;
  • Weight stable for the past 3 months;
  • No known contradictions to maximal exertion exercise (e.g., recent musculoskeletal injury, congenital heart disease).
  • A regular cigarette smoker or non-smoker for the last 12 months according to the definition below;
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  • The National Health Interview Survey (NHIS) definitions will be used to identify cigarette smokers and non-smokers (Link: NHIS Adult Tobacco Use):
  • Current smokers will be defined as an adult who has smoked ≥100 cigarettes in their lifetime and who currently smokes cigarettes every day.
  • Non-smokers will be defined as an adult who has never smoked or who has smoked < 100 cigarettes in their lifetime
  • The following questions will determine the eligibility and group allocation:
  • Do you currently smoke cigarettes on a daily basis?
  • Have you smoked at least 100 cigarettes in your entire life?
  • If the person answers YES to Q1 and YES to Q2 they are eligible for the study and will be allocated to the smokers group.
  • If the person answers NO to Q1 and NO to Q2 they are eligible for the study and will be allocated to the non-smokers group.
  • Individuals answering any other combination (YES, NO or NO, YES) will not be eligible to take part in the study.

Who cannot join

  • Not meeting the criteria for a smoker or non-smoker (defined above);
  • Current E-Cigarette smoker;
  • Musculoskeletal injury that has affected normal ambulation within the last month;
  • Any muscle or bone injuries that do not allow them to walk and run on a treadmill;
  • Uncontrolled exercise-induced asthma;
  • Heart conditions;
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  • Coagulation or bleeding disorders;
  • Diabetes (metabolism will be different to non-diabetics potentially skewing the data);
  • Taking any medication that might influence fat metabolism;
  • Taking any medication that might influence blood glucose (e.g., insulin for diabetes);
  • Dieting or restrained eating behaviours;
  • Weight fluctuation greater than 3 kg in the 3 months prior to study enrolment;
  • A food allergy.

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Loughborough University

    Loughborough, Leicestershire, LE11 3TU

Other trials in United Kingdom

About this study

Official title: Acute Exercise and Coronary Heart Disease Risk Markers in Healthy Male Smokers and Non-Smokers

The present study will investigate the effect of acute exercise on fasting and postprandial risk markers for coronary heart disease (CHD) in healthy male cigarette smokers and non-smokers.

Participants will complete two, 2-day trials in a random crossover design separated by an interval of at least 1 week. On day 1, participants will rest (control) or complete 60 minute of treadmill exercise at 60% of maximum oxygen uptake (exercise). On day 2, participants will rest and consume two high fat meals (breakfast and lunch) over an 8-h period during which 13 venous blood samples and nine blood pressure measurements will be taken at pre-determined intervals.

It is hypothesised that men who smoke cigarettes will exhibit impaired fasting and postprandial metabolic risk markers compared to non-smokers, but a single bout of exercise will be equally, if not more, efficacious for improving the CHD risk factor profile in smokers than non-smokers.

Read the detailed description

Cigarette smoking is a strong and independent risk factor for CHD and is associated with impaired postprandial metabolism. Previous studies suggest that postprandial metabolism and other risk markers for CHD can be improved with acute exercise in healthy non-smokers, but less is known about responses in cigarette smokers. Therefore, the present study will compare the effect of acute exercise on fasting and postprandial risk markers for CHD in healthy male cigarette smokers and non-smokers.

A total of 12 healthy male cigarette smokers and 12 healthy male non-smokers matched for age and body mass index will be recruited. Before the main experimental trials, participants will attend the laboratory for a preliminary visit to complete screening questionnaires and to undergo familiarisation, anthropometric measurements (stature, body mass, waist and hip circumference, body fat) and exercise testing to determine maximum oxygen uptake.

Participants will complete two, 2-day (08:00-17:00) experimental trials in a randomised cross over design: control and exercise. On day 1, participants will arrive at the laboratory at 08:00 having fasted overnight and a baseline fasting venous blood sample and blood pressure measurement will be taken. A high fat breakfast and lunch meal will be consumed at 08:30 and 12:00, respectively. The control and exercise trials will be identical, except a 60 min bout of treadmill exercise at 60% of maximum oxygen uptake will be performed at 14:30 in the exercise trial.

On day 2, participants will arrive at 08:00 having fasted overnight for 10 h and will rest in the laboratory until 17:00. Participants in the smokers group will be asked to stop smoking at 08:00. A high fat breakfast and lunch will be consumed at 09:00 and 13:00, respectively. Venous blood samples from a cannula will be collected in the fasted state and at 0.25, 0.5, 1, 2, 3, 4, 4.25, 4.5, 5, 6, 7 and 8 h after the breakfast meal. Resting arterial blood pressure will be measured in the fasted state and at hourly intervals thereafter.

Being tested
Exercise
Keywords
Coronary heart disease, Exercise, Inflammation, Postprandial lipaemia, Smoking
Medical subject headings
Cigarette Smoking, Coronary Disease, Insulin Resistance, Inflammation, Motor Activity, Smoking

What participants receive

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

  • ExerciseBehavioural

    60 min treadmill exercise performed at 60% of maximum oxygen uptake.

