A5001371188- High Altitude and Hypoxia
- Muscle metabolism and nutrition
- Sports Performance and Training
- Cardiovascular and exercise physiology
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Exercise and Physiological Responses
- Neuroscience of respiration and sleep
- Adipose Tissue and Metabolism
- Diet and metabolism studies
- Genetics and Physical Performance
- Iron Metabolism and Disorders
- Erythropoietin and Anemia Treatment
- Climate Change and Health Impacts
- Hemoglobinopathies and Related Disorders
- Heart Rate Variability and Autonomic Control
- Thermoregulation and physiological responses
- Cardiovascular Effects of Exercise
- Biochemical effects in animals
- Sleep and related disorders
- Hemoglobin structure and function
- Nutrition and Health in Aging
- Adventure Sports and Sensation Seeking
- Travel-related health issues
- Muscle activation and electromyography studies
- Cardiovascular and Diving-Related Complications
Australian Catholic University
2016-2022
Services Australia
2020
Deakin University
2020
Australian Sports Commission
2013-2019
University of Canberra
2013-2018
ACT Government
2013-2016
Netaji Subhas National Institute of Sports
2013
Key points Three weeks of intensified training and mild energy deficit in elite race walkers increases peak aerobic capacity independent dietary support. Adaptation to a ketogenic low carbohydrate, high fat (LCHF) diet markedly rates whole‐body oxidation during exercise over range intensities. The increased result reduced economy (increased oxygen demand for given speed) at velocities that translate real‐life performance walkers. In contrast with diets providing chronic or periodised...
Elite rowers complete a high volume of training across number modalities to prepare for competition, including periods intensified load, which may lead fatigue and short-term performance decrements. As yet, the influence substantial on resting metabolic rate (RMR) exercise regulation (pacing), their subsequent utility as monitoring parameters, has not been explicitly investigated in elite endurance athletes.Ten National-level completed four-week period training. RMR, body composition energy...
Recent research has demonstrated decreases in resting metabolic rate (RMR), body composition and performance following a period of intensified training elite athletes, however the underlying mechanisms change remain unclear. Therefore, aim present study was to investigate how an period, designed elicit overreaching, affects RMR, composition, trained endurance elucidate mechanisms.Thirteen (n = 13) male cyclists completed six-week program consisting "Baseline" week (100% regular load),...
To investigate the influence of daily oral iron supplementation on changes in hemoglobin mass (Hbmass) and parameters after 2-4 weeks moderate altitude exposure.Hematological data collected from 178 athletes (98 males, 80 females) exposed to (1,350-3,000 m) were analysed using linear regression determine how exposure combined with influenced Hbmass, total incorporation (TII) blood [ferritin transferrin saturation (TSAT)].Altitude (mean ± s: 21 3 days) increased Hbmass by 1.1% [-0.4, 2.6],...
Despite the limited research on effects of altitude (or hypoxic) training interventions team-sport performance, players from all around world engaged in these sports are now using more than ever before. In March 2013, an Altitude Training and Team Sports conference was held Doha, Qatar, to establish a forum practical insights into this rapidly growing field. A round-table meeting which panellists focused discussions concluded conference. This has resulted present position statement, designed...
Objectives: To investigate diet-exercise interactions related to bone markers in elite endurance athletes after a 3.5-week ketogenic low-carbohydrate, high-fat (LCHF) diet and subsequent restoration of carbohydrate (CHO) feeding. Methods: World-class race walkers (25 male, 5 female) completed 3.5-weeks energy-matched (220 kJ·kg·d-1) high CHO (HCHO; 8.6 g·kg·d-1 CHO, 2.1 protein, 1.2 fat) or LCHF (0.5 75-80% energy from followed by acute restoration. Serum breakdown (cross-linked C-terminal...
Background Altitude exposure causes acute sleep disruption in non-athletes, but little is known about its effects elite athletes. The aim of this study was to examine the altitude on two groups athletes, that is, sea-level natives and high-altitude natives. Methods Sea-level were members Australian under-17 soccer team (n=14). High-altitude a Bolivian under-20 club (n=12). Teams participated an 18-day (19 nights) training camp Bolivia, with 6 nights at near sea level Santa Cruz (430 m) 13...
