Inter- and Intra-Individual Analysis of Post-Exercise Hypotension Following a Single Bout of High-Intensity Interval Exercise and Continuous Exercise: A Pilot Study.
Recently, post-exercise blood pressure (BP) has been considered a predictive tool to identify individuals who are responsive or not to BP reductions with exercise training (i. e., "high" and "low responders"). This study aimed to analyze the inter- and intra-individual BP responsiveness following a single bout of high-intensity interval exercise (HIIE) and continuous exercise (CE) in normotensive men (n=14; 24.5±4.2 years). Mean change in BP during the 60 min period post-exercise was analyzed and minimal detectable change (MDC) was calculated to classify the subjects as "low" (no post-exercise hypotension [PEH]) and "high responders" (PEH occurrence) following each exercise protocol (inter-individual analysis). The MDC for systolic and diastolic BP was 5.8 and 7.0 mmHg. In addition, a difference equal/higher than MDC between the exercise protocols was used to define an occurrence of intra-individual variability in BP responsiveness. There were "low" and "high" PEH responders following both exercise protocols (inter-individual variability) as well as subjects who presented higher PEH following a specific exercise protocol (intra-individual variability between exercise protocols). These results were observed mainly for systolic BP. In summary, PEH is a heterogeneous physiological phenomenon and, for some subjects, seems to be exercise-protocol dependent. Further investigations are necessary to confirm our preliminary findings.
Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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Costa
Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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Dantas
Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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de Farias Junior
Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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Frazão
Department of Physical Education, Federal University of Vale do São Francisco, Petrolina, PE, Brazil.
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Prestes
Department of Physical Education, Federal University of Vale do São Francisco, Petrolina, PE, Brazil.
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Moreira
Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
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Ritti-Dias
Health Leisure and Human Performance Research Institute, Faculty of Kinesiology and Recreation Management, University of Manitoba, Winnipeg, MB, Canada.
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Tibana
Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB, Canada.
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Duhamel
D000328:Adult; D001794:Blood Pressure; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D000072696:High-Intensity Interval Training; D006801:Humans; D008297:Male; D010865:Pilot Projects; D057774:Post-Exercise Hypotension / Q000175:diagnosis*; D055815:Young Adult