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Lorenzino M, D'Agostin F, Rigutti S, Bovenzi M, Fantoni C, Bregant L. Mood regulates the physiological response to whole-body vibration at low intensity. APPLIED ERGONOMICS 2023; 108:103956. [PMID: 36577272 DOI: 10.1016/j.apergo.2022.103956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/06/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
In the present study we evaluated the relationship between human vibrational comfort and psychophysiological processes. We exposed twenty-one participants to three levels of whole-body vibration at low intensity inside a full-scale mock-up of a ship cabin. Autonomic Nervous System (ANS) activity, mood and well-being state during each level of vibration exposure were measured. We found that a positive affective state determined greater changes in ANS activity in response to vibration variations compared to a negative affective condition. Furthermore, we found that variations of the vibration intensity did not always determine variations of the comfort experience at physiological and psychological level. The relevance of our findings is a challenge for comfort design research showing a gap between guidelines for comfort design and evidence based on psychophysiological responses to environmental stimulation.
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Affiliation(s)
- Martina Lorenzino
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/1, 34127, Trieste, Italy.
| | - Flavia D'Agostin
- Clinical Department of Medical, Surgical and Health Sciences, Clinical Unit of Occupational Medicine, Via della Pietà 2/2, 34129, Trieste, Italy.
| | - Sara Rigutti
- Department of Life Science, Psychology Unit "Gaetano Kanizsa", University of Trieste, Via E. Weiss, 2, 34128, Trieste, Italy.
| | - Massimo Bovenzi
- Clinical Department of Medical, Surgical and Health Sciences, Clinical Unit of Occupational Medicine, Via della Pietà 2/2, 34129, Trieste, Italy.
| | - Carlo Fantoni
- Department of Life Science, Psychology Unit "Gaetano Kanizsa", University of Trieste, Via E. Weiss, 2, 34128, Trieste, Italy.
| | - Luigi Bregant
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/1, 34127, Trieste, Italy.
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Bonanni R, Cariati I, Romagnoli C, D’Arcangelo G, Annino G, Tancredi V. Whole Body Vibration: A Valid Alternative Strategy to Exercise? J Funct Morphol Kinesiol 2022; 7:jfmk7040099. [PMID: 36412761 PMCID: PMC9680512 DOI: 10.3390/jfmk7040099] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Several studies agree that mechanical vibration can induce physiological changes at different levels, improving neuromuscular function through postural control strategies, muscle tuning mechanisms and tonic vibration reflexes. Whole-body vibration has also been reported to increase bone mineral density and muscle mass and strength, as well as to relieve pain and modulate proprioceptive function in patients with osteoarthritis or lower back pain. Furthermore, vibratory training was found to be an effective strategy for improving the physical performance of healthy athletes in terms of muscle strength, agility, flexibility, and vertical jump height. Notably, several benefits have also been observed at the brain level, proving to be an important factor in protecting and/or preventing the development of age-related cognitive disorders. Although research in this field is still debated, certain molecular mechanisms responsible for the response to whole-body vibration also appear to be involved in physiological adaptations to exercise, suggesting the possibility of using it as an alternative or reinforcing strategy to canonical training. Understanding these mechanisms is crucial for the development of whole body vibration protocols appropriately designed based on individual needs to optimize these effects. Therefore, we performed a narrative review of the literature, consulting the bibliographic databases MEDLINE and Google Scholar, to i) summarize the most recent scientific evidence on the effects of whole-body vibration and the molecular mechanisms proposed so far to provide a useful state of the art and ii) assess the potential of whole-body vibration as a form of passive training in place of or in association with exercise.
