Cardiovascular Health and Swimmers vs. Non-Swimmers

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Updated on 24 March 2026
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Summary


Overview of the Study:

  • Study Type: Observational
  • Observational Model: Cohort
  • Time Perspective: Prospective
  • Estimated Enrollment: 100 participants
  • Study Start Date: August 25, 2025


Clinic Visit Schedule:

 

  • Visit 1 (Baseline): Consent, health history, physical exam, blood tests, VO₂ max, wearable issued
  • Visit 2 (Month 2): BP, BMI, waist circumference, wearable data review
  • Visit 3 (Month 4): BP, BMI, waist circumference, wearable data review
  • Visit 4 (Month 6): BP, BMI, waist circumference
  • Visit 5 (Month 8): BP, BMI, waist circumference, wearable data review
  • Visit 6 (Month 10): BP, BMI, waist circumference, wearable data review
  • Visit 7 (Month 12): BP, lipid profile, VO₂ max, metabolic syndrome assessment
  • Visit 8 (Month 15): Final review, wearable return

 





 

Collaborators and Investigators:

  • Sponsor: Dummy
  • Principal Investigator: Dummy

Study Record Dates:

  • Record Created: August 25, 2025
  • Study Start Date: August 25, 2025
  • Estimated Completion: November 25, 2026

 

Description

Detailed Description:

Numerous individuals acknowledge that swimming is a full-body, low-impact exercise that is good for their cardiovascular systems and musculoskeletal systems. Swimming offers significant aerobic and resistance training upsides while decreasing joint stress compared to many land-based workouts. It has been proven that swimming, along with other forms of regular exercise, lowers the risk of obesity, cardiovascular disease, and high blood pressure.

The cardiovascular health outcomes of two groups—swimmers and non-swimmers—will be compared in this 15-month prospective observational cohort study. Numerous health metrics, including resting blood pressure, VO₂ max, lipid profile, BMI, and incidence of metabolic syndrome, will be monitored during the study. Self-reported surveys, clinical evaluations, medical records, and wearable fitness equipment will all be used to gather data. To determine the long-term effects of swimming on heart health, both absolute values and longitudinal trends will be examined.


Official Title:

Comparative Cardiovascular Health Outcomes in Adult Swimmers vs Non-Swimmers: An Observational Study

Conditions:
Cardiovascular Health, Hypertension, Exercise Physiology, Sedentary Lifestyle

Intervention / Treatment:
No intervention. Observational only. Participants will continue their usual routines

Study Plan:
This 15-month prospective observational study will follow two cohorts—swimmers and non-swimmers—to compare key cardiovascular health indicators. Each participant will undergo evaluations every 2 months. Clinical assessments will be conducted at baseline, 6 months, and 12 months. Wearable fitness devices will continuously monitor certain parameters. Participants will maintain their usual activity patterns throughout the study.


What Participants Will Do

1. Attend the clinic visits every 2 months.
2. Wear a fitness tracker continuously throughout the study.
3. Complete short monthly questionnaires on lifestyle and health.
4. Undergo blood tests and VO₂ max testing at designated time points

Measurements and Collection Methods:

 

Metric

Collection Method

Frequency

Where/How

Resting Blood Pressure

Measured by clinician

Every 2 months

Clinic visit with automated BP cuff

Lipid Profile

Fasting blood test

Baseline, 12 months

Clinic (venous blood sample)

VO₂ Max

Graded exercise test

Baseline, 12 months

Treadmill/cycle ergometer in clinic

Resting Heart Rate

Wearable device

Continuous, weekly avg

Synced from fitness tracker

BMI

Weight and height

Every 2 months

Clinic (weight at each visit, height at baseline)

Waist Circumference

Tape measurement

Every 2 months

Measured by staff at iliac crest

Metabolic Syndrome

Derived from clinical data

Baseline, 12 months

Assessed by study team


Clinic Visit Schedule:

 

  • Visit 1 (Baseline): Consent, health history, physical exam, blood tests, VO₂ max, wearable issued
  • Visit 2 (Month 2): BP, BMI, waist circumference, wearable data review
  • Visit 3 (Month 4): BP, BMI, waist circumference, wearable data review
  • Visit 4 (Month 6): BP, BMI, waist circumference
  • Visit 5 (Month 8): BP, BMI, waist circumference, wearable data review
  • Visit 6 (Month 10): BP, BMI, waist circumference, wearable data review
  • Visit 7 (Month 12): BP, lipid profile, VO₂ max, metabolic syndrome assessment
  • Visit 8 (Month 15): Final review, wearable return

Wearable Use:

Participants will be provided with a wearable device to monitor resting heart rate continuously. Data will be reviewed at clinic visits and analysed to track cardiovascular trends over time. Participants will be instructed to sync their devices weekly.
analysed

Monthly Questionnaires:
Participants will complete brief online surveys (~5 minutes) each month, covering medication changes, physical activity levels, sleep patterns, and any health or lifestyle changes.

Data Handling and Ethics:

All collected data will be de-identified and securely stored. Participants may withdraw at any time. Informed consent will be obtained during the baseline visit.

More Information:

  • IPD Sharing: Yes
  • IPD Description: Deidentified participant data available post-publication upon request
  • Access Criteria: Requires data use agreement and ethics approval
  • Sharing Timeline: Within 6-12 months after primary completion

Details
Condition Cardiovascular Health,Hypertension,Exercise Physiology,Sedentary Lifestyle
Age 20years - 65years
Clinical Study IdentifierTX16827
Last Modified on24 March 2026

Eligibility

 Yes No Not Sure

Inclusion Criteria

Adults between the ages of 20 and 65
BMI between 18.5 and 35 kg/m²
Swimmers
Swim at least 3 times per week
Each swim session lasts a minimum of 30 minutes
Swimming must be continuous or aerobic in nature (e.g., laps or interval sets)
Non-swimmers
Swim no more than once per month
Total swimming time not exceeding 30 minutes per month
Mild or controlled hypertension is acceptable
​​Systolic BP ≤ 140 mmHg
Diastolic BP ≤ 90 mmHg
May be on stable antihypertensive medication for at least 3 months

Exclusion Criteria

Known cardiovascular conditions (such as MI or stroke) and uncontrolled hypertension (SBP > 160 or DBP > 100) are excluded
Diabetes mellitus
Chronic renal and pulmonary conditions
Women who are expecting
Participating in both vigorous non-aquatic exercise/gym-based or ground-based exercise and swimming
Clear my responses
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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