[PP.15.04] GENDER AND EXERCISE-MODE DIFFERENCES IN POST EXERCISE BLOOD PRESSURE AND HEART RATE VARIABILITY RESPONSES DURING WORKDAY. (September 2017)

• Record Type: Journal Article
• Authors: Puga, G.; Mariano, I.; Domingos, D.; Ribeiro, A.L.; Peçanha, T.; Simões, H.
• Is Part Of: Journal of hypertension. Volume 35(2017)Supplement 2
• Publication Date: 2017-09
• Subjects: Hypertension -- Periodicals; Hypertension -- Periodicals; 616.132005
• DOI: 10.1097/01.hjh.0000523585.55971.4b
• Languages: English
• ISSNs: 1473-5598

Abstract

Abstract : Objective: The present study compared the acute effects of exercise mode and gender on subsequent blood pressure (BP) and heart rate variability (HRV) responses during daily work. Design and method: 20 healthy adults, public servants (9W and 11 M), randomly underwent three experimental sessions in early morning prior to their work routine: RE- circuit resistance session at 40% of 1RM, AE- treadmill exercise at 60–70% of heart rate (HR) reserve and CON- resting control session. HR and BP were evaluated before and during the 1st hour of post-intervention period, as well as in the workplace at 11:30 AM, 2:00 PM and 5:00 PM. Results: The Area under the curve of the 9-hour of systolic (SBP) and diastolic BP (DBP) measurements revealed that the greatest BP reduction in men was after RE (Men: RE-DBP = −983 mmHg.540 min; RE-SBP = −1564 mmHg.540 min; AE-DBP = −175 mmHg.540 min; AE-SBP = 241 mmHg.540 min) and women after AE (Women: RE-DBP = 2712 mmHg.540 min; RE-SBP = 1399 mmHg.540 min; AE-DBP = 892 mmHg.540 min; AE-SBP = 620 mmHg.540 min). HRV analysis showed higher variations (reductions in RMSSD, pNN50, SDNN and HF, and increases in LF) after resistance exercise in both genders. Conclusions: Acute resistance exercise reduced BP during nine hours of daily work in healthy men but not in women, and can promote high autonomic stress in both genders. Moreover, moderate-intensity aerobic exercise reduces DBP during work journey only in men and decreases SBP of women only during the first hour, with lower autonomic stress in both genders than resistance exercise.