- Cardiovascular Effects of Exercise
- Sports injuries and prevention
- Injury Epidemiology and Prevention
- Sports Performance and Training
- Exercise and Physiological Responses
- Cardiovascular and exercise physiology
- High Altitude and Hypoxia
- Occupational Health and Performance
- Muscle metabolism and nutrition
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Travel-related health issues
- Heart Rate Variability and Autonomic Control
- Asthma and respiratory diseases
- Air Quality and Health Impacts
- Respiratory and Cough-Related Research
- Trauma and Emergency Care Studies
- Thermoregulation and physiological responses
- Climate Change and Health Impacts
- scientometrics and bibliometrics research
- Musculoskeletal pain and rehabilitation
- Agriculture and Farm Safety
- Shoulder Injury and Treatment
- Sports Dynamics and Biomechanics
- Sports Analytics and Performance
- Lower Extremity Biomechanics and Pathologies
University of Pretoria
2019-2025
Setshaba Research Centre
2021-2024
International Olympic Committee
2020-2022
Sports Science Institute of South Africa
2016-2021
University of Cape Town
2015-2018
Amsterdam UMC Location Vrije Universiteit Amsterdam
2017
There are no data relating symptoms of an acute respiratory illness (ARI) in general, and COVID-19 specifically, to return play (RTP).To determine if ARI associated with more prolonged RTP, days RTP (number, type, duration severity) differ athletes versus other ARI.Cross-sectional descriptive study.Online survey.Athletes confirmed/suspected (ARICOV) (n=45) (ARIOTH) (n=39).Participants recorded completed online survey detailing severity duration) three categories: 'nose throat', 'chest neck'...
Acute respiratory illness (ARill) is common and threatens the health of athletes. ARill in athletes forms a significant component work Sport Exercise Medicine (SEM) clinicians. The aim this consensus to provide SEM clinician with an overview practical clinical approach non-infective International Olympic Committee (IOC) Medical Scientific appointed international group review Key areas were originally identified six subgroups IOC Consensus established following aspects: (1) epidemiology/risk...
Acute illnesses affecting the respiratory tract are common and form a significant component of work Sport Exercise Medicine (SEM) clinicians. illness (ARill) can broadly be classified as non-infective ARill acute infections (ARinf). The aim this consensus is to provide SEM clinician with an overview practical clinical approach ARinf in athletes. International Olympic Committee (IOC) Medical Scientific Commission appointed international group review (non-infective ARinf) Six subgroups IOC...
BACKGROUND: Medical clearance is often recommended for athletes prior to endurance exercise. The primary aim was determine the percentage (%) of race entrants that sought medical participation in running events, describe diagnostic modalities used by doctors assess seeking clearance, and advice given. Secondary aims were investigate factors associated with outcome clearance.METHODS: All consenting who completed an online screening questionnaire during registration participate 21.1 km or 56...
Although it is known that both technical and tactical proficiency are required for success in rugby, not much about the interaction of these two characteristics their association with success. The aim this study was to describe relationship between defence tackle technique, its success, context playing situation. Tackle contact events (n=763) from 2010 Super 14 rugby tournament were coded based on situation, defensive characteristics, technique outcome. Then relative risk ratio (RRR)...
The aim of this study was to compare the incidence, severity, and burden injury in starting replacement players from professional men's teams five rugby unions.
ABSTRACT Purpose This study aimed to determine factors predictive of prolonged return training (RTT) in athletes with recent SARS-CoV-2 infection. Methods is a cross-sectional descriptive study. Athletes not vaccinated against COVID-19 ( n = 207) confirmed infection (predominantly ancestral virus and beta-variant) completed an online survey detailing the following factors: demographics (age sex), level sport participation, type sport, comorbidity history preinfection (training hours 7 d...
Rugby has a high injury incidence and therefore BokSmart introduced the Safe Six prevention programme in 2014 an attempt to decrease this incidence. In 2015, used 'targeted marketing approach' increase awareness knowledge of Six. Therefore, aim study was determine change coaches players programme, compared with launch year, following approach'.Ecological cross-sectional questionnaire SETTING: The 2014-2016 South African rugby union youth week tournaments.Questionnaires were completed by 4502...
Youth rugby is a popular sport in South Africa ( SA ) with high injury incidence. The annual Rugby Week tournaments attract the top age‐group players country providing sample of for reliable surveillance. aim study was to analyze changes time‐loss rates at between 2011 and 2016, differences age‐groups, investigate associated risk factors. All confirmed injuries 4 (under‐13, under‐16, 2 under‐18) from 2016 were recorded. Injury incidence densities IID years, tournaments, factors calculated...
Background The injury burden in rugby union (‘rugby’) is high. While exercise-based prevention programmes have successfully reduced injuries other sports such as football, there minimal research on this topic union. Objective To evaluate the effectiveness and implementation of an intervention (BokSmart Safe Six ) junior players that aims to reduce risk profile injury. Setting 14–16-year-old two geographically separated locations South Africa over 2017 playing season. Methods A...
Objective: To determine the incidence and nature of illness-related medical encounters (MEs) at a 90-km, ultramarathon, mass, community-based, endurance running event. Design: Retrospective, descriptive epidemiological study. Setting: Comrades Marathon (90 km), South Africa. Participants: One lakh three thousand one hundred thirty-one race starters over 6 years (2014-2019). Independent Variables: Incidence moderate serious/life-threatening MEs. Main Outcome Measures: All MEs were recorded by...
Objectives To determine whether a team illness prevention strategy (TIPS) would reduce the incidence of acute during Super Rugby tournament. Methods We studied 1340 male professional rugby union player seasons from six South African teams that participated in tournament (2010–2016). Medical staff recorded all illnesses daily (126 850 days) 3-year control (C: 2010–2012; 47 553 and 4-year intervention (I: 2013–2016; 79 297 period. A five-element TIPS was implemented I period, following...