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Affiliation(s)
- Roberto Bonanni
- Department of Clinical Sciences and Translational Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Ida Cariati
- Department of Clinical Sciences and Translational Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Correspondence:
| | - Cristian Romagnoli
- Sport Engineering Lab, Department of Industrial Engineering, “Tor Vergata” University of Rome, Via Politecnico 1, 00133 Rome, Italy
| | - Giovanna D’Arcangelo
- Department of Systems Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Giuseppe Annino
- Department of Systems Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Virginia Tancredi
- Department of Systems Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, Via Montpellier 1, 00133 Rome, Italy
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cardiac autonomic control and neural arousal as indexes of fatigue in professional bus drivers. Saf Health Work 2022; 13:148-154. [PMID: 35664913 PMCID: PMC9142350 DOI: 10.1016/j.shaw.2022.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/19/2021] [Accepted: 01/23/2022] [Indexed: 11/22/2022] Open
Abstract
Background Bus driving is a mentally demanding activity that requires prolonged attention to ensure safety. The aim of the study was to assess mental fatigue caused by driving a public bus and to find a profile of workers at higher risk. Methods We evaluated changes of critical flicker fusion (CFF) (index of central arousal) and heart rate variability (HRV) (index of autonomic balance) in a 6-hour driving shift on a real route, in 31 professional bus drivers, and we tested the influence of personal factors such as sleep quality, BMI, and age. Paired t-test was used to test differences of CFF and HRV between both initial and final phase of driving, while multiple linear regression tested the influence of personal variables on the indexes of mental fatigue. Results Results showed that CFF significantly decreased after 6 hours of bus driving (41.91 Hz, sd 3.31 vs. 41.15 Hz, sd 3.15; p = 0.041), and heart rate significantly decreased in the final phase of driving, with respect to the initial phase (85 vs. 78 bpm, p = 0.027). Increasing age (beta = -0.729, p = 0.022), risk of obstructive sleep apnea syndrome (beta = -0.530, p = 0.04), and diurnal sleepiness (beta = -0.406, p = 0.017) showed a significant effect on influencing mental fatigue. Conclusion Elderly drivers at higher risk of sleep disorders are more prone to mental fatigue, when exposed to driving activity. Monitoring indexes of central arousal and autonomic balance, coupled with the use of structured questionnaires can represent a useful strategy to detect profile of workers at higher risk of mental fatigue in such duty.
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Marín-Farrona MJ, León-Jiménez M, García-Unanue J, Gallardo L, Liguori G, López-Fernández J. Influence of Non-Occupational Physical Activity on Burnout Syndrome, Job Satisfaction, Stress and Recovery in Fitness Professionals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18189489. [PMID: 34574412 PMCID: PMC8465796 DOI: 10.3390/ijerph18189489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/02/2021] [Accepted: 09/04/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND This study aimed (1) to analyse the effect of non-occupational physical activity (NOPA) on the stress levels of fitness professionals, and (2) to apply a questionnaire to workers measuring burnout syndrome, working conditions and job satisfaction, and to compare the results with physiological stress and recovery measured objectively through heart rate variability (HRV). METHODS The HRV of 26 fitness instructors was recorded during 2-5 workdays using Firstbeat Bodyguard 2. Participants also completed a questionnaire (CESQT) measuring working conditions and job satisfaction variables and occupational burnout syndrome. RESULTS NOPA showed a negative association with both the percentage of stress (p < 0.05) and stress-recovery ratio (p < 0.01), and a positive association with the percentage of recovery (p < 0.05). Better work conditions (working hours, salary satisfaction and length of service) were associated with lower stress in fitness professionals. CONCLUSION NOPA appears to improve the stress levels of fitness instructors in this study cohort. Self-reported burnout levels measured through the CESQT questionnaire do not coincide with the physiological stress responses measured through HRV. Better working conditions appear to reduce the stress response in fitness professionals.
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Affiliation(s)
- María Jesús Marín-Farrona
- IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain; (M.J.M.-F.); (M.L.-J.); (L.G.)
| | - Manuel León-Jiménez
- IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain; (M.J.M.-F.); (M.L.-J.); (L.G.)
| | - Jorge García-Unanue
- IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain; (M.J.M.-F.); (M.L.-J.); (L.G.)
- Correspondence: ; Tel.: +34-653-86-65-48
| | - Leonor Gallardo
- IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain; (M.J.M.-F.); (M.L.-J.); (L.G.)