To examine the time course of wellness, fatigue and performance during an altitude training camp (La Paz, 3600 m) in two groups either sea-level (Australian) or (Bolivian) native young soccer players.Wellness were assessed using questionnaires resting heart rate (HR) HR variability. Physical was responses to a submaximal run, Yo-Yo Intermittent recovery test level 1 (Yo-YoIR1) 20 m sprint. Most measures performed daily, with exception Yo-YoIR1 sprints, which near sea on days 3 10 at...
ABSTRACT Purpose The short-term restriction of carbohydrate (CHO) can potentially influence iron regulation via modification postexercise interleukin-6 (IL-6) and hepcidin levels. This study examined the effect a chronic ketogenic low-CHO high-fat (LCHF) diet on status iron-regulatory markers in elite athletes. Methods International-level race walkers ( n = 50) were allocated to one three dietary interventions: (i) high-CHO 16), (ii) periodized CHO availability 17), or (iii) an LCHF 17)...
Altitude training is used by elite athletes to improve sports performance, but it may also disrupt sleep. The aim of this study was examine the effects 2 weeks at high altitude on sleep young athletes.Participants (n=10) were members Australian under-17 soccer team an 18-day (19-night) camp in Bolivia, with six nights near sea level Santa Cruz (430 m) and 13 La Paz (3600 m). Sleep monitored using polysomnography during a baseline night 430 m three 3600 (immediately after ascent, 1 week...
The optimal strategy for soccer teams playing at altitude is not known, that is, 'fly-in, fly-out' versus short-term acclimatisation. Here, we document changes in blood gas and vascular volumes of sea-level (Australian, n=20) (Bolivian, n=19) native players 3600 m.Haemoglobin-oxygen saturation (Hb-sO₂), arterial oxygen content (CaO₂), haemoglobin mass (Hbmass), volume (BV) concentrations were measured before descent (Bolivians only), together with aerobic fitness (via Yo-YoIR1), near...
Objectives We investigated the effect of high altitude on match activity profile elite youth and sea level residents. Methods Twenty Sea Level (Australian) 19 Altitude-resident (Bolivian) soccer players played five games, two near (430 m) three in La Paz (3600 m). Match was quantified via global positioning system with peak 5 min period for distance ((D 5peak )) velocity running (>4.17 m/s, HIVR ); as well immediately subsequent to both (D 5sub ) high-velocity (HIVR identified using a...
Purpose To determine the effect of intravenous iron supplementation on performance, fatigue and overall mood in runners without clinical deficiency. Methods Fourteen distance with serum ferritin 30–100 µg·L−1 were randomly assigned to receive three blinded injections ferric-carboxymaltose (2 ml, 100 mg, IRON) or normal saline (PLACEBO) over four weeks (weeks 0, 2, 4). Athletes performed a 3,000 m time trial 10×400 monitored training session consecutive days at week 0 again following each...
High altitude exposure can increase resting metabolic rate (RMR) and induce weight loss in obese populations, but there is a lack of research regarding RMR athletes at moderate elevations common to endurance training camps. The present study aimed determine whether 4 weeks classical affects middle-distance runners. Ten highly trained were recruited for undertaking identical programs either 2200m Flagstaff, Arizona (ALT, n = 5) or 600m Canberra, Australia (CON, 5). RMR, anthropometry, energy...
ABSTRACT Purpose Iron is integral for erythropoietic adaptation to hypoxia, yet the importance of supplementary iron compared with existing stores poorly understood. The aim present study was compare magnitude hemoglobin mass (Hb ) in response altitude athletes intravenous (IV), oral, or placebo supplementation. Methods Thirty-four, nonanemic, endurance-trained completed 3 wk simulated (3000 m, 14 h·d −1 ), receiving two three bolus injections (ferric carboxymaltose), daily oral...