Changes In Resting Blood Pressure Research Articles

Isometric Exercise and Blood Pressure: 12 Weeks of Training and Detraining in the Elderly

ABSTRACTBackgroundElderly people are particularly affected by rising systolic blood pressure (SBP). We hypothesized that resting blood pressure (RBP)-reducing isometric exercise training (IET) can be delivered in a group setting with older adults.MethodsParticipants (63–88 years; N = 19) completed IET at 30% maximum voluntary contraction, 3 days a week for 12 weeks. RBP was measured weekly throughout, plus 6 weeks posttraining. Control participants did not engage in IET (N = 5). Changes in RBP were assessed using a 2-way repeated-measures analysis of variance.ResultsIET induced significant reductions in SBP (−10.5 mmHg; P < 0.05), but SBP also declined unexpectedly in the control group (−4.5 mmHg; P < 0.05). Diastolic blood pressure declined in the IET group only (−4.7 mmHg; P < 0.05). There were no significant differences between groups for SBP or diastolic blood pressure (P > 0.05). At 6 weeks posttraining, SBP was still 9.4 mmHg below baseline in the IET group only. A unique finding was that the clinically significant RBP reductions persisted for 6 weeks after IET.ConclusionsHandgrip IET may be an effective antihypertensive intervention, which persists for several weeks in older adults, even when training ceases.

Effects of Differences in Exercise Programs With Regular Resistance Training on Resting Blood Pressure in Hypertensive Adults: A Systematic Review and Meta-Analysis.

Igarashi, Y. Effects of differences in exercise programs with regular resistance training on resting blood pressure in hypertensive adults: A systematic review and meta-analysis. J Strength Cond Res 37(1): 253-263, 2023-This systematic review and meta-analysis aimed to evaluate changes in resting blood pressure (RBP) with differences in regular resistance training (RT) programs. Inclusion criteria were randomized controlled trials involving hypertensive adults and interventions involving only RT of both the upper and lower limbs for ≥7 weeks. The weighted mean difference (WMD) was defined as the mean difference between the exercise and control groups, weighted by the inverse of the squared standard error for each study, and all WMDs in RBP were pooled as overall effects. A simple meta-regression analysis was performed to evaluate the relationship between RT variables (percentage 1 repetition maximum [1RM], number of repetitions, number of sets, and weekly frequency) and changes in RBP. Seventeen studies (646 subjects) were analyzed. The pooled WMDs in the resting systolic blood pressure (RSBP) and resting diastolic blood pressure (RDBP) decreased significantly but contained significant heterogeneity {RSBP, -4.7 mm Hg (95% confidence interval [CI], -6.7 to -2.8; I2 = 46.6%); RDBP, -3.5 mm Hg (95% CI, -4.9 to -2.1; I2 = 39.1%)}. Meta-regression analysis revealed that an increase in % 1RM was significantly associated with a decrease in the RSBP (γ = -0.25x 0 + 10.85, where γ represents the mean difference in RSBP, and x 0 represents % 1RM [%]), and heterogeneity was alleviated ( I2 = 0.0%). For reducing RSBP, regular RT with moderate or heavy loads may be more beneficial than regular RT with light loads.

The form of exercise to decrease resting blood pressure in older adults: A systematic review and meta-analysis

Background/objectivesThe current systematic review and meta-analysis evaluated the relationship between the form of exercise and changes in resting blood pressure (RBP) in older adults and the overall level of evidence. MethodsThe inclusion criteria were studies involving intervention with only regular exercise limited to subjects ≥65 years old. The combined changes in RBP in each study were calculated and the relationship between the form of exercise and changes in the RBP were evaluated. The overall evidence was assessed using the GRADE approach. ResultsNineteen studies (1081 subjects) were analyzed. The combined changes in the RBP decreased as a result of aerobic exercise or resistance exercise. The intensity of resistance exercise (METs) was related to the change in the RBP of systolic (meta-regression coefficient, –2.5 [95% confidence interval, –4.7 to –0.4]; R2=35.4%). When excluding studies with high overall risk of bias, the overall duration of aerobic exercise (weeks) was related to the change in the RBP of systolic (meta-regression coefficient, –0.6 [95% confidence interval, –1.0 to –0.2]; R2=93.2%). In addition, there was a low level of evidence overall for a decrease in RBP as a result of aerobic exercise, but there was a moderate level of evidence for a decrease in RBP as a results of resistance exercise. ConclusionA decrease in the RBP of systolic may be associated with active exercise in older adults. However, there may be insufficient evidence for the decrease in RBP as a result of aerobic exercise.