A5051523617- Exercise and Physiological Responses
- Thermoregulation and physiological responses
- Sports Performance and Training
- Cardiovascular and exercise physiology
- Sports injuries and prevention
- Infrared Thermography in Medicine
- High Altitude and Hypoxia
- Adipose Tissue and Metabolism
- Heart Rate Variability and Autonomic Control
- Muscle metabolism and nutrition
- Climate Change and Health Impacts
- Dietary Effects on Health
- Sports and Physical Education Research
- Muscle Physiology and Disorders
- Cardiovascular Effects of Exercise
- Laser Applications in Dentistry and Medicine
- Tendon Structure and Treatment
- Orthopedic Surgery and Rehabilitation
- Myeloproliferative Neoplasms: Diagnosis and Treatment
- Sports Dynamics and Biomechanics
- Cardiac Ischemia and Reperfusion
- Winter Sports Injuries and Performance
- Bone fractures and treatments
- Thermal Regulation in Medicine
- Lower Extremity Biomechanics and Pathologies
Hong Kong Footwear Federation
2024-2025
Qatar Orthopaedic and Sports Medicine Hospital
2017-2024
National University of Singapore
2020-2024
UCLouvain
2024
Chiang Mai University
2023
Nanjing Sport Institute
2021
Potentia (Namibia)
2021
Liverpool John Moores University
2020
Nottingham Trent University
2020
University of Hull
2020
Purpose: The effect of crushed ice ingestion as a precooling method on 40-km cycling time trial (CTT) performance was investigated. Methods: Seven trained male subjects underwent familiarization and two experimental CTT which were preceded by 30 min either (ICE) or tap water (CON) consumption amounting to 6.8 g⋅kg -1 body mass. required athletes complete 1200 kJ work wind-braked cycle ergometer. During the CTT, gastrointestinal (T gi ) skin sk temperatures, time, power output, heart rate...
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)....
To characterise hydration, cooling, body mass loss, and core (Tcore) skin (Tsk) temperatures during World Athletics Championships in hot-humid conditions.Marathon race-walk (20 km 50 km) athletes (n=83, 36 women) completed a pre-race questionnaire. Pre-race post-race weight (n=74), Tcore (n=56) Tsk (n=49; thermography) were measured.Most (93%) had pre-planned drinking strategy (electrolytes (83%), carbohydrates (81%)) while ice slurry was less common (11%; p<0.001). More men than women...
To determine associations between thermal responses, medical events, performance, heat acclimation and health status during a World Athletics Championships in hot-humid conditions.From 305 marathon race-walk starters, 83 completed preparticipation questionnaire on acclimation. Core (Tcore; ingestible pill) skin (Tskin; camera) temperatures were measured in-competition 56 107 athletes, respectively. 70 in-race events analysed retrospectively. Performance (% personal best) did not finish (DNF)...
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...
This study examined the associations between pre-game wellness and changes in match running performance normalised to either (i) playing time, (ii) post-match RPE or (iii) both time RPE, over course of a field hockey tournament. Twelve male players were equipped with global positioning system (GPS) units while competing an international tournament (six matches 9 days). The following GPS-derived variables, total distance (TD), low-intensity activity (LIA; <15 km/h), high-intensity (HIR; >15...
OPINION article Front. Physiol., 20 November 2020Sec. Exercise Physiology Volume 11 - 2020 | https://doi.org/10.3389/fphys.2020.570472
Background : The Los Angeles 2028 Olympics will mark the debut of squash, a high-intensity sport characterized by repeated efforts, posing potential thermoregulatory challenges. demanding nature squash results in substantial metabolic heat production, with consequential strain exacerbated indoor environment courts, where low to moderate evaporative limits effective cooling. Players often experience increased body-heat storage and thermal strain, muscle cramps (an early warning sign more...
Core temperature (TCORE), skin (TTORSO) and running kinematics were measured across different athlete categories at a World Cup Sprint Triathlon, occurring during heatwave (~ 25-31 °C Wet Bulb Globe Temperature [WBGT]). Sixty-six triathletes participated: 21 (7 females), 32 Hong Kong-Elite (HK-Elite; 8 females) 13 Amateur (6 females). Seventeen displayed TCORE > 40.0 two 41.0 °C. Peak was not between (World Cup: 39.7 ± 0.6 °C; HK-Elite: 39.9 0.8 Amateur: 39.5 p = 0.357). However, there 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...
Ihsan, M, Yeo, V, Tan, F, Joseph, R, Lee, and Aziz, AR. Running demands activity profile of the new four-quarter match format in men's field hockey. J Strength Cond Res 35(2): 512-518, 2021-This study determined running hockey with regards to revised format. Twenty-eight male players were equipped global positioning system units while competing 14 competitive international games over a 1-year period. All matches allowed for unlimited substitutions, consisted four 15-minute quarters (i.e.,...
Summary This study compared the effect of postexercise water immersion ( WI ) at different temperatures on common femoral artery blood flow CFA ), muscle (total haemoglobin; tH b) and skin perfusion (cutaneous vascular conductance; CVC assessed by Doppler ultrasound, near‐infrared spectroscopy (NIRS) laser flowmetry, respectively. Given that heat stress may influence response during cooling, nine men cycled for 25 min first ventilatory threshold followed intermittent 30‐s cycling 90% peak...
Objective: The aim of the present study was to examine effect Cold Water Immersion (CWI) on recovery physical performance, hematological stress markers and perceived wellness (i.e., Hooper scores) following a simulated Mixed Martial Arts (MMA) competition. Method: Participants completed two experimental sessions in counter-balanced order (CWI or passive for control condition: CON), after MMAs competition (3×5-min MMA rounds separated by 1-min rest). During CWI, athletes were required...
Hot and humid ambient conditions may play a major role during the endurance events of 2019 IAAF world championships, 2020 summer Olympics many other sports events. Here, various countermeasures with scientific evidence are put in perspective their practical application. This manuscript is not comprehensive review, but rather set applied recommendations built upon sound reasoning experience elite athletes. The primary recommendation for an athlete who will be competing heat, to train heat....
This study identified the changes in hypertrophy/atrophy and mitochondrial-related signaling human skeletal muscle following whole-body (WB) localized single leg (SL) heat treatment. Nine active male participants were administered either 60 min of passive WB (44-50°C, 50% humidity) or SL (water-perfused suit at 49.5 ± 1.4°C) treatment least 1 week apart a counterbalanced order. The untreated during was considered as control (CON). Core, skin, quadriceps temperature monitored throughout...
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)...
This study determined the performance characteristics associated with successful exponents in Pencak Silat combat, as well examined relationship between indicators and match outcome (2015 South-East Asian Games 2016 World Championship) using both linear (binary logistic regression) non-linear (conditional interference (CI) classification tree) statistical techniques. A magnitude-based approach was used to compare for differences movement semi-finalist (SF) non-semi-finalist (NSF). Results...
The purpose of this study was to characterize thermoregulatory and performance responses elite road-race athletes, while competing in hot, humid, night-time conditions during the 2019 IAAF World Athletic Championships. Male female 20 km racewalk (n = males, 24 females), 50 19 8 marathon 15 22 females) participated. Exposed mean skin (Tsk) continuous core body (Tc) temperature were recorded with infrared thermography ingestible telemetry pill, respectively. range ambient (recorded roadside)...