This year members of the Environmental Extreme Lab (EEL) returned to the medical tent at the Brighton Marathon to carry out heat illness prevention research. The purpose of this year’s research was to collect questionnaire data on runners who were suffering from a heat illness. The heat illness susceptibility questionnaire (HIS-Q) was developed by a team of researchers within EEL and the initial reliability and validity was completed within a controlled laboratory environment at the University of Brighton. The Brighton Marathon presented the opportunity to test the HIS-Q in a field based environment, where core temperatures are often higher than that achieved through controlled laboratory testing.
The Environmental Extremes Lab once again supported athletes preparing for the Marathon des Sables this year, considered by many to be the world’s toughest foot race. Adding to the challenge of six stages, covering over 250km across sand dunes and desert, participants are required to carry all their own kit, have a limited water supply and, of greatest interest to our lab, do so in temperatures ranging from 30-50oC.
We are currently recruiting participants who are over 65 years old to take part in a research study that is examining different ways to prepare for hot weather in the UK. Kirsty Waldock, Rebecca Relf and Gregor Eichhorn are conducting this research as part of their PhD studies and would like to speak to you if you are interested in getting involved. Please see the recruitment poster below for details.
This research fits into a broader research theme within the Environmental Extremes Laboratory of ‘heat waves and the elderly’ and what practical heat alleviating methods can be used to reduce the negative consequences that hot weather can have on health, particularly during exercise.
“In a nutshell, your advice was not only spot on, it saved us. I believe that if your words about “Headache+1” had not gone through my head on that first night, I would have toughed it out, and in Dougie’s (professional guide) words, I would have lost. How seriously? Doesn’t bear thinking about.” (John Suchet, 2018)
The Environmental Extremes Lab (EEL) hosted the Suchet family, including John (newsreader and musical host on Classic FM) and David (Hercule Poirot) Suchet, on the Saturday 17th March ahead of their trek two weeks later to the iconic and breath-taking Inca city of Machu Picchu. In collaboration with local altitude awareness charity, Para-Monte, Dr Neil Maxwell, Gregor Eichhorn (PhD student), Mel Stemper (recent MSc graduate) and Josh Pennick (current MSc student) carried out altitude screening on the six members of the Suchet family, before Neil provided education around altitude illness and ways to prepare for the trek to make it enjoyable but also safer.
Over the past few weeks, Dr Ash Willmott and PhD students Rebecca Relf and Kirsty Waldock, have helped the MSc Applied Sport Physiology and MSc Applied Exercise Physiology students investigate the sudomotor responses while exercising in a hot, humid environment (35⁰C, 60% relative humidity), replicating expected conditions for the Tokyo 2020 Olympic Games.
Led by Ash and his current research theme of investigating alternate methods of heat acclimation outside of the traditional lab-based environmental chamber protocols, the students also assessed the efficacy of wearing a sauna suit during exercise in temperate conditions (20⁰C, 40% relative humidity).
Josie Adams, 26, an ultra-endurance athlete sponsored by the charity Paramonte, approached Dr Neil Maxwell and the EEL team at the University of Brighton to aid her with preparations for the Coastal Challenge in February 2018 – a 236 km race through part jungle, over trails and up into alpine terrain. Of course, the EEL team did not hesitate in declaring their support for Josie. Rebecca Relf took the lead, organising the week leading up to Josie’s departure for Costa Rica, where temperatures during the challenge were expected to be around 30°C whilst also very humid (~60-80% relative humidity). Rebecca and three other PhD students (Jason Newbery, Greg Eichhorn and Rosie Lewis) supported Josie in completing 9 heat acclimation sessions in 6 days. Although, taking a backseat on this occasion, support in the form of spreadsheet design and heads popping into the labs by Ash Willmott and Neil was greatly appreciated.
As part of our HB710 – Applied Environmental Physiology – Module which sits within our MSc in Applied Sport Physiology or Applied Exercise Physiology we ran a debate yesterday which we have run for the last few years on which environmental extreme is worse – heat, cold or altitude? The idea came from two BBC articles that posed the question of which environment was more challenging. It was a fun activity at the start of the module to help contextualise some of the problems that environmental extremes can bring and allow some of the students who are newer to environmental extremes to become acquainted with the subject and considerations. There is an underlying objective, which is to make the students think more about how they use research evidence, especially in graphical or tabular form to strengthen their arguments and rationales as this will help them later in the module’s assessment, but also stand them in good stead beyond their degree.
Research by Emily Watkins into practical pre-cooling methods for PPE wearers during severe heat exposure was published in Applied Ergonomics today (15/2/18). Pre-cooling is a method used to reduce core temperature, heart rate, and the sensation of being hot when individuals are exposed to hot environments. The aim is to reduce core temperature before the heat exposure, meaning an individual will stay at a safe core temperature for longer. In our previous study “Fire Service Instructors’ Working Practices: A UK Survey” it was indicated that few instructors used pre-cooling and those that did were using a variety of methods. This study aimed to assess three practical pre-cooling methods currently being used by instructors, to identify which method is the most beneficial in terms of reducing physiological and perceptual strain experienced from a heat exposure. Inflammatory responses were also investigated, as they can be markers of an increased risk of a cardiovascular event. The pre-cooling methods used were ice slurry consumption, phase change vest, and forearm cooling.