Hemodynamic and spiroergometric parameters in hypertensive men under 30 during treadmill stress test

Abstract

Aim. To study dynamics of blood pressure (BP) and spiroergometric parameters in young males with arterial hyper8 tension (AH) during treadmill stress test. Material and methods. In total, 78 men aged 18830 years (mean age 20,4±3,9 years) were examined. According to WHO/ISH criteria (1999), essential AH was diagnosed in 42 individuals: Stage I in 35, and Stage II – in 7. Control group included 36 healthy men. All participants underwent treadmill stress test (Bruce protocol, gradually increas8 ing workload), with reaching submaximal heart rate (HR). During the test, ECG was registered, BP level and gas content of the exhaled air were measured. Results. In AH patients, no significant difference in systolic or diastolic BP (SBP, DBP) dynamics during stress test was registered, comparing to controls, despite significantly higher BP levels at rest and during the stress test. AH patients demonstrated significant increase in O2 pulse parameters, respiratory coefficient, peak CO2 production, and earlier anaerobic threshold time. Physical stress tolerance in AH patients under 30, comparing to controls, was the same. In most AH individuals (n=36, 86,7%), BP reaction type was hypertensive, with gradual BP reaction in 6 participants (14,3%). Conclusion. Stable SBP and DBP increase at all treadmill test stages, with prolonged post8test recovery, might be an important AH diagnostic sign in individuals under 30.

Keywords

• arterial hypertension
• treadmill test
• spiroergometry
• gas analysis
• cardiovascular reaction types in physical stress test