Why the study?
Does a psychological test alter parasympathetic nervous response measured by HRV in elderly patients with hand-arm vibration syndrome compared to healthy controls?
Does a psychological test alter parasympathetic nervous response measured by HRV in elderly patients with hand-arm vibration syndrome compared to healthy controls?
Answers are grounded in this paper and cite their sources.
Patients with hand-arm vibration syndrome without vibration-induced white finger exhibit a reduced post-exposure parasympathetic nervous response to psychological stress.
We investigated the parasympathetic nervous response to psychological test using heart rate variation (HRV) during deep breathing in elderly patients with hand-arm vibration syndrome and healthy controls. Average age (SD) of 16 patients with vibration-induced white finger (VWF), 13 patients without VWF and 12 healthy controls was 60.1 (2.8), 60.6 (4.2) and 58.8 (3.8), respectively. After an initial supine rest for 40 min, psychological test (Stroop color word test and mirror drawing test) was performed for 20 min. The indexes of HRV (Mean R-R, SD, RMSSD and CV) were calculated. Blood pressure and heart rate were also measured. The indexes of HRV did not differ between the groups before exposure. The SD, RMSSD and CV of the patients without VWF during supine deep breathing after 3 min post-exposure supine rest were significantly lower than those of the control group (p < 0.05). The Mean R-R of the patients without VWF significantly increased (p < 0.05). Blood pressure did not differ in either before or after exposure measurements. The results suggest that the post-exposure response of the parasympathetic nervous system to psychological test reduced in the patients without VWF.
No takes yet. Share an insight, caveat, or question.
Laskar et al. (1997) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: