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Fruit intake boosts mood after Pavlovian progressive muscle relaxation conditioning: Study
Fruit intake may improve mood after Pavlovian progressive muscle relaxation conditioning, finds a recent study published in Psychosomatic Medicine.
Perceived stress, lower fruit intake, and comfort eating are all risk factors for chronic disease. The present pilot study aimed to simultaneously mitigate all three risk factors by applying Pavlovian conditioning to change the nature of comfort eating. Specifically, stressed participants underwent a Pavlovian conditioning intervention designed to elicit comforting effects of fruit intake and thereby reduce negative mood while promoting fruit intake.
The researchers developed a seven-dose Pavlovian conditioning intervention wherein participants temporally paired together Progressive Muscle Relaxation (unconditioned stimulus) with fruit intake (conditioned stimulus) daily for 1 week. Participants (N = 100, mean [standard deviation] age = 20.7 [4.6] years; 74% female) with moderate to high levels of baseline perceived stress were randomized to the intervention or an active explicitly unpaired control group, wherein the Progressive Muscle Relaxation and fruit intake also occurred but was not temporally paired together. After the intervention, participants' negative mood was assessed immediately before and after fruit intake to assess conditioning effects. Then, participants logged their regular food intake for 4 days using the MyFitnessPal smartphone app.
Results of the study are:
After the intervention, fruit intake acutely improved negative mood to a greater extent among the intervention versus the control group.
However, there was not a significant between-group difference in intake of fruit or traditional comfort foods at post-intervention.
Thus, the researchers concluded that repeated pairing of fruit intake with a reliable distress-reducing activity led to the conditioning of comforting effects of fruit intake. Further refinement of the intervention design is necessary to translate this conditioned association to the actual intake of fruit and other foods.
Reference:
A Pavlovian Intervention to Condition Comforting Effects of Fruits by Finch, Laura E. et al. published in the Psychosomatic Medicine.
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751