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  • Title: Using the immediate blood pressure benefits of exercise to improve exercise adherence among adults with hypertension: a randomized clinical trial.
    Author: Zaleski AL, Taylor BA, Park CL, Santos LP, Panza G, Kramarz M, McCormick K, Thompson PD, Fernandez AB, Chen MH, Blissmer B, Gans KM, Pescatello LS.
    Journal: J Hypertens; 2019 Sep; 37(9):1877-1888. PubMed ID: 31058797.
    Abstract:
    BACKGROUND: A single exercise session evokes immediate blood pressure (BP) reductions that persist for at least 24 h, termed postexercise hypotension (PEH). Self-monitoring of PEH may foster positive outcome expectations of exercise, and thus, enhance exercise adherence among adults with hypertension. PURPOSE: To compare the efficacy of self-monitoring of exercise (EXERCISE) versus exercise and PEH (EXERCISE + PEH) to improve exercise adherence and BP control among adults with hypertension. METHODS: Adults with high BP were randomized to EXERCISE (n = 12) or EXERCISE + PEH (n = 12). Participants underwent supervised, moderate intensity aerobic exercise training for 40-50 min/session, 3 days/week for 12 weeks and encouraged to exercise unsupervised at home at least 30 min/day, 1-2 days/week. EXERCISE + PEH also self-monitored BP before and after exercise. Adherence was calculated as [(no. of exercise sessions performed/no. of possible exercise sessions) × 100%]. BP was measured pre and posttraining. RESULTS: Healthy, middle-aged (52.3 ± 10.8 years) men (n = 11) and women (n = 13) with hypertension (136.2 ± 10.7/85.2 ± 8.9 mmHg) completed exercise training with 87.9 ± 12.1% adherence. EXERCISE + PEH demonstrated greater adherence to supervised training (94.3 ± 6.6%) than EXERCISE (81.6 ± 13.2%; P = 0.007). EXERCISE + PEH performed 32.6 ± 22.5 min/week more unsupervised home exercise than EXERCISE (P = 0.004), resulting in greater exercise adherence (107.3 ± 18.7%) than EXERCISE (82.7 ± 12.2%; P = 0.002). Post versus pretraining BP was reduced -7.4 ± 11.3/-4.9 ± 9.9 mmHg (P < 0.025) with no statistical difference between EXERCISE (-5.2 ± 13.3/-3.6 ± 6.1 mmHg) and EXERCISE + PEH (-9.9 ± 11.3/-6.1 ± 6.9 mmHg; P > 0.344). CONCLUSION: The current study is the first to demonstrate that PEH self-monitoring is an efficacious tool to improve exercise adherence among a small sample of adults with hypertension. Future research among a larger, more diverse sample is needed to confirm these novel findings and determine whether EXERCISE + PEH translates to better BP control relative to EXERCISE self-monitoring alone.
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