A Personal Biography of a Physiological Misnomer: The Anaerobic Threshold

In 1973 Wasserman, Whipp, Koyal, and Beaver published a groundbreaking study titled “Anaerobic threshold and respiratory gas analysis during exercise”. At that time, respiratory gas analysis and laboratory computers had evolved such that more advanced respiratory exercise physiology studies were possible. The initial publications from this group on the onset of anaerobic metabolism in cardiac patients, the first breath-by-breath VO2 system, the first description of the anaerobic threshold, and then later new methods to detect the anaerobic threshold have been and continue to be highly cited. In fact, their 1973 anaerobic threshold paper is the sixth and their 1986 paper is the second most cited paper ever published in the Journal of Applied Physiology. The anaerobic threshold concept has also generated>5500 publications with the rates increasing over time. The publication of two papers that help to refute the “anaerobic” explanation for this phenomenon had no effect on the rates of citations of the original anaerobic threshold papers or the number of anaerobic threshold papers published since. Thus, despite now substantial evidence refuting the proposed anaerobic mechanisms underlying this phenomenon, these papers continue to be highly influential in the discipline of exercise physiology and, perhaps even more explicitly, clinical exercise physiology.

ADVANCED TECHNOLOGIES FOR ASSESSING THE STATE OF THE HUMAN-OPERATOR IN THE PROCESS OF PROFESSIONAL ACTIVITY

Introduction. The search for non-contact methods for assessing the functional state of a human operator in the process of professional activity is an urgent task of applied physiology. The technology for recording and analyzing physiological information based on the parameters of a person's voice can become one of the reliable and valid assessment methods. Research objective. Investigation of the possibility of non-contact voice biometrics for assessing fatigue, fatigue and / or psycho-emotional stress among operators in the course of their professional activities. Materials and methods. The study involved 14 civil aviation pilots. The pilots performed model flights on the aircraft cockpit prototyping stand with 6 different scenarios. Methods for assessing the central nervous and cardiovascular systems, the eye tracking method were used, the voice of the pilots was recorded with subsequent analysis of the parameterized voice characteristics. Research results. The state of pronounced fatigue begins to form after the 5th flight, which corresponds to the state of “functional stress”, the deterioration of the SVMR indicators relative to the background values after the 5th flight by an average of 14%, and after the 6th flight by 19% and the CVMR indicators by 19 and 26 %. An increase in the number and total duration of fixations, saccades and blinks by the 6th flight was revealed, as well as a change in the parameterized characteristics of the voice “Speech rate/pause” and “Width of the Fundamental tone peaks on the left”. Conclusions. Parametrized characteristics of human voice biometrics, which have similar dynamics with psychophysiological indicators of the state of the central nervous system, have been determined.

Microgravity Environments: The Physical Exercise in the Space

Nice to recede a thesis, transformed into a project and then finally into a great and beautiful research. also the "American magazine Biomedical Science & Research" publishes an article of mine which is then only an abstract of a work done during my university training where through physical exercise, applied physiology and rehabilitation in particular environments such as microgravity, we can find new methods to improve the quality of life on earth, for example for all those people who suffer from osteoporosis and arthrosis but not only. Exercise is medicine and when administered appropriately it helps to improve people's quality of life. Core, endurance, strength, neuroscience, the secrets for good longevity: heart health, brain health, muscle and joint health. Neuroscience and lagree method, besides fitness and wellness, neuro complex training. Happy to be part of this family and also to be its ambassador and researcher. also used by astronauts returning to earth.

Students teaching students: Can medical students play a part in undergraduate physiology teaching?

Over the past decade active and self-directed learning has been given precedence in medical curricula. At the Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka, a novel approach was trialed to teach applied physiology using a student-seminar, where the teaching content was developed by the medical students. Clinically relevant physiology topics were randomly allocated to ten studentgroups. Each group had to deliver their findings to peers and academic tutors during a seminar, using audiovisual aids. This study aimed to explore student perceptions regarding this novel learning experiment. Student perceptions of the seminar were explored using self-administered surveys and were rated. Analysis of subject-related knowledge showed that marks of the participants (n=125) had increased significantly, on average by 13% (t110= -8.878 p<0.001). Majority of students didn’t perceive the student seminar as satisfactory for teaching Applied Physiology. However, student seminars seem to be a useful way to enhance group learning and active self-directed learning. J Bngladesh Soc Physiol 2021;16(1): 57-60