Social and Behavioral Sciences Commons^™

Immersion Cooling During Hyperthermia: Why Warmer May Be Better, Joanne N. Caldwell, Anne M. J Van Den Heuvel, Pete Kerry, Mitchell J. Clark, Gregory E. Peoples, Nigel A. S Taylor

Faculty of Health and Behavioural Sciences - Papers (Archive)

A significant number of military personnel suffer from exertional heat illness, with some extreme cases resulting in death. These illnesses may occur without warning, they are often characterised by a rapid onset and can occur even in experienced personnel. Various field treatments for hyperthermia have been developed, and one of particular interest is the use of cold-water immersion. Not surprisingly, immersion in ice-cold water (0-2oC) has been shown to be an effective means of rapidly reducing body core temperature (Proulx et al., 2003, 2006).

Revisiting Indices Of Hydration State During Progressive Dehydration To A 7% Water Deficit, Nigel A.S. Taylor, Anne M.J. Van Den Heuvel, Pete Kerry, Sheena S. Mcghee, Christiano A. Machado-Moreira, Marc A. Brown, Gregory E. Peoples

Faculty of Health and Behavioural Sciences - Papers (Archive)

Taylor, N. A.S.., van den Heuvel, A. M.J.., Kerry, P., McGhee, S. S., Machado-Moreira, C. A., Brown, M. A. & Peoples, G. E. Revisiting indices of hydration state during progressive dehydration to a 7% water deficit. Thirteenth International Conference on Environmental Ergonomics; Boston, USA: 2009. 286-289.

Does Lower Limb Neuromuscular Control Differ During Side-Step And Split-Step Cutting Manoeuvres?, Bridget J. Munro, Grant Trewartha, Julie R. Steele

Faculty of Health and Behavioural Sciences - Papers (Archive)

During side-step cutting, all the monitored muscles were recruited simultaneously reflecting co-contraction. Conversely, during split-step cutting, rectus femoris was initially recruited, followed by synchronous vastii and medial hamstrings onset and then lateral hamstring muscle onset. Although there were subtle differences in onset, the hamstrings ceased activity earlier than the quadriceps muscles in both cutting manoeuvres. Paired t-tests indicated that vastus medialis displayed a significantly (p < 0.02) earlier onset in the side-step compared to the split-step and rectus femoris displayed significantly (p = 0.05) longer burst duration in the split-step compared to the side-step. Whether these altered neuromuscular patterns are protective to the knee during split-step cutting manoeuvres, perhaps due to reduced anterior drawer, warrants further investigation. However, should the neuromuscular patterns observed in the split-step protect the ACL from injury, research should also investigate whether split-step cutting manoeuvres display any performance detriment compared to side-step cutting manoeuvres.

Psychophysiological Responses To Win And Loss Events During Electronic Gaming Machine (Egm) Play: A Pilot Investigation, Benjamin Wilkes, Craig J. Gonsalvez, Alex Blaszczynski

Faculty of Health and Behavioural Sciences - Papers (Archive)

The pilot study used state-of-the art psychophysiological equipment to monitor, on a second-bysecond basis, skin conductance level (SCL) and heart rate (HR) of university students (n = 12) in response to win and loss events while playing an electronic gaming machine (EGM). Each win and loss event was recorded and physiological changes associated with these events sorted and averaged based on event type (win/loss) and time (pre and post events). Compared to pre-event baselines, both SCL and HR increased following the occurrence of a win but not to a loss event. SCL was the more sensitive of the two measures, …

The Effect Of A Calorie Controlled Diet Containing Walnuts On Substrate Oxidation During 8-Hours In A Room Calorimeter, Linda C. Tapsell, Marijka Batterham, Sze Yen Tan, Eva M. Warensjo

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective Dietary macronutrient proportions affect substrate utilization, but in practice people consume foods. We hypothesized that in overweight adults, a calorie controlled diet based on core foods and including walnuts may be advantageous in promoting greater use of fat stores. Methods This crossover study tested the effects of diet-related energy expenditure and fat oxidation in 16 overweight individuals over an 8-hour period. The 2 diets included breakfast and lunch meals during the measurement period and an evening meal the night before. They comprised core foods of bread/cereals, fruit, vegetables, milk/yogurt, and meat, and either walnuts (walnut diet) or olive oil …

Women's Awareness Of The Importance Of Long-Chain Omega-3 Polyunsaturated Fatty Acid Consumption During Pregnancy: Knowledge Of Risks, Benefits And Information Accessibility, Danka S. Sinikovic, Heather R. Yeatman, Deborah Cameron, Barbara J. Meyer

Faculty of Health and Behavioural Sciences - Papers (Archive)

OBJECTIVE: To evaluate pregnant women's knowledge regarding the importance of long-chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA) consumption during pregnancy and assess their views on current information availability.

DESIGN: A 27-item demographic and food safety/behaviour questionnaire was administered to pregnant women during their antenatal clinic visits. chi2 tests were performed using SPSS.

SETTING: Antenatal clinics at two regional hospitals in New South Wales, Australia.

SUBJECTS: One hundred and ninety (n 190) pregnant women.

RESULTS: Three quarters of the women had not received information regarding LC n-3 PUFA. Approximately half of the women were aware …

Glideslope Perception During Aircraft Landing, Rebecca Murray, Robert S. Allison, Stephen A. Palmisano

Faculty of Health and Behavioural Sciences - Papers (Archive)

Ideally, when a pilot approaches a runway on their final approach for landing, they must maintain a constant trajectory, or glideslope, of typically 3°-4°. If pilots misperceive their glideslope and alter their flight path accordingly, they are likely to overshoot or undershoot their desired touch down point on the runway. This experiment examined the accuracy of passive glideslope perceptions during simulated fixed-wing aircraft landings. 17 university students were repeatedly exposed to the following four landing scene conditions: (i) a daylight scene of a runway surrounded by buildings and lying on a 100 km deep texture mapped ground plane; (ii) a …

Sweating And Skin Blood Flow Changes During Progressive Dehydration, Christiano Machado-Moreira, Joanne Caldwell, Anne Van Den Heuvel, Pete Kerry, Gregory E. Peoples, Nigel A.S. Taylor

Faculty of Health and Behavioural Sciences - Papers (Archive)

Cutaneous vasodilatation is essential for the convective delivery of heat from the body core to the periphery, whilst the evaporation of sweat dissipates this heat from the skin surface. Both of these physiological mechanisms must continue to function optimally for effective body temperature regulation to be sustained when exercising in the heat.

Cardiac Electrophysiology During Progressive And Controlled Dehydration: Inferences From Ecg Analysis During Steady-State Exercise And Recovery, Gregory E. Peoples, M. Brown, Anne M.J Van Den Heuvel, Pete Kerry, Nigel A.S. Taylor

Faculty of Health and Behavioural Sciences - Papers (Archive)

When fluid intake is insufficient to match sweat losses, dehydration develops. It is well established that dehydration impacts unfavourably upon cardiovascular function, including cardiac output and peripheral blood flow (Gonzalez-Alonso et al., 1998). However, the limitations of cardiac electrophysiology in the dehydrated state are not known. In light of possible electrolyte imbalances, particularly when water deficit moves towards 7% of total body mass, it is worth considering the possibility of adverse conduction changes, as reflected within the electrocardiogram (ECG), may accompany electrolyte loss. In addition, the ECG can also be employed to investigate other cardiac limitations, such as myocardial ischaemia. …