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Telles S, Gupta A, Sharma SK, Balkrishna A. Volitionally Regulated Breathing with Prolonged Expiration Influences Food Craving and Impulsivity. Complement Med Res 2024:1-14. [PMID: 38955170 DOI: 10.1159/000539618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 05/31/2024] [Indexed: 07/04/2024]
Abstract
INTRODUCTION Previously, an intervention involving volitional slow breathing reduced trait food craving with protective effects on cardiac vagal activity (CVA). Breathing with a low inspiration-to-expiration (i/e) ratio also increases CVA. High CVA was separately associated with low unregulated eating and lesser impulsivity. Hence, the present study assessed breathing with a low i/e for effects on state food craving, hunger and satiety, state impulsivity, and heart rate variability (HRV) in healthy obese persons. METHODS Forty obese persons were randomized to two groups. The intervention group (mean age ± SD, 41.15 ± 12.63, M:F, 10:10) practiced metronome-regulated breathing with low i/e at 12 breaths per minute (expiration 72% of total breath duration) and attained expiration 55.8% of total breath duration, while the active control group (mean age ± SD, 44.45 ± 11.06, M:F, 13:07) sat motionless and directed their gaze and awareness to the stationary metronome without modifying their breath consciously. The HRV was recorded before, during, and after breathing intervention (or control) (standard limb lead I, acquisition at 2,000 Hz, with an LF filter = 0.5 Hz and HF filter = 50 Hz). Time-domain and frequency-domain HRV parameters were obtained with Kubios software. State food craving, and hunger and satiety were recorded before and after the intervention/control. RESULTS The intervention group decreased total state food craving scores and the sub-domains (i.e., desire to eat, positive reinforcement, lack of control and hunger), increased current satisfaction with food, decreased total state impulsivity (repeated measures ANOVA, p < 0.05 in all cases), increased HF-HRV and RMSSD (linear mixed model analyses with age and gender as fixed factors; p < 0.05 in all cases) during the intervention compared to the preceding baseline. The intervention group also showed an increase in positive mood and a decrease in aroused and negative mood states. CONCLUSION Changes in state food craving and impulsivity could be related to an increase in HRV or to changes in subjective relaxation and positive mood or to both.
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Affiliation(s)
| | - Ami Gupta
- Patanjali Research Foundation, Haridwar, India
- Department of Yoga Science, University of Patanjali, Haridwar, India
| | | | - Acharya Balkrishna
- Patanjali Research Foundation, Haridwar, India
- Department of Yoga Science, University of Patanjali, Haridwar, India
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Derchi CC, Mikulan E, Mazza A, Casarotto S, Comanducci A, Fecchio M, Navarro J, Devalle G, Massimini M, Sinigaglia C. Distinguishing intentional from nonintentional actions through eeg and kinematic markers. Sci Rep 2023; 13:8496. [PMID: 37231006 DOI: 10.1038/s41598-023-34604-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/04/2023] [Indexed: 05/27/2023] Open
Abstract
How can an intentional movement be distinguished from the same movement done nonintentionally? How can this distinction be drawn without asking the subject, or in patients who are unable to communicate? Here we address these questions, by focusing on blinking. This is one of the most frequent spontaneous actions in our daily life, but it can also be done intentionally. Furthermore, blinking is often spared in patients with severe brain injuries, and for some, it is the only way to report complex meanings. Using kinematic and EEG-based measures, we found that intentional and spontaneous blinking are preceded by different brain activities, even when they are indistinguishable. Unlike spontaneous ones, intentional blinks are characterized by a slow negative EEG drift, resembling the classic readiness potential. We investigated the theoretical implication of this finding in stochastic decision models as well as the practical significance of using brain-based signals to improve the discrimination between intentional and nonintentional actions. As proof of principle, we considered three brain-injured patients with rare neurological syndromes characterized by motor and communicative impairments. Although further research is needed, our results indicate that brain-based signals can offer a feasible way to infer intentionality even in absence of overt communication.
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Affiliation(s)
- C C Derchi
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
| | - E Mikulan
- Department of Health Sciences, Università Degli Studi di Milano, Via di Rudinì 8, 20146, Milan, Italy
| | - A Mazza
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
| | - S Casarotto
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
- Department of Biomedical and Clinical Sciences, Università Degli Studi Di Milano, Via G. B. Grassi 75, 20157, Milan, Italy
| | - A Comanducci
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
| | - M Fecchio
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - J Navarro
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
| | - G Devalle
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy
| | - M Massimini
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, 20148, Milan, Italy.
- Department of Biomedical and Clinical Sciences, Università Degli Studi Di Milano, Via G. B. Grassi 75, 20157, Milan, Italy.
| | - C Sinigaglia
- Department of Philosophy, Università Degli Studi Di Milano, Via Festa del Perdono 7, 20122, Milan, Italy.
- Cognition in Action (CIA) Unit, PHILAB, 20122, Milan, Italy.
