Key result
Type A personality was associated with a non-significant decrease in resting heart rate variability parameters, including RMSSD and pNN50, compared to Type B personality in healthy young adults.
Why the study?
The study was conducted to assess cardiac autonomic functions in healthy adults with type A and type B personalities using heart rate variability analyses.
Does Type A personality alter heart rate variability compared to Type B personality in healthy young adults?
Cross-Sectional (n=60)
No
Does Type A personality alter heart rate variability compared to Type B personality in healthy young adults?
In healthy young adults, Type A personality was associated with non-significant trends toward decreased parasympathetic and increased sympathetic tone compared to Type B personality.
Answers are grounded in this paper and cite their sources.
Non-significant HRV trends in Type A personality warrant no clinical action; leaves open autonomic effects in larger prospective studies.
Objective: To assess the cardiac autonomic functions in healthy adults with type A and type B personalities using heart rate variability (HRV) analyses. Methods: Two personality groups [Type A (n = 30) and Type B (n = 30)] Subjects based on the Hunter-Wolf Personality Questionnaire Scale were recruited from the Psychiatry Department of VMMC and Safdarjung Hospital, New Delhi, India. HRV parameters (LF, HF, LF: HF ratio, SDNN, RMSSD, total power and pNN50) were recorded for each subject. Data was compiled and analyzed with the help of SPSS Version 21.0. Results: In type A, RMSSD (41.21 ± 19.50 ms vs 45.56 ± 30.21 ms, p=1.000) and pNN50 (19.14 ± 16.59 ms vs 22.80 ± 22.90 ms, p=0.865) were lower than in type B. SDNN (49.87 ± 18.15 vs 48.13 ± 23.06 ms, p=0.469) was higher in type A than in type B. Frequency domain parameters like LF (928.27 ± 1002.50 ms2 vs 759.97 ± 581.75 ms2, p=0.734) and HF (1320.35 ± 1671.37 ms2 vs 1015.68 ± 845 ms2) were higher for type B compared to type A. The total power for type B was higher compared to type A (3052.50 ± 3197.96 ms2 vs 2857.15 ± 1893.20 ms2, p=0.46).
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Bharti et al. (2022) conducted a cross-sectional in Healthy adults (n=60). Type A personality vs. Type B personality was evaluated on RMSSD (ms) (p=1.000). Type A personality was associated with a non-significant decrease in resting heart rate variability parameters, including RMSSD and pNN50, compared to Type B personality in healthy young adults.
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