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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
The Journal of Sports Medicine and Physical Fitness 2016 Nov 16
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.