Gyrocardiography- A New Non-invasive Cardiac Measurement Method to Measure Exercise Capacity and Cardiorespiratory Fitness
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 102
- Locations
- 1
- Primary Endpoint
- The maximum (max) rate (V) of oxygen (O₂) your body is able to use during exercise.
Study Overview
Brief Summary
The goal of this study is to produce a solution to measure the cardiorespiratory fitness (CRF), which can be used by commercially available smartphones without extra equipment, add-ons and special know-how.
This observational study with follow-up is to test the feasibility of a new non-invasive cardiac measurement method (gyrocardiography, GCG) in detecting hemodynamic parameters to measure exercise capacity and cardiorespiratory fitness in healthy subjects.
The objective is to produce a solution which can be used to measure the exercise capacity and cardiorespiratory fitness (CRF) of the exercisers, keep-fit athletes and professional athletes using hemodynamic parameters such as:
- Heart rate and Heart rate variability
- Cardiac Strength profile
- Systolic and diastolic phase
- Breathing frequency
- VO2max
Participants are either athletes or non-athletic persons. The athletes will perform spiroergometry and non-athletic persons ergometry to measure the CRF expressed as VO2max.
Following parameters will be measured during the (spiro)ergometry:
- Maximum workload (W)
- VO2max (ml/kg/min)
- HRmax
- Blood lactate
- Respiratory exchange ratio RER (VO2/VCO2)
The GCG measurements for acquiring the hemodynamic parameters are performed before and after the (spiro)ergometry using smartphone. During a 1- minute GCG measurement, the smart phone is placed on the chest in the middle of the sternum.
Study Design
- Study Type
- Observational
- Observational Model
- Case Only
- Time Perspective
- Prospective
Eligibility Criteria
- Ages
- 18 Years to 65 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Age: 18-65 years
- •No diagnosed cardiovascular diseases (mild hypertension or hypercholesterolemia are still allowed)
- •No medication affecting heart rate (i.e. Beta blocker)
- •Signed informed consent
- •Follow-up visit:
- •Belong to non-athletic group
- •Intention to change physical activity habits
- •Willing to participate to the follow-up visit
Exclusion Criteria
- •Not meeting inclusion criteria
- •Declined to participate
- •Resting RR before the ergometry > 180/110mmHg
Outcomes
Primary Outcomes
The maximum (max) rate (V) of oxygen (O₂) your body is able to use during exercise.
Time Frame: 4 minutes
Gyrocardiography measurement
Time Frame: 3 minutes
Lasts 1 minute and is performed 3 minutes after the (spiro)ergometry.
Secondary Outcomes
- Systolic and diastolic phase (blood pressure RR)(1 minute)
- Respiration rate per minute(3 minutes)
- Heart rate per minute and Heart rate variability(3 minutes)
- Cardiac Strength profile(3 minutes)