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K C Teh

Publications and source records attributed to K C Teh.

13 recordsLinked to original sources
PubMed2006

Measuring and predicting maximal aerobic power in international-level intermittent sport athletes.

AIM: The purpose of this study was to measure actual VO2max during the multi-stage fitness test (MSFT) and to compare this with predicted values obtained using previously established, commonly used methods. We also wanted to determine a new and more accurate regression equation for the prediction of VO2max in intermittent sport athletes. METHODS: Twenty-six, elite, male, intermittent sport athletes performed the MSFT with oxygen uptake (VO2) and heart rate (HR) measured throughout. Paired t-tests were used to compare measured VO2max with predicted VO2max. Linear regression was used to determine the equation for the prediction of VO2max from the total number of shuttles completed. RESULTS: There were no differences between the two methods of predicting VO2max, however, both predicted values (53.6+/-3.9 and 51.3+/-4 mL x kg(-1) x min(-1)) were significantly lower (9.3% and 13.2%, respectively) than measured VO2max (59.1+/-6.6 mL x kg(-1) x min(-1), P < 0.001). Correlations between measured and predicted VO2max were similar for both prediction methods (r = 0.61, P = 0.013 and r = 0.68 and P = 0.004). We present a new prediction equation [Y (VO2max, mL x kg(-1) x min(-1)) = 0.38 x total number of shuttles completed +25.98] (where R = 0.69; R2 = 0.48; SEE = 4.9 mL x kg(-1) x min(-1); SEE% = 8.3) which provides a more valid method of predicting actual max in intermittent sport athletes. CONCLUSIONS: A new regression equation to predict VO2max in intermittent sport athletes has been established. Whilst some error in predicting VO2max still exists, the new equation will provide coaches and sport-scientists with a more suitable equation with which to predict VO2max in intermittent sport athletes.

Adolescent↗
PubMed2005

Measured maximal oxygen uptake in a multi-stage shuttle test and treadmill-run test in trained athletes.

AIM: The aims of the study were: i) to compare the measured maximal oxygen uptake (MVO2max) during the 20 m multi-stage shuttle test (MST) with MVO2max during an incremental treadmill-run test (TRT), and ii) to establish the reliability of MVO2max during MST, in trained athletes. METHODS EXPERIMENTAL DESIGN: 8 well-trained endurance-athletes (END) and 8 athletes involved in team games (GAM) performed the MST twice (i.e. MST1 and MST2) and the TRT once, in 3 separate sessions. MEASURES: MVO2maxx attained in the MST and TRT was measured using a portable respiratory analyser (model K4 RQ, Cosmed). RESULTS: MVO2max attained in the MST and TRT were significantly different for the END athletes (4.1+/-0.28 vs 4.45+/-0.31 Lxmin-1, P<0.05) but not for GAM athletes (4.01+/-0.51 vs 4.1+/-0.59 Lxmin-1, P>0.05). The 95% limits of agreement for MVO2max in the MST in Lxmin-1 were -0.67 to 0.27. MVO2max in MST1 and MST2 were not significantly different for END athletes (4.18+/-0.39 vs 4.1+/-0.28 Lxmin-1, P>0.05) and GAM athletes (4.01+/-0.55 vs 4.01+/-0.51 Lxmin-1, P>0.05). Reliability indicators for MVO2max in Lxmin-1 for MST test-retest were: typical error (TE)=0.14, coefficient of variation (CV)=3.5 and intra-class correlation (ICC)=0.90. CONCLUSION: MVO2max in the MST was lower than that measured in the TRT for the END athletes but not for the GAM athletes. Sport-specificity was an important consideration, especially when testing END athletes for VO2max. MVO2max in the MST showed acceptable levels of reproducibility.

Adult↗
PubMed2004

Exercise as medicine.

Explore the source record for details and available documents.

Diabetes Mellitus, Type 2↗
PubMed2004

Physical activity patterns of Singaporeans in 2001.

INTRODUCTION: This study was conducted on Singaporean males and females to determine the extent of involvement in sport, work-based and home-based physical activities, and other activities such as walking and stairclimbing. METHODS: A Physical Activity Questionnaire was designed and data collected in conjunction with the Singapore National Sports Participation Survey 2001. RESULTS: Three hundred and ten households with 605 respondents (287 males and 318 females) completed the questionnaire, representing a response rate of 81 percent. Males spent more time doing sports, work-based physical activity and walking and stairclimbing activities while females spent more time in housework. However, females spent more time (568 versus 410 minutes per week) on overall physical activity, mainly due to their heavier involvement in housework. Compared with a similar study in 1997, males and females were doing more sports activities and walking and stairclimbing activities, but had reduced involvement in work-based and home-based activities. Overall, respondents in 2001 were spending about 31 percent less time (457 versus 598 minutes per week) on physical activities than respondents in 1997. There was a reduction in physical activities among males from 476 minutes per week to 410 minutes per week, and a sharper drop among females from 904 minutes per week to 567 minutes per week. CONCLUSION: Singaporean males and females in 2001 are spending less time on overall physical activities. The trend towards a reduction in overall physical activities from 1997 to 2001 is cause for concern. Relevant organisations would, therefore, need to continue promoting sports and physical activities to the Singapore population.

