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Exercise Systolic Blood Pressure Response During Cycle Ergometry is Associated with Future Hypertension in Normotensive Individuals.
European Journal of Preventive Cardiology 2024 January 11
AIMS: We aimed to investigate the association between the exercise systolic blood pressure (SBP) response and future hypertension (HTN) in normotensive individuals referred for cycle ergometry, with special regard to reference exercise SBP values, and exercise capacity.
METHODS: In this longitudinal cohort study, data from 14,428 exercise tests were cross-linked with Swedish national registries on diagnoses and medications. We excluded individuals with a baseline diagnosis of cardiovascular disease or HTN. The peak exercise SBP (SBPpeak) was recorded and compared to the upper limit of normal (ULN) derived from SBPpeak reference equations incorporating age, sex, resting SBP and exercise capacity. To evaluate the impact of exercise capacity, three SBP to work rate slopes (SBP/W-slopes), were calculated, relative to either supine or seated SBP at rest or to the first exercise SBP. Adjusted hazard ratios (HRadjusted [95% Confidence interval, CI]) for incident HTN during follow-up, in relation to SBP response metrics, were calculated.
RESULTS: We included 3,895 normotensive individuals (49±14 years, 45% females) with maximal cycle ergometer tests. During follow-up (median 7.5 years) 22% developed HTN. Higher SBPpeak and SBPpeak>ULN were associated with incident HTN (HRadjusted 1.19 [1.14-1.23] per 10 mmHg, and 1.95 [1.54-2.47], respectively). All three SBP/W-slopes were positively associated to incident HTN, particularly the SBP/W-slope calculated as supine-to-peak SBP (HRadjusted 1.25 [1.19-1.31] per 1 mmHg/10W).
CONCLUSION: Both SBPpeak>ULN based on reference values and high SBP/W-slopes were associated with incident HTN in normotensive individuals and should be considered in the evaluation of the cycle ergometry SBP response.
METHODS: In this longitudinal cohort study, data from 14,428 exercise tests were cross-linked with Swedish national registries on diagnoses and medications. We excluded individuals with a baseline diagnosis of cardiovascular disease or HTN. The peak exercise SBP (SBPpeak) was recorded and compared to the upper limit of normal (ULN) derived from SBPpeak reference equations incorporating age, sex, resting SBP and exercise capacity. To evaluate the impact of exercise capacity, three SBP to work rate slopes (SBP/W-slopes), were calculated, relative to either supine or seated SBP at rest or to the first exercise SBP. Adjusted hazard ratios (HRadjusted [95% Confidence interval, CI]) for incident HTN during follow-up, in relation to SBP response metrics, were calculated.
RESULTS: We included 3,895 normotensive individuals (49±14 years, 45% females) with maximal cycle ergometer tests. During follow-up (median 7.5 years) 22% developed HTN. Higher SBPpeak and SBPpeak>ULN were associated with incident HTN (HRadjusted 1.19 [1.14-1.23] per 10 mmHg, and 1.95 [1.54-2.47], respectively). All three SBP/W-slopes were positively associated to incident HTN, particularly the SBP/W-slope calculated as supine-to-peak SBP (HRadjusted 1.25 [1.19-1.31] per 1 mmHg/10W).
CONCLUSION: Both SBPpeak>ULN based on reference values and high SBP/W-slopes were associated with incident HTN in normotensive individuals and should be considered in the evaluation of the cycle ergometry SBP response.
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