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In JoVE (1)
Other Publications (4)
Articles by Lee S. Berk in JoVE
The Use of Thermal Infra-Red Imaging to Detect Delayed Onset Muscle Soreness
Hani H. Al-Nakhli1, Jerrold S. Petrofsky1,2, Michael S. Laymon2, Lee S. Berk1
1Loma Linda University, 2Azusa Pacific University
Other articles by Lee S. Berk on PubMed
Advances in Mind-body Medicine. Fall-Winter, 2003 | Pubmed ID: 14686267
Advances in Mind-body Medicine. 2007 | Pubmed ID: 20664125
Dr Lee S. Berk is a pioneering medical researcher studying the neuroendocrine and immune effects of positive emotions. He is an associate professor of Health Promotion and Education, School of Public Health, and associate research professor of Pathology and Human Anatomy, School of Medicine, both at Loma Linda University in Loma Linda, California. Dr Berk is a fellow of the American College of Sports Medicine and the American Association for Integrative Medicine. He is also nationally board certified as a health education specialist and has served as a member of the board of directors for the American College of Lifestyle Medicine in Loma Linda, California. Dr Berk is a member of the editorial board of Advances in Mind Body Medicine. During the Society for Neurosciences' annual 2001 meeting Dr Berk presented and received major media coverage of a landmark paper entitled, "The Anticipation of a Laughter Eustress Event Modulates Mood States Prior to the Actual Humor Experience." More recently Dr Berk presented at the FASEB (Federation of American Societies for Experimental Biology) annual 2006 meeting in the American Physiological Society section another landmark paper entitled, "Beta-Endorphin and HGH Increase are Associated With Both the Anticipation and Experience of Mirthful Laughter," with further major media coverage. Recently, Dr Berk spoke about his work with Sheldon Lewis, editor in chief of Advances.
Humor, As an Adjunct Therapy in Cardiac Rehabilitation, Attenuates Catecholamines and Myocardial Infarction Recurrence
Advances in Mind-body Medicine. 2007 | Pubmed ID: 20664127
Catecholamines, especially epinephrine, are implicated in causing arrhythmias, hypertension, and recurrence of myocardial infarction (MI). Diminishing or blocking the effect of catecholamines is useful in cardiac rehabilitation. We have shown previously that a single 1-hour viewing of a humorous video attenuates epinephrine production.
The Use of Thermal Infrared Imaging to Assess the Efficacy of a Therapeutic Exercise Program in Individuals with Diabetes
Diabetes Technology & Therapeutics. Feb, 2012 | Pubmed ID: 22011006
Abstract Background: Exercise is of great value for individuals with diabetes in helping to control their hemoglobin A1c levels and in increasing their insulin sensitivity. Delayed-onset muscle soreness (DOMS) is a common problem in healthy individuals and in people who have diabetes. People with diabetes are also faced with metabolic and endothelial impairments, which could make DOMS even worse. But because they usually have neuropathies, they may not feel this soreness appropriately, leading to premature return to exercise and causing further injuries. Research Design: One hundred eighteen subjects participated in this study and were divided into four groups. Two groups (healthy and diabetes) performed a series of abdominal exercises, and the other two groups (healthy and diabetes) performed a series of arm exercises to induce DOMS. Skin temperature above the muscle was assessed using a thermal infrared camera, and perceived soreness of the exercised muscle was assessed using a 100-mm visual analog scale. Serum myoglobin concentrations were also measured. Results: There was a significant increase in skin temperature 24â€‰h post-exercise for all four exercise groups (P<0.05), where the combined average increase in skin temperature for all four groups was approximately 0.65Â°C from baseline. Also, 24â€‰h post-exercise, all four groups were significantly sorer than they were at baseline (P<0.05). Serum myoglobin levels were also significantly higher on day 3 compared with day 1 (P<0.05). Conclusion: Infrared thermal imaging may be a valuable technique of seeing which muscles are sore hours or even days after the exercise is over. Thus, thermal imaging would be an efficient and painless way of looking at DOMS in both healthy individuals and individuals who have diabetes, even if they are facing neurological problems.