- Department of Philosophy, Stanford University, Stanford, CA, USA.
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Hoogerbrugge AJ, Strauch C, Oláh ZA, Dalmaijer ES, Nijboer TCW, Van der Stigchel S. Seeing the Forrest through the trees: Oculomotor metrics are linked to heart rate. PLoS One 2022; 17:e0272349. [PMID: 35917377 PMCID: PMC9345484 DOI: 10.1371/journal.pone.0272349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 07/19/2022] [Indexed: 11/18/2022] Open
Abstract
Fluctuations in a person’s arousal accompany mental states such as drowsiness, mental effort, or motivation, and have a profound effect on task performance. Here, we investigated the link between two central instances affected by arousal levels, heart rate and eye movements. In contrast to heart rate, eye movements can be inferred remotely and unobtrusively, and there is evidence that oculomotor metrics (i.e., fixations and saccades) are indicators for aspects of arousal going hand in hand with changes in mental effort, motivation, or task type. Gaze data and heart rate of 14 participants during film viewing were used in Random Forest models, the results of which show that blink rate and duration, and the movement aspect of oculomotor metrics (i.e., velocities and amplitudes) link to heart rate–more so than the amount or duration of fixations and saccades. We discuss that eye movements are not only linked to heart rate, but they may both be similarly influenced by the common underlying arousal system. These findings provide new pathways for the remote measurement of arousal, and its link to psychophysiological features.
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Affiliation(s)
- Alex J. Hoogerbrugge
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, Netherlands
- * E-mail:
| | - Christoph Strauch
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, Netherlands
| | - Zoril A. Oláh
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, Netherlands
| | - Edwin S. Dalmaijer
- School of Psychological Science, University of Bristol, Bristol, United Kingdom
| | - Tanja C. W. Nijboer
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, Netherlands
- Center of Excellence for Rehabilitation Medicine, UMC Utrecht Brain Center, University Medical Center Utrecht, De Hoogstraat Rehabilitation, Utrecht, Netherlands
- Department of Rehabilitation, Physical Therapy Science & Sports, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, Netherlands
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Wallace J, Andrianome S, Ghosn R, Blanchard ES, Telliez F, Selmaoui B. Heart rate variability in healthy young adults exposed to global system for mobile communication (GSM) 900-MHz radiofrequency signal from mobile phones. ENVIRONMENTAL RESEARCH 2020; 191:110097. [PMID: 32846174 DOI: 10.1016/j.envres.2020.110097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
Given the large number of mobile phone users and the increasing exposure to radiofrequency electromagnetic field (RF-EMF) worldwide, we aimed to study the effect of RF-EMF related to mobile phones on heart rate variability (HRV). Twenty-six healthy young adults participated in two experimental sessions with a double-blind, randomized and counter-balanced crossover design. During each session, participants were exposed for 26 min to a sham or real 900 MHz RF-EMF, generated by a commercial dual-band Global System for Mobile technology (GSM) mobile phone. We recorded an electrocardiogram at rest during the exposure. We evaluated HRV by time- and frequency-domain analysis. Evaluation of time-domain HRV parameters revealed a statistically significant increase of the standard deviation of interbeat intervals (SDNN) during the real exposure. Other time-domain parameters were not affected. Analysis in the frequency-domain demonstrated that total spectral power and low-frequency band (LF) absolute power were significantly increased during exposure (p = .046 and p = .043, respectively). However, other parameters were not affected. In conclusion, it seems that most HRV parameters were not affected by GSM signal exposure in our study. The weak effect observed on HRV frequency-domain is likely to represent a random occurrence rather than a real effect.
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Affiliation(s)
- Jasmina Wallace
- Department of Experimental Toxicology, Institut National de L'Environnement Industriel et des Risques (INERIS), 60550, Verneuil-en-Halatte, France; PériTox Laboratory, UMR-I 01 INERIS, Picardie Jules Verne University, 80025, Amiens, France
| | - Soafara Andrianome
- Department of Experimental Toxicology, Institut National de L'Environnement Industriel et des Risques (INERIS), 60550, Verneuil-en-Halatte, France; PériTox Laboratory, UMR-I 01 INERIS, Picardie Jules Verne University, 80025, Amiens, France
| | - Rania Ghosn
- Department of Experimental Toxicology, Institut National de L'Environnement Industriel et des Risques (INERIS), 60550, Verneuil-en-Halatte, France; PériTox Laboratory, UMR-I 01 INERIS, Picardie Jules Verne University, 80025, Amiens, France
| | | | - Frederic Telliez
- PériTox Laboratory, UMR-I 01 INERIS, Picardie Jules Verne University, 80025, Amiens, France
| | - Brahim Selmaoui
- Department of Experimental Toxicology, Institut National de L'Environnement Industriel et des Risques (INERIS), 60550, Verneuil-en-Halatte, France; PériTox Laboratory, UMR-I 01 INERIS, Picardie Jules Verne University, 80025, Amiens, France.
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