Adult↗
PubMed2002

Aerobic demands of the dance simulation game.

The purpose of this study was to assess the intensity and energy cost of dance simulation in relation to the American College of Sports Medicine (ACSM) recommendations on the quantity and quality of exercise for developing and maintaining cardiorespiratory fitness, and to assess its safety. Forty subjects (21 males and 19 females, age 17.5 +/- 0.7 years) had their heart rate (HR) and oxygen consumption (.VO(2)) measured during maximal treadmill exercise and during a dance simulation game at a self-selected level of difficulty. They were monitored for injuries during and after the study. The results showed a mean HR of 137 beats x min(-1) (139 beats x min(-1) for males and 136 beats x min(-1) for females) and a mean .VO(2) of 24.6 ml x kg(-1) x min(-1) (25.3 ml x kg(-1) x min(-1) for males and 23.8 ml x kg(-1) x min(-1) for females) during the dance simulation game test, with an estimated energy expenditure of 480 W (550 W for males and 410 W for females). The dance intensity only just meets the minimum ACSM guidelines, so dancer-players will need to play for extended periods to improve or maintain cardiorespiratory fitness or to lose weight. No injuries occurred during 201 hours of dance time.

Adolescent↗
PubMed2002

Physiological characteristics of Singapore national water polo team players.

BACKGROUND: The purpose of this study is to describe the physiological characteristics of members of the Singapore national water polo team. METHODS EXPERIMENTAL DESIGN: a descriptive study on the physiological characteristics of members of a winning water polo team. SETTING: the study was conducted at the Sports Medicine and Research Centre. PARTICIPANTS: 13 male players (22.5+/-7.2 yrs; 178.5+/-3.9 cm and 71.0+/-8.4 kg). MEASURES: players completed body fat measurements, a submaximal cycling test to determine aerobic fitness and all-out maximal efforts (of arm-cranking and cycling) for 10 and 30 sec duration to determine anaerobic peak power, alactic and lactic acid work capacity for the upper and lower body. RESULTS: The physical measurements were compared with data of national players of various countries. The exercise test results were compared with available published data. CONCLUSIONS: Compared with elite water polo players from other countries, the Singapore water polo players are smaller in stature with a lower body mass. Relative to the limited published data, they are shown to possess a high level of aerobic fitness and anaerobic power and capacity for short-term work.

Adolescent↗
PubMed2001

Grip strength measurement in competitive ten-pin bowlers.

BACKGROUND: In an attempt to find a more specific grip strength test for bowlers, the conventional grip strength test was modified such that only the fingers used in holding the ball are tested. The objective of this study was to assess the test-retest reliability of this modified bowling grip strength test, to assess the agreement between the bowling and the conventional grip strength tests, and to examine the correlation between the modified test and bowling performance in competitive bowlers. METHODS. EXPERIMENTAL DESIGN: This research was conducted in two parts, each with a different study sample. Study I was a cross-sectional study to assess the correlation between the bowling grip strength and the bowling score. Study II was a comparative study to obtain the test-retest reliability for both the bowling and conventional grip strength tests, and to assess the agreement between the two tests. SETTING AND SUBJECTS: for study I, the subjects were 39 members (26 males and 13 females) of the Singapore National Ten-Pin Bowling Training Squad. Bowling grip strength was measured within one month prior to the selection trials for the national squad, the results of which were used as a measure of bowling performance. For study II, the subjects were 21 members (12 males and 9 females) of the Singapore National Ten-Pin Bowling Squad that was formed after the selection trials. INTERVENTIONS: none. MEASURES: Bowling grip strength, conventional grip strength, and bowling score. RESULTS: The test-retest reliability of the bowling grip strength measurement (r = 0.91, p < 0.01) was comparable to that of the conventional five-finger grip (r = 0.93, p < 0.01). The single measure intraclass correlation coefficient between the bowling and conventional grip strength tests was 0.77; the 95% confidence interval was 0.51 and 0.90. However, the correlation coefficient between the bowling grip strength test and bowling score (r = 0.27) was not significant. CONCLUSIONS: The bowling grip strength test has a high test-retest reliability, and a moderate agreement with the conventional grip strength test. However, despite using only the bowling fingers, the test was unable to predict bowling performance in elite bowlers.

Adolescent↗
PubMed2000

The relationship between maximal oxygen uptake and repeated sprint performance indices in field hockey and soccer players.

