Ventilation of horse riding helmets: what is the connection between laboratory and field measurements?
(Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - September 14, 2015 Category: Physiology Source Type: research
Postural influences on sweating: exploring the effects of gravity and pressure
(Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - September 14, 2015 Category: Physiology Source Type: research
Three years of Extreme Physiology & Medicine
(Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - September 4, 2015 Category: Physiology Source Type: research
In conversation with…Jim Sibree Milledge
Abstract
Whilst attending a conference last year, I was fortunate enough to be seated at lunch next to a very eminent octogenarian academic. Conversation ensued, and I was instantly captivated by his stories. These were not narratives filled with scientific facts but rather anecdotes of his life and the pathways he had taken to get where he was today. Fascinated by such accounts, I set about the task of interviewing persons of scientific acclaim, to learn more about their life stories and unwritten tales. ‘In conversation with…’ therefore offers readers a chance to s...
Source: Extreme Physiology and Medicine - August 22, 2015 Category: Physiology Source Type: research
Reliability of a new test battery for fitness assessment of the European Astronaut corps
Conclusions
In a small sample (n = 8) of young, healthy individuals, the AFA battery of tests demonstrated acceptable test–retest reliability for most parameters except some balance and single-leg jump tasks. These findings suggest that, for the application with astronauts, most AFA tests appear appropriate to be maintained in the test battery, but that some elements may be unreliable, and require either modification (duration, selection of task) or removal (single-leg jump, balance test on sphere) from the battery. The test battery is mobile and universally applicable for occupational and general...
Source: Extreme Physiology and Medicine - August 13, 2015 Category: Physiology Source Type: research
Myocardial functional responses do not contribute to maximal exercise performance in the heat
Conclusions
The small, negative impact of heat on exercise performance and
\(\dot{V}{\text{O}}_{ 2\hbox{max} }\)
could not be explained by disturbances in myocardial functional responses to exercise in young adult males. (Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - July 24, 2015 Category: Physiology Source Type: research
In conversation with…John Burnard West
(Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - July 1, 2015 Category: Physiology Source Type: research
In conversation with…John Wendell Severinghaus
(Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - June 30, 2015 Category: Physiology Source Type: research
Getting the most from venous occlusion plethysmography: proposed methods for the analysis of data with a rest/exercise protocol
Conclusions
In this methodological manuscript, we suggest a more detailed approach to processing venous occlusion plethysmography data, one which could provide additional physiological information. Six parameters are described, all of which are easily derived from a simple and reproducible experimental rest/exercise venous occlusion plethysmography protocol. (Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - June 8, 2015 Category: Physiology Source Type: research
Mitochondrial responses to extreme environments: insights from metabolomics
Abstract
Humans are capable of survival in a remarkable range of environments, including the extremes of temperature and altitude as well as zero gravity. Investigation into physiological function in response to such environmental stresses may help further our understanding of human (patho-) physiology both at a systems level and in certain disease states, making it a highly relevant field of study. This review focuses on the application of metabolomics in assessing acclimatisation to these states, particularly the insights this approach can provide into mitochondrial function. It includes an overview o...
Source: Extreme Physiology and Medicine - May 4, 2015 Category: Physiology Source Type: research
Career perspective: Charles M Tipton
Abstract
This invited autobiographical article pertains to 52 years as an exercise physiologist of which 16 years were devoted to being an active emeriti. Although the career pathway was circuitous in nature, once resolved, it included preparation of future exercise physiologists; reducing the health hazards associated with the “making of weight” by scholastic wrestlers; using animals (rats and dogs) as the model system with a myriad of experimental procedure for obtaining insights and understandings of various exercise training mechanism in one-G environments, and in simulated μG environments. F...
Source: Extreme Physiology and Medicine - April 17, 2015 Category: Physiology Source Type: research
Operational evaluation of the earlobe arterialized blood collector in critically ill patients
Conclusions
The new EABC® system concept is safe, fast and easy to use. Observed problems/difficulties are easily amendable with certain design modifications. Definitive versions of the prototype have the potential for significant benefits for isolated and extreme environments in medicine. (Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - April 2, 2015 Category: Physiology Source Type: research
A case study evaluation of competitors undertaking an antarctic ultra-endurance event: nutrition, hydration and body composition variables
Conclusions
Throughout the race, both groups were subjected to a negative change in energy balance which partly explained reduced body mass. Carbohydrate availability was limited inferring a greater reliance on fat and protein metabolism. Consequently, loss in fat-free mass was more prevalent with insufficient protein and caloric intake, which may relate to performance. (Source: Extreme Physiology and Medicine)
Source: Extreme Physiology and Medicine - March 12, 2015 Category: Physiology Source Type: research
Career perspective: Alf O. Brubakk—looking back to see ahead
Abstract
The following describes my professional life up till today, but it also describes what I think lies ahead. I have led an interesting professional life and been lucky enough to be at the centre of some of the important development in modern medicine and diving, namely ultrasound in cardiology and the mechanisms of decompression. I therefore should be able to see some of the most challenging and exciting problems ahead.
Ultrasound in cardiology has developed from simply listening to the Doppler signal to determine the velocity of blood flow to the complicated description of im...
Source: Extreme Physiology and Medicine - March 12, 2015 Category: Physiology Source Type: research
The physiological effects of hypobaric hypoxia versus normobaric hypoxia: a systematic review of crossover trials
Abstract
Much hypoxia research has been carried out at high altitude in a hypobaric hypoxia (HH) environment. Many research teams seek to replicate high-altitude conditions at lower altitudes in either hypobaric hypoxic conditions or normobaric hypoxic (NH) laboratories. Implicit in this approach is the assumption that the only relevant condition that differs between these settings is the partial pressure of oxygen (PO2), which is commonly presumed to be the principal physiological stimulus to adaptation at high altitude. This systematic review is the first to present an overview of the current availabl...
Source: Extreme Physiology and Medicine - February 26, 2015 Category: Physiology Source Type: research
