Kuala Lumpur, Malaysia
Kuala Lumpur, Malaysia

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PubMed | Volodalen Compagny, University of Franche Comte and National Sports Institute of Malaysia
Type: Journal Article | Journal: International journal of sports medicine | Year: 2016

Biomechanical parameters are often analyzed independently, although running gait is a dynamic system wherein changes in one parameter are likely to affect another. Accordingly, the Volodalen method provides a model for classifying running patterns into 2 categories, aerial and terrestrial, using a global subjective rating scoring system. We aimed to validate the Volodalen method by verifying whether the aerial and terrestrial patterns, defined subjectively by a running coach, were associated with distinct objectively-measured biomechanical parameters. The running patterns of 91 individuals were assessed subjectively using the Volodalen method by an expert running coach during a 10-min running warm-up. Biomechanical parameters were measured objectively using the OptojumpNext during a 50-m run performed at 3.3, 4.2, and 5ms(-1) and were compared between aerial- and terrestrial-classified subjects. Longer contact times and greater leg compression were observed in the terrestrial compared to the aerial runners. The aerial runners exhibited longer flight time, greater center of mass displacement, maximum vertical force and leg stiffness than the terrestrial ones. The subjective categorization of running patterns was associated with distinct objectively-quantified biomechanical parameters. Our results suggest that a subjective holistic assessment of running patterns provides insight into the biomechanics of running gaits of individuals.


Croft H.,Institute of Sport and Adventure | Suwarganda E.K.,National Sports Institute of Malaysia | Syed Omar S.F.,National Sports Institute of Malaysia
Sports Technology | Year: 2013

The use of player-mounted cameras (PMCs) in sport is not new; however, most existing PMC devices do not have the ability to transmit footage as it is captured. This appears to be due to the size and cost of transmitters, batteries and aerials. