Acute Vascular Responses Following a Single Bout of Handgrip Resistance
Author
Capener-Jones, Liam
Date
2013Type
Dissertation
Publisher
Cardiff Metropolitan University
Metadata
Show full item recordAbstract
Purpose: The aim of the present study was to investigate the acute vascular
responses to a single bout of handgrip resistance exercise (RE). Methods: 9
physically active male students volunteered who had not previously engaged in
chronic weight training. The average physical characteristics were, age (20.4 ± 1.1
years); height (1.78 ± 0.1 cm); weight (79.3 ± 9.2 kg) and body mass index (BMI)
(24.9 ± 2.5). Each subject completed a handgrip RE for 5 mins at 10% of their 1
repetition maximum (1RM) with flow mediated dilation (FMD) being carried out pre
and post handgrip RE intervention. Vascular measures of base mean diameter
(BMD), response mean diameter (RMD), delta diameter (DD), delta % (DP), time
to peak (TP), base mean envelope velocity (BMEV), response mean envelope
velocity (RMEV), base mean shear rate (BMSR) and response mean shear rate
(RMSR) were recorded using ultrasound at baseline and post handgrip RE
intervention. Blood pressure (BP) and heart rate (HR) measures were recorded by
use of a finometer throughout the entire study. Results: Paired t-tests revealed no
statistical significant difference between pre and post intervention measures for
variables (P>0.05), except for BMEV (baseline 7.3 ± 2.2; post intervention 11.1 ±
3.4 = 52% increase) and BMSR (baseline 145.6 ± 41.8; post intervention 214.8 ±
73.1 = 48% increase) (P<0.05). Conclusions: It was concluded that even though
the handgrip RE caused a significant increase in the variables BMEV and BMSR,
the exercise was not physically demanding enough to cause enough of an
increase in those variables to result in a vasodilatory or arterial stiffening
response.
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