Research published in Scientific Reports shows that a heartbeat-like vibration delivered onto the inside of the wrist can make the wearer feel significantly less stressed.
In work that was recently featured in the BBC's The One Show, researchers from the Psychology Department at Royal Holloway, University of London assessed the calming effects of a new wearable device called doppel - a wristband designed to actively reduce stress by using the intuitive responses that we all have to rhythm, and especially to heartbeats.
Humans naturally respond to rhythm. For example, the tempo of a song can naturally alter our breathing and heart rates. Slower tempos result in lower arousal and positive or calm emotional states, while we associate fast rhythms with arousing emotional states such as joy, excitement, surprise, fear or anger. Beyond music, several studies report similar effects in responses to biological rhythms, and the heartbeat is perhaps the most ubiquitous biological rhythm in nature. “Not only high arousal is physiologically correlated with increased heart rate whereas calmness is physiologically correlated with lower heart rate, but we also intuitively associate higher and lower heart rate with anxiety or high arousal, and calmness respectively” as Professor Tsakiris who led the study said. “The design of doppel, the device that we used in our study, was inspired by these insights”.
To test the efficacy of doppel, the researchers exposed volunteers to a socially stressful situation and measured their physiological arousal and their reported anxiety levels.
In a controlled, single-blind study, two groups of participants were asked to prepare a public speech - a widely used psychological task that consistently increases stress. All participants wore the device on their wrist and a cover story was used to suggest to participants that the device was measuring blood pressure during the anticipation of the task. Importantly, for only one of the two groups of participants, the device was turned on and delivered a heartbeat-like vibration at a slower frequency than the participants’ resting heart rate, while they were preparing their speech.
The researchers measured both physiological arousal and subjective reports of anxiety. The use of doppel had a tangible and measurable calming effect across both physiological and psychological levels. Only the participants who felt the heartbeat-like vibration displayed lower increases in skin conductance responses and lower anxiety levels. “Wearable devices are becoming ubiquitous in everyday life, but across the board their primary aim is to quantify our activity. The results we got suggest that, rather than measuring ourselves, we can instead harvest our natural responses to heartbeat like rhythms in ways that can assist people in their everyday life.” said Professor Tsakiris.
In 2015/16 stress accounted for 37% of all work-related ill-health cases and 45% of all working days lost due to ill health. doppel’s CEO Dr Fotini Markopoulou commented: “doppel aims to create a sensory experience to help people manage the pressures of time and stress in their daily lives. Whilst research shows that meditation and mindfulness can help to reduce stress over time, most of us don’t have this time to practice. Using doppel is a natural and distraction-free way to help the wearer to feel calmer, within moments, and when and where they want.”
Azevedo RT, Bennett N, Bilicki A, Hooper J, Markopoulou F & Tsakiris M (2017) The calming effect of a new wearable device during the anticipation of public speech. Scientific Reports, DOI : 10.1038/s41598-017-02274-2 will be freely available online at www.nature.com/articles/s41598-017-02274-2