A5055444370- Exercise and Physiological Responses
- Thermoregulation and physiological responses
- Sports Performance and Training
- Muscle metabolism and nutrition
- Cardiovascular and exercise physiology
- Physical Activity and Health
- Adipose Tissue and Metabolism
- Mobile Health and mHealth Applications
- Diet and metabolism studies
- Sports injuries and prevention
- Technology Use by Older Adults
- Sports Dynamics and Biomechanics
- Body Composition Measurement Techniques
- Obesity, Physical Activity, Diet
- Diet, Metabolism, and Disease
- Occupational Health and Performance
- Coffee research and impacts
- Cardiovascular Effects of Exercise
- Asthma and respiratory diseases
- Infrared Thermography in Medicine
- Respiratory and Cough-Related Research
- Muscle activation and electromyography studies
- Sports Analytics and Performance
- Digital Mental Health Interventions
- Engineering Technology and Methodologies
Murdoch University
2023-2025
Avenir Health
2024
University of Tasmania
2013-2022
University of Toronto
2021
Edith Cowan University
2007-2013
Aintree University Hospital
2008
University of Liverpool
2008
The University of Western Australia
2007
Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata
2007
University of Milano-Bicocca
2007
To investigate the effect of ice slurry ingestion on thermoregulatory responses and submaximal running time in heat.On two separate occasions, a counterbalanced order, 10 males ingested 7.5 g·kg(-1) either (-1°C) or cold water (4°C) before to exhaustion at their first ventilatory threshold hot environment (34.0°C ± 0.2°C, 54.9% 5.9% relative humidity). Rectal skin temperatures, HR, sweating rate, ratings thermal sensation perceived exertion were measured.Running was longer (P = 0.001) after...
The purpose of this study was to compare the effects pre-exercise ice slurry ingestion and cold water immersion on submaximal running time in heat. On three separate occasions, eight males ran exhaustion at their first ventilatory threshold heat (34.0 ± 0.1 ° C, 52 3% relative humidity) following one 30 min manoeuvres: (1) ingestion; (2) immersion; or (3) warm fluid (control). Running longer (56.8 5.6 min; P = 0.008) (52.7 8.4 0.005) compared with control (46.7 7.2 min), but not...
Abstract Objective To compare the effects of isocaloric, energy-restricted very low-carbohydrate ketogenic (VLCK) and low-fat (LF) diets on weight loss, body composition, trunk fat mass, resting energy expenditure (REE) in overweight/obese men women. Design Randomized, balanced, two diet period clinical intervention study. Subjects were prescribed (-500 kcal/day) diets: a VLCK with goal to decrease carbohydrate levels below 10% induce ketosis LF similar national recommendations...
This study examined the effect of a 5-min cold-water immersion (14 degrees C) recovery intervention on repeated cycling performance in heat.10 male cyclists performed two bouts 25-min constant-paced (254 (22) W) session followed by 4-km time trial hot conditions (35 C, 40% relative humidity). The were separated either 15 min seated heat (control) or same condition with (5th-10th minute), using counterbalanced cross-over design (CP(1)TT(1) --> CWI CON CP(2)TT(2)). Rectal temperature was...
Abstract This study compared the effect of 5, 10 and 20 min cold-water (14°C) immersion on rectal muscle temperature neuromuscular function. Twelve cyclists performed four cycling time-to-exhaustion trials in hot conditions (40°C 40%rh), followed 25 later by for or room (24°C; control). Rectal was measured continuously, before, immediately after 45 time-to-exhaustion-test, as well before water immersion. Sixty-second maximal voluntary isometric torque isokinetic knee extensors were 55...
Background Laboratory studies that support the hydration guidelines of leading governing bodies have shown dehydration to only −2% body mass can lead increase in temperature and heart rate during exercise, decrease performance. These studies, however, been conducted relatively windless environments (ie, wind speed <12.9 km/h), without participants being blinded their status. Aim To investigate effect status on cycling time-trial performance heat with ecologically valid facing conditions....
Purpose The aim of this study was to investigate the effects postexercise cold water immersion (CWI) on tissue oxygenation and blood volume changes after intense exercise. Methods Nine physically active men performed 30 min continuous running (CR) at 70% their maximal treadmill velocity (Vmax), followed by 10 bouts intermittent Vmax. After exercise, one participants’ legs immersed in a bath (10°C, CWI) level gluteal fold for 15 min. contralateral leg remained outside served as control (CON)....
This investigation determined if 3 levels of controlled caffeine consumption affected fluid-electrolyte balance and renal function differently. Healthy males (mean ± standard deviation; age, 21.6 3.3 y) consumed mg · kg −1 d on days 1 to 6 (equilibration phase). On 7 11 (treatment phase), subjects either 0 (C0; placebo; n = 20), (C3; or (C6; 19) in capsules, with no other dietary intake. The following variables were unaffected ( P > 0.05) by different doses 1, 3, 6, 9, within normal...
