Can supervise: YES
McCleave, EL, Slattery, KM, Duffield, R, Saunders, PU, Sharma, AP, Crowcroft, S & Coutts, AJ 2019, 'Impaired Heat Adaptation From Combined Heat Training and Live High-Train Low Hypoxia.', International journal of sports physiology and performance, pp. 1-24.View/Download from: Publisher's site
PURPOSE::To determine whether combining training in heat with 'Live High, Train Low' hypoxia (LHTL) further improves thermoregulatory and cardiovascular responses to a heat tolerance test compared to independent heat training. METHODS::Twenty-five trained runners (VO2peak = 64.1 ±8.0 ml·min·kg-1) completed three-weeks training in one of three conditions: 1) Heat training combined with LHTL (H+H; FiO2 =14.4% (3000 m), 13 h·day-1; train at <600 m, 33°C, 55% RH); 2) heat training (HOT; live and train <600 m, 33°C, 55% RH); 3) temperate training (CONT; live and train <600 m, 13°C, 55% RH). Heat adaptations were determined from a 45 min heat response test (33°C, 55% RH, 65% vVO2peak) at baseline, immediately, one and three weeks' post exposure (Baseline, Post, 1wkP and 3wkP, respectively). Core temperature, heart rate, sweat rate and sodium concentration, plasma volume, and perceptual responses were analysed using magnitude based inferences. RESULTS::Submaximal heart rate (ES= -0.60(-0.89; -0.32)) and core temperature [ES= -0.55(-0.99; -0.10)] were reduced in HOT until 1wkP. Sweat rate [ES= 0.36(0.12; 0.59)] and sweat sodium concentration [ES= -0.82(-1.48; -0.16)] were respectively increased and decreased until 3wkP in HOT. Submaximal heart rate [ES= -0.38 (-0.85; 0.08)] was likely reduced in H+H at 3wkP, whilst CONT had unclear physiological changes. Perceived exertion and thermal sensation were reduced across all groups. CONCLUSIONS::Despite greater physiological stress from combined heat training and LHTL, thermoregulatory adaptations are limited in comparison to independent heat training. The combined stimuli provides no additional physiological benefit during exercise in hot environments.
McCleave, EL, Slattery, KM, Duffield, R, Saunders, PU, Sharma, AP, Crowcroft, SJ & Coutts, AJ 2017, 'Temperate Performance Benefits after Heat, but Not Combined Heat and Hypoxic Training.', Medicine and Science in Sports and Exercise, vol. 49, no. 3, pp. 509-517.View/Download from: UTS OPUS or Publisher's site
PURPOSE: Independent heat and hypoxic exposure can enhance temperate endurance performance in trained athletes, although their combined effects remain unknown. This study examined whether the addition of heat interval training during "live high, train low" (LHTL) hypoxic exposure would result in enhanced performance and physiological adaptations as compared with heat or temperate training. METHODS: Twenty-six well-trained runners completed 3 wk of interval training assigned to one of three conditions: 1) LHTL hypoxic exposure plus heat training (H + H; 3000 m for 13 h·d, train at 33°C, 60% relative humidity [RH]), 2) heat training with no hypoxic exposure (HOT, live at <600 m and train at 33°C, 60% RH), or 3) temperate training with no hypoxic exposure (CONT; live at <600 m and train at 14°C, 55% RH). Performance 3-km time-trials (3-km TT), running economy, hemoglobin mass, and plasma volume were assessed using magnitude-based inferences statistical approach before (Baseline), after (Post), and 3 wk (3wkP) after exposure. RESULTS: Compared with Baseline, 3-km TT performance was likely increased in HOT at 3wkP (-3.3% ± 1.3%; mean ± 90% confidence interval), with no performance improvement in either H + H or CONT. Hemoglobin mass increased by 3.8% ± 1.8% at Post in H + H only. Plasma volume in HOT was possibly elevated above H + H and CONT at Post but not at 3wkP. Correlations between changes in 3-km TT performance and physiological adaptations were unclear. CONCLUSION: Incorporating heat-based training into a 3-wk training block can improve temperate performance at 3 wk after exposure, with athlete psychology, physiology, and environmental dose all important considerations. Despite hematological adaptations, the addition of LHTL to heat interval training has no greater 3-km TT performance benefit than temperate training alone.
Wallace, LK, Coutts, AJ, Bell, J, Simpson, N & Slattery, KM 2008, 'Using session-RPE to monitor training load in swimmers', Strength and Conditioning Journal, vol. 30, no. 6, pp. 72-76.View/Download from: UTS OPUS
The ability to measure and control the internal training load (TL) of athletes is important to optimize athletic performance. However, at present, there are no methods available for evaluating internal TL during swimming. The session-RPE method is a practical, noninvasive system used to quantify the internal TL placed on athletes. This article discusses how the session-RPE method may be used to monitor swim training and ultimately improve the training process of swimmers.