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ウィーン大学の研究者らは、8時間の社会的隔離は、同じ時間断食した場合と同等のエネルギーレベルの低下を引き起こす可能性があることを発見した。 この効果は、エネルギーの低下が社会的接触の欠如に対する人間の反応である可能性を示唆しており、実験室環境と新型コロナウイルス感染症によるロックダウン中の両方で見られ、より社交的な人々は隔離中にエネルギーレベルの低下を経験しました。
8時間社会的接触がないと、8時間食事をとらない場合と同じくらいエネルギーレベルが低下する可能性があります。
研究は実験室環境と実験中の両方で実施されました。[{” attribute=””>COVID-19 quarantine periods found that individuals experienced increased fatigue after eight hours of social isolation. This suggests that feelings of low energy could be an inherent human reaction to a lack of social interaction. The research, undertaken at the University of Vienna and published in Psychological Science, also demonstrated that this reaction was influenced by the social personality traits of the individuals involved.
Just as prolonged periods without food trigger a series of biological reactions that result in the sensation of hunger, our nature as social beings dictates that we also require the company of others for our survival. Evidence indicates that an absence of social interaction can provoke a craving response in our brains similar to hunger, driving us to seek out social connection again. This idea is supported by the “social homeostasis” theory, which proposes that there is a specialized homeostatic system in place to independently regulate our need for social interaction. Despite this, our understanding of the psychological reactions to social isolation remains limited. Furthermore, it’s unclear how these insights apply to the everyday social isolation we encounter, especially in the unique context of the COVID-19 quarantine periods.
A group of scientists led by Giorgia Silani from the University of Vienna investigated the effects of social isolation using comparable methodology across two contexts: in the laboratory and at home during the COVID-19 lockdown. For the study, 30 female volunteers came into the lab on three separate days, spending eight hours without social contact or without food, or with both social contact and food. Multiple times throughout the day, they indicated their stress, mood, and fatigue, while physiological stress responses, such as heart rate and cortisol, were recorded by the scientists. In order to validate the results of the laboratory study, the results were compared with measurements from a study conducted during the lockdown in Austria and Italy in the spring of 2020. In this study, they used data from 87 participants who had spent at least an eight-hour period in isolation and whose stress and behavioral effects were assessed with the same measurements several times a day for seven days.
“In the lab study, we found striking similarities between social isolation and food deprivation. Both states induced lowered energy and heightened fatigue, which is surprising given that food deprivation literally makes us lose energy, while social isolation would not”, first authors Ana Stijovic and Paul Forbes said. This result is further supported by the validation with data obtained during the lockdowns – participants who lived alone during the lockdown and who were generally more sociable also reported lower energy on days on which they were isolated, compared to days on which they had social interactions.
The authors propose that lowered energy may be a part of our homeostatic response to a lack of social contact and a potential precursor of some more detrimental effects of long-term social isolation. “It is well-known that long-term loneliness and fatigue are related, but we know little about the immediate mechanisms that underlie this link. The fact that we see this effect even after a short period of social isolation suggests that low energy could be a ‘social homeostatic’ adaptive response, which in the long run can become maladaptive”, explains Silani.
The study also found that contextual and personality factors modulated the effect of social isolation on fatigue; therefore, future studies will need to identify individuals who are most at risk from the effects of isolation.
Reference: “Homeostatic Regulation of Energetic Arousal During Acute Social Isolation: Evidence From the Lab and the Field” by Ana Stijovic, Paul A. G. Forbes, Livia Tomova, Nadine Skoluda, Anja C. Feneberg, Giulio Piperno, Ekaterina Pronizius, Urs M. Nater, Claus Lamm, and Giorgia Silani, 28 March 2023, Psychological Science.
DOI: 10.1177/09567976231156413
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