This study investigated the effect of regular postexercise cold water immersion (CWI) on muscle aerobic adaptations to endurance training. Eight males performed 3 sessions/wk training for 4 wk. Following each session, subjects immersed one leg in a bath (10°C; COLD) 15 min, while contralateral served as control (CON). Muscle biopsies were obtained from vastus lateralis both CON and COLD legs prior 48 h following last session. Samples analyzed signaling kinases: p38 MAPK AMPK, peroxisome...
To investigate the effects of short-term, reduced-volume sprint interval training (SIT) compared to traditional exercise recommendations (TER) in sedentary obese men.Sixteen subjects [37.8 ± 5.8 years; body mass index (BMI) 32.8 4.7 kg/m(2)] were randomly allocated 2 weeks either SIT (6 sessions 8-12 × 10 s sprints) or TER [10 30 min at 65% peak oxygen consumption (VO(2peak))] cycle exercise. Fasting plasma glucose, insulin, non-esterified fatty acids (NEFA), homeostasis model assessment...
This investigation evaluated the new National Collegiate Athletic Association model of heat acclimatization for football players using physiological, psychological, fluid balance, anthropometric, and nutritional variables. Eleven (20 +/- 1 year, 1.88 0.05 m, 115.36 18.85 kg) from a Division I team were observed first 8 days preseason practices. Measurements such as heart rate gastrointestinal temperature (T(GI)) via telemetric sensor taken before, 3 times during, after practice daily. An...
This study aimed to investigate the influence of localized muscle cooling on postexercise vascular, metabolic, and mitochondrial-related gene expression.Nine physically active males performed 30 min continuous running at 70% their maximal aerobic velocity, followed by intermittent exhaustion 100% velocity. After exercise, subjects immersed one leg in a cold water bath (10°C, COLD) level gluteal fold for 15 min. The contralateral remained outside served as control (CON). Core body temperature...
Wearable activity trackers can help older adults remain physically active. However, knowledge of the user experience during long-term use is scarce. Therefore, this study examined adults' experiences with, and perceptions of, wearable combined with health professional feedback after a year's as part randomised controlled trial.Twenty (73.6 ± 5.5 years) who had used Jawbone UP24 tracker for 12 months trial were recruited study. All participants at least one chronic condition. Acceptability...
Diuretic-induced dehydration impairs prolonged running performance (> 1500 m). Sprinting may suffer by similar mechanisms (i.e., altered cardiovascular strain, heat storage, and metabolism) or improve because of reduced mass to accelerate carry.To examine sprint power after diuretic-induced dehydration.After six practice sessions, nine male former sprinters (mean +/- SD; age, 21 2 yr; body (BM), 80.0 5.2 kg; height, 1.78 0.08 m; fat, 14 4%) participated in a 50-m race, 200-m 400-m vertical...
Severe physical and environmental stress seems to have a suppressive effect on the hypothalamic-pituitary-gonadal (HPG) axis in men. Examining hormonal responses an extreme 160-km competition across frozen Alaska provides unique opportunity study this intense stress.To examine ultra-endurance race.Blood samples were obtained from 16 men before after racing analyzed for testosterone, interleukin-6 (IL-6), growth hormone (GH) cortisol. Six subjects (mean (SD) age 42 (7) years; body mass 78.9...
Background Despite a range of efforts to increase physical activity participation in Australia, inactivity levels older adults have remained high over recent decades, contributing increased rates chronic health conditions. Lifestyle interventions, including telephone counseling (TC), improve and associated outcomes the short term; however, ongoing feedback support is required maintain these changes. Newer technologies such as wearable trackers (ATs) may offer an alternative method for...
Introduction and aims Women’s rugby sevens is a rapidly growing sport that imposes unique match-play movement demands on participants. This research investigated the effect of contextual factors international domestic women’s players. Methods An observational, longitudinal study design was conducted to characterise Global Navigation Satellite Systems (GNSS) in (n = 23) 42) players across two seasons nine series an elite dual-level tournament. In total, 65 players, 1461 matches were analysed....
The reliability of near infrared spectroscopy derived tissue oxygenation index (TOI) and total haemoglobin concentration (tHb) were examined during continuous (CR) interval (INT) running. In a repeated measures design, 10 subjects twice performed 30 min CR at 70% their peak treadmill velocity, followed by bouts INT 100%. Between trial mean amplitude changes in TOI tHb determined. Muscle de-oxygenation re-oxygenation rates calculated using 3 analytical methods; i) linear modelling, ii)...
Strenuous exercise increases gastrointestinal damage, but the dose–response relationship is yet to be elucidated. It also commonly believed that running causes greater damage than cycling. Two randomised, crossover studies aimed 1) quantify with increasing intensity, and 2) determine if was associated Following a maximal oxygen uptake (V̇O 2max ) test, participants completed 3 cycling trials at different intensities (60 min 40%, 60% 80% V̇O ; n = 10 (5 female, 5 male)) (INTENSITY), or 1...