BACKGROUND: The purpose of this study was to examine the relationship between maximal oxygen uptake and repeated sprint performance in field hockey and soccer players. METHODS EXPERIMENTAL DESIGN: a descriptive study on the aerobic-anaerobic performance of intermittent team game players. SETTING: the study was conducted at the Sports Medicine and Research Centre. PARTICIPANTS: forty male national team game players (22.6+/-4.2 years; 1.73+/-0.07 m and 63.7+/-6.2 kg) were involved in the study. MEASURES: all subjects completed a treadmill run test to exhaustion to determine maximal oxygen uptake and 8x40 m sprints either on the field or running track to determine repeated sprint ability performance. RESULTS: Body mass-normalised maximal oxygen uptake of 58.0+/-4.9 ml x kg(-1) x min(-1) of the group is comparable to values reported in the literature for team game players. No significant correlations were established between the fastest 40 m sprint time and maximal oxygen uptake (r=-0.21 and -0.08, p>0.05). Moderate correlations were established between maximal oxygen uptake and total time for the eight sprints (r=-0.346 and -0.323; p<0.05). CONCLUSIONS: Maximal oxygen uptake was not correlated with the fastest 40 m sprint time but was moderately correlated with total sprint time. Since the shared variance between maximal oxygen uptake and total sprint time was only 12%, improving aerobic fitness further will only be expected to contribute marginally to improving repeated sprint performance of the team game players. It remains possible that a high level of aerobic fitness enhances other aspects of match play in games like soccer and hockey.

Adult↗
PubMed2000

A stair-climb test of cardiorespiratory fitness for Singapore.

OBJECTIVE: The purpose of this study was to develop a stair-climb test of cardiorespiratory fitness for adult Singaporeans, particularly those staying in Singapore Housing and Development Board (HDB) flats. METHOD: 103 subjects [56 males, of mean (SD) age 44.8 (13.9) years and Body Mass Index, or BMI, 23.3 (3.2); and 47 females, of age 43.2 (12.9) years and BMI 21.9 (2.8)] were first assessed for their cardiorespiratory fitness, measured using maximal oxygen uptake (or VO2max) on a treadmill, before undergoing a stair-climb test up to the 12th storey (11 floors) of a typical HDB flat (180 steps, vertical height 27.0 metres). RESULTS: The mean (SD) time taken for the climb (CT) and heart rate at the end of the climb (HRend) averaged 111.3 (16) seconds and 154.4 (13.4) beats.min-1 respectively for males, and 121.0 (18.1) seconds and 164.6 (15.7) beats.min-1 respectively for females. Regression equations were developed to predict VO2max from age (years), BMI, CT (seconds), HRend (beats.min-1): For males: VO2max (ml.kg-1.min-1) = 133 - 0.273 (Age) - 0.672 (BMI) - 0.236 (CT) - 0.232 (HRend). For females: VO2max (ml.kg-1.min-1) = 66.69 - 0.135 (Age) - 0.249 (BMI) - 0.128 (CT) - 0.021 (HRend). Validation of the regression equations conducted on a different sample consisting of 18 subjects (11 male and 7 female) showed significant correlations between the predicted and directly measured VO2max (males, r = 0.81 and females, r = 0.90; p < 0.01). There were no significant differences between the means of predicted and directly measured VO2max. CONCLUSION: A stair-climb test using HDB stairs was developed which was able to estimate cardiorespiratory fitness with reasonable accuracy.

Adult↗
PubMed1992

The role of the Singapore Sports Council in coronary artery disease prevention.

The Singapore Sports Council (SSC) is a statutory board (government body) which was set up in 1973. Its main responsibility is to implement the "SPORTS FOR ALL" policy of the Singapore Government. Physical activity has been found to be an important factor in coronary artery disease prevention. It is through its "SPORTS FOR ALL" policy, by promoting physical activity to all Singaporeans, that the SSC helps in coronary artery disease prevention. The SSC promotes physical activities (and sports) by providing facilities, running fitness schemes, organising instructional schemes for sports, sports training schemes and sports activities. The facilities available to the public include swimming pools, stadia with running tracks and playing fields, tennis courts, squash courts and badminton courts. A 1987 national survey showed that 28.3% of the population aged 15 and above engaged in sports one or more times a week. Those who exercised three or more times a week accounted for only 7.9%. The SSC will continue in its efforts to improve this rate of physical activity in the population, with coronary artery disease prevention as one of its main objectives.

Coronary Disease↗
PubMed1983

Some possible benefits and dangers of non-aerobic exercise in cardiac rehabilitation programmes.

This paper reviews several recent studies on the possible benefits and dangers of non-aerobic exercises in cardiac rehabilitation programmes. It presents the case for including in such programmes, exercises which specifically improve components of overall physical fitness other than aerobic or cardiorespiratory endurance fitness. This is because many of these other components of overall physical fitness are required in the daily lives of patients in cardiac rehabilitation programmes and can best be acquired through non-aerobic exercises. These non-aerobic exercises include judicious callisthenic and isometric exercises to specifically improve on joint flexibility, agility, muscular strength, muscular endurance and coordination.

Coronary Disease↗