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Effect of feedback signal and psychological characteristics on blood pressure self‐manipulation capability
Author(s) -
Lal Saroj K.L.,
Henderson Robyn J.,
Carter Norman,
Bath Andrew,
Hart Michael G.,
Langeluddecke Pauline,
Hunyor Stephen N.
Publication year - 1998
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/1469-8986.3540405
Subject(s) - psychology , signal (programming language) , social psychology , cognitive psychology , computer science , programming language
Blood pressure presentation mode and personality are likely to influence biofeedback outcome. Thirty‐six normotensive subjects were randomly assigned to visual or auditory continuous systolic feedback. “Distracting speech” and “broad band noise” were also superimposed and the effect on the biofeedback response was investigated. Psychological influence was also investigated. Systolic pressure reductions of 4 ± 4.3 mmHg (visual, p = .04) and 5 ± 5.5 mmHg (visual + auditory, p = .03) were achieved compared with auditory feedback (2 ± 4.7 mmHg), which was less effective. The addition of noise or speech had no effect on the systolic response, but speech adversely affected diastolic reduction ( p = .04). Mood ( p = .003) was associated with systolic lowering, whereas increased trait anxiety ( p = .06) and expectation ( p = .03) had trends for opposite effects. Increased anger‐hostility, state‐anxiety, and expectation ( p = .06) had links with systolic raising capability. We conclude that feedback modality and psychological characteristics have implications for studies investigating blood pressure manipulation capability.