Abstract
ntroduction: High blood pressure has a high prevalence and is an important risk factor for the development of cardiovascular diseases, which mainly affect older adults (AM). As a therapeutic strategy, the exercise of manual isometric force has obtained effective results in the hypotensive response. However, there is little evidence on the physiological mechanisms responsible for post-exercise induced hypotension. Objective: To analyze the effect of the manual intensity training of ascending intensity on the kinetics of muscular oxygenation in hypertensive older adults type l. Materials and methods: A manual intensity ascending intensity training was carried out for 4 weeks, on an experimental group (GE; n: 25), contrasted with a 30% training of manual grip strength (MGS) control group (GC; n: 25). The following hemodynamic and anthropometric variables were evaluated: heart rate (HR), blood pressure (BP), muscle oxygenation, weight, height and body mass index (BMI), analyzing the changes before and after training. Results: In both groups after the intervention, systolic blood pressure (SBP) decreases significantly (GC: 123.6 ± 2.42 to 114.6 ± 2.36 and GE: 128.1 ± 1.56 to 111.4 ± 2.31) and HR (70.84 ± 1.92 to 64.08 ± 1.87 and 69.72 ± 2.01 to 64 ± 1.98) respectively. The greatest change in muscle oxygenation (MO) and perception of exertion is observed only in the GE (57.68 ± 1.34 to 64.56 ± 1.05 and 6.4 ± 0.23 to 3.64 ± 0,23). Conclution: Increasing intensity manual grip strength training is a valuable and better tolerated method in older people to decrease BP when compared to GC. Regarding the use of Moxy near infrared spectroscopy (NIRS) sensors, an additional evaluation should be carried out to determine training times and limits in MO percentages.
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