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Cardiovascular stress reactivity tasks successfully predict the hypotensive response of isometric handgrip training in hypertensives
Author(s) -
Badrov Mark B.,
Horton Sean,
Millar Philip J.,
McGowan Cheri L.
Publication year - 2013
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/psyp.12031
Subject(s) - isometric exercise , blood pressure , reactivity (psychology) , cold pressor test , cardiology , psychology , medicine , heart rate , alternative medicine , pathology
This study aimed to determine whether: (a) isometric handgrip ( IHG ) training lowers resting blood pressure ( BP ), (b) cardiovascular reactivity to a serial subtraction ( SST ), IHG ( IHGT ), and cold pressor ( CPT ) task predicts this hypotensive response, and (c) cardiovascular reactivity is attenuated posttraining. Resting BP and cardiovascular reactivity to a SST , IHGT , and CPT were measured in 24 hypertensives (51–74 years) before and after 10 weeks of IHG training ( n = 12) or control ( n = 12). IHG training lowered resting BP (Δ8/5 mmHg), whereby the decrease in systolic BP was correlated to pretraining systolic BP reactivity to the SST ( r = −.85) and IHGT ( r = −.79; all p s < .01), but not the CPT ( r = .34; p > .01). Furthermore, following IHG training, systolic BP reactivity to the SST (Δ7 mmHg) and IHGT (Δ8 mmHg) was reduced (all p s < .01). The results offer promising implications for hypertensives and may provide a tool to identify IHG training responders.