This study aims to validate the use of the Ventriject product to estimate VO2 max, through a non-physically active test using ECG, echoseismography and echosonography.

this study will be composed of the following tests:

• blood sample for measurement of blood values
• blood pressure measurement to rule out risks affiliated with maximal effort testing
• DXA body composition scanning
• Measurement on ECG, echosonography and echoseismography with accelerometer, microphone and ECG wires
• Measurements with phone (iPhone)
• VO2 max assessment by maximal oxygen uptake testing on a training bike, using online oxygenmeasurement equipment
• Hand-grip strength assessment

Inclusion Criteria:

- healthy adults between 18 and 45 years of age

Exclusion Criteria:

• current or previous cardiovascular disease
• chronic use of medicine
• pregnancy
• illnesses which prohibits the testing of maximal oxygen uptake

50/50 gender composition, meaning uptake of participants of a gender will end when the group reaches 50 participants

healthy adults

Sharing of IPD is possible if the following terms are met:

1. Identification of the study participant is in no way achieveable from the requested data
2. The participant declares interest in their data being shared through IPD