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Isometric handgrip (IHG) training-induced reductions in resting blood pressure: Reactivity to a 2-minute handgrip task identifies responders and non-responders in young normotensive individuals

Somani, Y., Hanik, S.-A., Malandruccalo, A., Freeman, S. R., Caruana, N., Badrov, M., Baross, A., Swaine, I. L., Milne, K. and McGowan, C. (2014) Isometric handgrip (IHG) training-induced reductions in resting blood pressure: Reactivity to a 2-minute handgrip task identifies responders and non-responders in young normotensive individuals. Other presented to: Canadian Society for Exercise Physiology, St John’s, Canada, 2014-10-22 - 2014-10-25.

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[thumbnail of Somani_Yasina_etal_FJ_2014_Isometric_handgrip_IHG_training_induced_reductions_in_resting_blood_pressure_Reactivity_to_a_2_minute_handgrip_task_identifies_responders_and_non_responders_in_young_normotensive_individuals]
Somani_Yasina_etal_FJ_2014_Isometric_handgrip_IHG_training_induced_reductions_in_resting_blood_pressure_Reactivity_to_a_2_minute_handgrip_task_identifies_responders_and_non_responders_in_young_normotensive_individuals
Somani_Yasina_etal_FJ_2014_Isometric_handgrip_IHG_training_induced_reductions_in_resting_blood_pressure_Reactivity_to_a_2_minute_handgrip_task_identifies_responders_and_non_responders_in_young_normotensive_individuals.pdf - Accepted Version
Information
Abstract:
In people with hypertension, systolic blood pressure (SBP) reactivity to an isometric handgrip task (IHGT), but not a cold pressure task (CPT), is predictive of IHG training-induced reductions in resting SBP. To investigate whether these findings could be extended to include young normotensives, resting BP and BP reactivity to an IHGT (2-minute sustained contraction at 30% maximal voluntary contraction, MVC) and a CPT (2-minute hand immersion in a cold water bath) were measured prior to and following 10 weeks of IHG training (4, 2-minute IHG contractions at 30% MVC, using alternating hands, interspersed with 1-minute rest periods, 3X/week) in 7 normotensive individuals (3 females, 4 males; age=25 ± 5.7 years). BP reactivity was derived by calculating the difference between peak stress BP and mean baseline resting BP. Significant training-induced reductions in resting SBP (p<0.001) were strongly correlated with pre-training SBP reactivity to the IHGT (r=-0.8, p=0.03), but not the CPT (r= 0.2, p=0.6). These preliminary findings suggest that SBP reactivity to a short and simple handgrip task can be used as a predictive tool to identify who will respond best to IHG training. It might be possible to further explore how the IHG training stimulus could be optimized in non-responders, to ensure that they too, experience reductions in resting BP.
Creators:
Somani, Y., Hanik, S.-A., Malandruccalo, A., Freeman, S. R., Caruana, N., Badrov, M., Baross, A., Swaine, I. L., Milne, K. and McGowan, C.
Faculties, Divisions and Institutes:
Faculties > Faculty of Health & Society > Sports, Exercise & Life Sciences
Research Centres > Centre for Physical Activity and Life Sciences
Date:
22 October 2014
Date Type:
Publication
Page Range:
p. 1
Journal or Publication Title:
Canadian Society for Exercise Physiology
Event Title:
Canadian Society for Exercise Physiology
Event Dates:
2014-10-22 - 2014-10-25
Place of Publication:
CAN
Event Location:
St John’s, Canada
Event Type:
Other
Language:
English
Status:
Published / Disseminated
Refereed:
Yes
Related URLs:
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