Comparison of Pulse Wave and Blood Pressure Measurements Before, During and After Ergometry in Healthy Men

ARCIM Institute Academic Research in Complementary and Integrative Medicine30 enrolled

Overview

The objective of this randomized, controlled single blind study is to compare pulse wave and blood pressure measurements before, during and after exercise ergometry in healthy male subjects.

In a randomized single-blind study design the investigators explore how well blood pressure parameters calculated using a Pulse Transit Time-based method (device: SOMNOtouchTM RESP) match blood pressure parameters measured by a classic upper arm blood pressure cuff (Mobil-O-Graph® PWA) under standardized load conditions (ergometry). In 30 healthy male subjects (age 18 - 40 years), cardiovascular parameters before, during and after a standardized load on a bicycle ergometer (half-lying position) are recorded with three different devices (Mobil-O-Graph® PWA versus SOMNOtouchTM RESP versus GeTeMed Vitaguard 3100) and compared. Primary outcome is the difference of the systolic blood pressure values between the devices Mobil-O-Graph® PWA versus SOMNOtouchTM RESP during the three phases. The Mobil-O-Graph® PWA blood pressure cuff is applied randomized to the arm with the previously determined higher or lower systolic blood pressure mean difference. The subjects are blinded to the results of the measurements during ergometry. After a pre-rest period of 12 minutes, the subjects are physically strained on the ergometer for 48 minutes (6 minutes loading phase followed by a 2-minute rest phase; 30 watts increase every 8 minutes up to a maximum load of 180 watts), followed by a 12-minute rest period. Measurements are taken every two minutes with the Mobil-O-Graph® PWA; data acquisition with the SOMNOtouchTM RESP and GeTeMed Vitaguard 3100 devices takes place continuously over a total duration of 72 minutes.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

SINGLE

Enrollment

Conditions

Healthy Male Subjects

Interventions

Ergometry HOTHER

After a pre-rest period of 12 minutes, the subjects are physically strained on the ergometer for 48 minutes (6 minutes loading phase followed by a 2-minute rest phase; 30 watts increase every 8 minutes up to a maximum load of 180 watts), followed by a 12-minute rest periodmaximum load of 180 watts), followed by a 15-minute post-rest period. Mobil-O-Graph PWA blood pressure cuff is applied to the upper arm with the previously determined higher systolic blood pressure (reference parameter). SOMNOtouchTM RESP and GeTeMed Vitaguard 3100 are accordingly applied to the arm with the previously determined lower systolic blood pressure.

Ergometry LOTHER

After a pre-rest period of 12 minutes, the subjects are physically strained on the ergometer for 48 minutes (6 minutes loading phase followed by a 2-minute rest phase; 30 watts increase every 8 minutes up to a maximum load of 180 watts), followed by a 12-minute rest periodmaximum load of 180 watts), followed by a 15-minute post-rest period. Mobil-O-Graph PWA blood pressure cuff is applied to the upper arm with the previously determined lower systolic blood pressure (reference parameter). SOMNOtouchTM RESP and GeTeMed Vitaguard 3100 are accordingly applied to the arm with the previously determined higher systolic blood pressure.

Eligibility

Sex: MALEMin age: 18 YearsMax age: 40 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Signed informed consent * Healthy at the time of the examinations * Inconspicuous anamnesis regarding cardiovascular diseases and bronchial asthma * resting heart rate 50 to 100 beats per minute * Normal blood pressure or appropriately treated and controlled hypertension (systolic blood pressure ≤ 140 mmHg and diastolic blood pressure ≤ 90 mmHg) Exclusion Criteria: * Acute or chronic (especially cardiovascular) diseases, including cardiac arrhythmia and vegetative regulatory disorders (recorded via anamnesis) * Taking allopathic medication: digitalis, beta blockers, antiarrhythmics * Bronchial asthma (recorded by anamnesis) * Alcohol abuse * Heart diseases NYHA class IV * Blood pressure side difference ≥ 10mmHg * Fever (\> 37,5°C)

Locations (1)

ARCIM Institute

Filderstadt, Baden-Wurttemberg, Germany

Outcomes

Primary Outcomes

Difference of the systolic blood pressure

Primary outcome is the difference of the systolic blood pressure values between the devices Mobil-O-Graph® PWA versus SOMNOtouchTM RESP during the three phases