Efeito da ingestão hídrica sobre a recuperação cardiovascular pós-exercício

Abstract

-Physical exercise elicits an increase in heart rate (HR), blood pressure (BP) and, consequently, in the rate-pressure product (RPP). Recovery of HR immediately after exercise indicates cardiovascular health. Blood pressure also decreases after exercise, occasionally reaching values lower than pre-exercise levels (postexercise hypotension). Studies have shown a positive effect of water intake on HR recovery after exercise. However, little is known about the effect of water intake on postexercise BP and RPP responses. The objective of this study was to evaluate the effects of water intake on postexercise cardiac work assessed by HR, BP and RPP. Fourteen healthy volunteers (22 ± 1.4 years) participated in the study. The experimental session consisted of HR, systolic (SBP) and diastolic BP (DBP) recording at rest, followed by submaximal exercise on a cycle ergometer. Next, the subjects consumed water and the cardiovascular variables were recorded during recovery. In addition, a control session without postexercise water intake was performed. The RPP was calculated from the product of HR and SBP. Water intake prevented a postexercise hypotensive effect on DBP, but accelerated postexercise HR and RPP reduction during recovery when compared to the control session. It was concluded that water intake is an effective strategy to reduce postexercise cardiac work. Key words: Exercise; Heart rate; Postexercise hypotension; Water intake Resumo -O exercício físico promove a elevação da frequência cardíaca (FC), pressão arterial (PA) e, por consequência, do duplo produto (DP). Imediatamente após o término do exercício, há a recuperação da FC; resposta que indica boa saúde cardiovascular. A PA também apresenta queda pós-exercício, atingindo, eventualmente, valores abaixo do repouso (hipotensão pós-exercício; HPE). Estudos têm demonstrado efeito positivo da ingestão hídrica (IH

Efeitos do exercício de força versus combinado sobre a hipotensão pós-exercício em mulheres com síndrome metabólica

“…A single measurement was made at 15, 30, 45 and 60min. Water intake was not allowed during the monitoring period 27 .…”

Influence of Fluid Ingestion on Heart Rate, Cardiac Autonomic Modulation and Blood Pressure in Response to Physical Exercise: A Systematic Review with Meta-Analysis and Meta-Regression

“…Thirty-three studies were included in the quantitative synthesis (meta-analysis). Amongst them, 24 studies assessed HR during exercise [22][23][24][26][27][28][29]34,35,38,40,42,43,[45][46][47][48][50][51][52][54][55][56][57], 11 studies analyzed HRV recovery [28,[31][32][33][34]36,39,40,51,53,54] and 7 analyzed SBP and DBP throughout recovery [26,30,31,37,41,52,55]. The search process and selection step details are established in the PRISMA protocol flow diagram (Figure 1).…”

“…The majority of the judged studies were undertaken with physically active individuals. Only four articles required physically inactive individuals [24,26,30,41]. The majority of studies were concerned with maintaining tests completed at the same time of day to standardize circadian influences.…”

“…The majority of studies were concerned with maintaining tests completed at the same time of day to standardize circadian influences. Some studies described the specified time of day throughout the morning [29,34,39,[43][44][45] or afternoon [26,30,33,36,37,40,51,52,54,55].…”

“…The studies kept standardization of the instructions prior to the test, recommending them to refrain from alcoholic beverages or caffeine [22,23,25,27,28,30,31,33,34,36,37,[39][40][41]46,49,[52][53][54][55][56] and not undertake any physical exercise at least 24 hours before the tests or adopt a usual exercise regimen [22][23][24][25]27,28,[30][31][32][33][34][35][36][37]40,41,43,44,46,[48][49][50][51][52][53][54][55][56]…”