| | - Gary Liguori
- College of Health Sciences, University of Rhode Island, 55 Lower College Road, Kingston, RI 02881, USA;
| | - Jorge López-Fernández
- Centre for Sport, Exercise and Life Sciences (CSELS), Coventry University, Coventry CV1 5FB, UK; or
- School of Sport Sciences, Universidad Europea de Madrid, 28670 Madrid, Spain
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Jalilian H, Gorjizadeh O, Najafi K, Falahati M. Effects of whole body vibration and backrest angle on perceived mental workload and performance. EXCLI JOURNAL 2021; 20:400-411. [PMID: 33746669 PMCID: PMC7975586 DOI: 10.17179/excli2020-2699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 02/11/2021] [Indexed: 01/10/2023]
Abstract
Mental Workload (MWL) and human performance are widely contributing concepts in human factors. The objective of the current study is to investigate the perceived MWL and human performance during whole-body vibration (WBV) exposure while seated at different backrest angles. Nineteen healthy male participants completed both the NASA-TLX and rating scale mental effort (RSME) after performing two difficulty levels of computerized dual tasks. The participants' performance was measured in these conditions while seated with a backrest angle of 100 and 120 degrees and exposed to WBV (intensity: 0.5 m/s2; frequency 3-20 Hz) for 5 minutes. No significant effect on performance or perceived MWL (p<0.05) was found when changes were made to the backrest angles. Exposure to WBV under two backrest angles increased mental demand (p=0.04), effort (p=0.03) and frustration (p=0.03) and negatively affected human performance (p<0.05). The present study showed that exposure to WBV could be an important variable for designing work environments that require a high level of performance and mental demand while seated. However, the findings exhibited no association between inclining backrest angle and human performance or perceived MWL.
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Affiliation(s)
- Hamed Jalilian
- Department of Occupational Health Engineering, Research Center for Environmental Pollutants, Faculty of Health, Qom University of Medical Sciences, Qom, Iran.,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omid Gorjizadeh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kamran Najafi
- Student Research Committee, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Mohsen Falahati
- Department of Occupational Health Engineering, Faculty of Health, Saveh University of Medical Sciences, Saveh, Iran
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Lorenzino M, D'Agostin F, Rigutti S, Bovenzi M, Fantoni C, Bregant L. Acoustic comfort depends on the psychological state of the individual. ERGONOMICS 2020; 63:1485-1501. [PMID: 32780646 DOI: 10.1080/00140139.2020.1808249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
Recent studies have shown that comfort can be influenced more by psychological processes than from the characteristics of environmental stimulation. This is relevant for different industrial sectors, where comfort is defined only as a function of the intensity of external stimuli. In the present study, we measured physiological and psychological comfort during the exposure to four levels of acoustic noise [from 45 to 55 dB(A)] corresponding to different comfort classes inside a full-scale mock-up of a cruise ship cabin. We found an increase of psychological and physiological discomfort for higher noise intensities, but not for all the intensities defining the comfort classes. Furthermore, we found that negative psychological states determine a lower physiological sensitivity to acoustic noise variations compared to positive states. Our results show that, at normal/low intensities, psychological processes have a greater role in determining acoustic comfort when compared to the stimulus intensity. Practitioner Summary: This study shows that psychological factors can be more relevant in determining acoustic comfort inside a ship cabin than the intensity of acoustic stimulus itself. This finding suggests that the cruise industry should consider not only the engineering measurements when evaluating comfort on board, but also the passenger' psychological state. Abbreviations: AIC: akaike information criterion; CCT: colour correlated temperature; cd/m2: candela/square meters; df: degrees of freedom; F-test: Fisher's test; HF: high frequency; HR: heart rate; HRV: heart rate variability; HSV: hue saturation value; K: kelvin; LF: low frequency; LF/HF: low frequency to high frequency ratio; lme: linear mixed effects; ms: milliseconds; nu: normalized unit; p: p value; pNN50: percentage of adjacent pairs of normal to normal RR intervals differing by more than 50 milliseconds; r2: coefficient of determination; rc: concordance correlation coefficient; RMSSD: square root of the mean normal to normal RR interval; SD: standard deviation; SDNN: standard deviation of normal to normal RR intervals; SEM: standard error of the mean; t-test: student's tests; χ2: chi-square test.
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Affiliation(s)
- Martina Lorenzino
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Flavia D'Agostin
- Clinical Department of Medical, Surgical and Health Sciences, Clinical Unit of Occupational Medicine, Trieste, Italy
| | - Sara Rigutti
- Department of Life Science, Psychology Unit "Gaetano Kanizsa", University of Trieste, Trieste, Italy
| | - Massimo Bovenzi
- Clinical Department of Medical, Surgical and Health Sciences, Clinical Unit of Occupational Medicine, Trieste, Italy
| | - Carlo Fantoni
- Department of Life Science, Psychology Unit "Gaetano Kanizsa", University of Trieste, Trieste, Italy
| | - Luigi Bregant
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
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