Study groups in NCT03735186
Study groupRoleWhat they receive
ControlNo interventionParticipants will rest in the laboratory on day 1 and day 2 (08:00-17:00). A high fat breakfast and lunch will be consumed on both days at pre-determined intervals.
ExerciseExperimentalParticipants will complete 60 min of treadmill exercise on day 1 (14:30-15:30). Participants will rest in the laboratory for the remainder of day 1 and throughout day 2 (08:00-17:00). A high fat breakfast and lunch will be consumed on both days at pre-determined intervals.
Receives: Behavioral: Exercise

What is being measured

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

  1. Triacylglycerol concentration

    Total area under the plasma triacylglycerol concentration versus time curve on day 2

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 0.25, 0.5, 1, 2, 3, 4, 4.25, 4.5, 5, 6, 7, 8 hours)

Secondary outcomes (14)
  1. Glucose concentration

    Time-course of plasma glucose concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 0.25, 0.5, 1, 2, 3, 4, 4.25, 4.5, 5, 6, 7, 8 hours)

  2. Insulin concentration

    Time-course of plasma insulin concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 0.5, 1, 3, 4, 4.5, 6, 8 hours)

  3. Homeostasis model assessment of insulin resistance (HOMA-IR)

    Homeostasis model assessment of insulin resistance (HOMA-IR) on day 2 of the exercise and control trials using fasting glucose and insulin concentrations.

    Measured: Fasting (Plasma samples will be collected at 0 (fasted) hours)

  4. Non-esterified fatty acids concentration

    Time-course of plasma non-esterified fatty acid concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 0.5, 1, 3, 4, 4.5, 6, 8 hours)

  5. Total cholesterol concentration

    Circulating concentrations of plasma total cholesterol in the fasted state on day 2 of the exercise and control trials.

    Measured: Fasting (Plasma samples will be collected at 0 (fasted) hours)

  6. High-density lipoprotein cholesterol concentration

    Circulating concentrations of plasma high-density lipoprotein cholesterol in the fasted state on day 2 of the exercise and control trials.

    Measured: Fasting (Plasma samples will be collected at 0 (fasted) hours)

  7. Low-density lipoprotein cholesterol concentration

    Circulating concentrations of plasma low-density lipoprotein cholesterol in the fasted state on day 2 of the exercise and control trials.

    Measured: Fasting (Plasma samples will be collected at 0 (fasted) hours)

  8. C-reactive protein concentration

    Time-course of plasma C-reactive protein concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  9. Interleukin-6 concentration

    Time-course of plasma interleukin-6 concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  10. Interleukin-10 concentration

    Time-course of plasma interleukin-10 concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  11. Tumor necrosis factor alpha concentration

    Time-course of plasma tumor necrosis factor alpha concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  12. Peroxiredoxin-4 concentration

    Time-course of plasma peroxiredoxin-4 concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  13. Superoxide dismutase 3 concentration

    Time-course of plasma superoxide dismutase 3 concentrations on day 2 of the exercise and control trials.

    Measured: 8 hours (Plasma samples will be collected at 0 (fasted), 2, 5, 8 hours)

  14. Systolic and diastolic blood pressure

    Time-course of systolic and diastolic blood pressure on day 2 of the exercise and control trials.

    Measured: 8 hours (Blood pressure will be measured at 0 (fasted), 1, 2, 3, 4, 5, 6, 7, 8 hours)

Timeline

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

  1. First posted8 Nov 2018
  2. Study start4 Aug 2017
  3. Primary completion2 Oct 2018
  4. Study completion2 Oct 2018

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
Prevention
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
24 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03735186
Sponsor's protocol ID
R17-P055
Status last verified
Nov 2018
First submitted
30 Oct 2018
Last updated
9 Nov 2018
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Arjunan SP, Deighton K, Bishop NC, King J, Reischak-Oliveira A, Rogan A, Sedgwick M, Thackray AE, Webb D, Stensel DJ. The effect of prior walking on coronary heart disease risk markers in South Asian and European men. Eur J Appl Physiol. 2015 Dec;115(12):2641-51. doi: 10.1007/s00421-015-3269-7. Epub 2015 Oct 5.

    PubMed 26438068
  • Arjunan SP, Bishop NC, Reischak-Oliveira A, Stensel DJ. Exercise and coronary heart disease risk markers in South Asian and European men. Med Sci Sports Exerc. 2013 Jul;45(7):1261-8. doi: 10.1249/MSS.0b013e3182853ecf.

    PubMed 23470315
  • Miyashita M, Burns SF, Stensel DJ. Accumulating short bouts of brisk walking reduces postprandial plasma triacylglycerol concentrations and resting blood pressure in healthy young men. Am J Clin Nutr. 2008 Nov;88(5):1225-31. doi: 10.3945/ajcn.2008.26493.

    PubMed 18996856
  • Alotaibi TF, Thackray AE, Roberts MJ, Alanazi TM, Bishop NC, Wadley AJ, King JA, O'Donnell E, Steiner MC, Singh SJ, Stensel DJ. Acute Running and Coronary Heart Disease Risk Markers in Male Cigarette Smokers and Nonsmokers: A Randomized Crossover Trial. Med Sci Sports Exerc. 2021 May 1;53(5):1021-1032. doi: 10.1249/MSS.0000000000002560.

    PubMed 33196606

Questions about this trial

What is this clinical trial studying?

A study testing Exercise in people with Cigarette Smoking and Coronary Heart Disease, run by Loughborough University at 1 site in United Kingdom.

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 15 inclusion and 13 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: finished, as of the sponsor's last update on 9 Nov 2018. 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 United Kingdom. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Triacylglycerol concentration (time frame: 8 hours (Plasma samples will be collected at 0 (fasted), 0.25, 0.5, 1, 2, 3, 4, 4.25, 4.5, 5, 6, 7, 8 hours)). 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 NCT03735186, which also lists 4 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 Nov 2018.

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