BACKGROUND A double burden of both under- and over-nutrition exists among South African children. AIM To describe associations between nutritional statuses and health-related fitness test performances. SUBJECTS AND METHODS Height and weight of 10 285 children (6-13 years; n = 5604 boys and 4681 girls) were measured and used to calculate body mass index (BMI) and prevalence of overweight and...

The purpose of this study was to calculate and validate reference standards for the 20-m shuttle run test (SR) in youths aged 10-18 years. Reference standards based on the number of completed SR laps were calculated by LMS method in a reference group of 5559 students. Cut-off values for SR laps were determined and tested by ROC curve analysis in a validation group (633 students), from which wai...

The aim of this study was to examine in team sports athletes the relationship between repeated sprint ability (RSA) indices and both aerobic and anaerobic fitness components. Sixteen team-sport players were included (age, 23.4 ± 2.3 years; weight, 71.2 ± 8.3 kg; height, 178 ± 7 cm; body mass index, 22.4 ± 2 kg · m(-2); estimated VO2max, 54.16 ± 3.5 mL · kg(-1) · min(-1)). Subjects were licensed...

Over the last decade increasing interest has been shown in the measurement of anaerobic power and capacity in athletic men. These physiological characteristics have been determined predominantly using cycle ergometry and treadmill sprinting. The purpose of the present study was to examine the relationship between 40-m maximal shuttle run times and performance indices obtained during treadmill s...

OBJECTIVE Maximal oxygen uptake (Vo(2max)) of 44 ml kg(-1) min(-1) is an accepted criterion (Vo(2CR)) below which health and fitness for young male adults may be compromised. New algorithms validated for Vo(2CR) screening using the 20 m multistage shuttle run test (20mMST) were developed. METHODS Vo(2max) was assessed in 110 males using a stationary gas analyser in a treadmill test (TT) and i...

The reliability of the interval shuttle run test (ISRT) as a submaximal and maximal field test to measure intermittent endurance capacity was examined. During the ISRT, participants alternately run for 30 seconds and walk for 15 seconds. The running speed is increased from 10 km.h(-1) every 90 seconds until exhaustion. Within a 2-week period, 17 intermittent sport players (i.e., 10 men and 7 wo...

The aim of the study was to investigate accuracy 20 m shuttle run test (20mSRT) for prescription high-intensity interval training (HIIT) and examine appropriate intensity, prescribed by 20mSRT end-test speed, execution HIIT. Twenty physical education students (age: 22.4 ± 0.8 years, body height: 175.7 8.9 cm, weight: 73.8 13.4 kg) participated in study. On two separate occasions participants we...