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A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
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The Journal of Sports Medicine and Physical Fitness 2016 Nov 16

language: English

Blood pressure response to isometric handgrip testing and aerobic capacity and associations with sprint performance in middle-aged men following high-intensity interval training

Ryszard ZARZECZNY 1, Cyprian TOMZA 1, Anna POLAK 2, Agnieszka NAWRAT-SZOŁTYSIK 2

1 Institute of Physical Education, Tourism and Physiotherapy, Jan Długosz University in Częstochowa, Częstochowa, Poland; 2 Chair of Physiotherapy Basics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland


BACKGROUND: Of this study were to determine if a 6-week high-intensity interval training (HIIT) protocol with increasing exercise volume affects aerobic capacity and arterial blood pressure (BP) measured during a fatiguing isometric handgrip test (IHT) in middle-aged, normotensive men and to assess whether sprint performance is associated with training-induced changes in BP.
METHODS: Fourteen recreationally active men (age 43.0 ± 0.9 years, body mass 74.4 ± 2.1 kg, body height 1.74 ± 0.02 m, BMI 24.7 ± 0.5 kg/m2 [mean ± SE]) participated in 12 HIIT sessions at an intensity of 85% of heart rate reserve. Sprinting ability was estimated at baseline using the 50-yard dash test (50YDT). Pre- and post-HIIT aerobic capacity and pressor response was assessed by the 12-min Cooper run test (12CT) and the IHT at 30% of maximal voluntary contraction, respectively.
RESULTS: Following the intervention, the distance covered in the 12CT and handgrip time to fatigue (HTF) significantly increased (p < 0.05) but only diastolic BP significantly decreased (p < 0.05) compared with pre-HIIT values. Changes (Δ – post- vs. pre-HIIT values) in HTF correlated positively with 50YDT performance (p < 0.05). However, significant negative relationships were found between 50YDT and Δ in systolic, diastolic, and mean BP during the IHT except for resting values.
CONCLUSIONS: The findings suggest that a HIIT intervention in middle-aged, normotensive men enhances aerobic capacity with a concomitant decrease in DBP and that training-induced ΔBP during IHT are dependent on sprinting ability.

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