Key result
Modified VR headset boosts heart rate variability ~12% vs sham in stressed adults.
Why the study?
Traditional stress management approaches are difficult to learn and apply in daily life, prompting investigation of virtual reality technology for stress reduction.
Does a modified VR intervention (Pure Purr technology) improve short-term heart rate variability and perceived anxiety levels in healthy volunteers affected by moderate stress?
RCT
Does a modified VR intervention (Pure Purr technology) improve short-term heart rate variability and perceived anxiety levels in healthy volunteers affected by moderate stress?
Mean Difference: 12.3 (95% CI 2.6–23.1)
p-value: p=0.02
A modified VR headset with biofeedback synchronization significantly improved short-term heart rate variability markers of parasympathetic recovery following moderate stress compared to a sham headset.
May support acute parasympathetic recovery via VR in healthy adults; leaves open clinical translation and anxiety effects.
Traditional approaches to stress management are difficult to learn and to implicate in daily life. Emerging technologies like virtual reality (VR) have become a target of extensive study for recreational and medical purposes. The autonomic nervous system (ANS) plays a crucial role in stress response, post-stress relaxation, and recovery. This study aimed to assess the effect of modified VR intervention on short-term heart rate variability (HRV) and perceived anxiety levels in healthy volunteers affected by moderate stress. The stressors included mental arithmetic tasks. The study involved healthy adults, of both sexes, aged 20 to 60 years, without history of cardiovascular diseases, essential abnormalities on ECG, and with normal or moderate level of situational anxiety. The VR gadgets used in the study were commercially available BoboVR X1 headsets, one with modification for medical applications (Pure Purr technology) and one with none (sham technology). The investigational (Pure Purr) headset with an audio-visual sequence was modified by adding a binaural effect and was synchronised with the tract of respiratory movements and the frequency of heart rate. To track changes in the ANS, participants underwent both electrocardiography (ECG) and measurement of HRV. The findings showed a significant increase in parasympathetic activity after five-minute exposure to the investigational device compared to stress, as shown by high-frequency HRV (499.8 ms2 and 340.5 ms2, p < 0.001). RMSSD for a modified headset was higher (p = 0.02) compared to a sham headset with no modifications (RMSSD difference of 12.3% [2.6% to 23.1%]). The LF/HF ratio, however, was lower (difference of 14.5% [2.6% to 23.1%], p = 0.04). These findings suggest that a medical device with pre-installed Pure Purr software had a significant effect on the recovery of the ANS in healthy volunteers affected by moderate stress.
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Aganov et al. (2020) conducted an RCT in Moderate stress. Pure Purr technology (modified VR headset) vs. Sham technology (unmodified VR headset) was evaluated on RMSSD (heart rate variability) (Difference 12.3%, 95% CI 2.6 to 23.1, p=0.02). A modified VR headset (Pure Purr) significantly improved heart rate variability compared to a sham headset in healthy adults under moderate stress, with a 12.3% higher RMSSD (95% CI 2.6-23.1%; p=0.02).
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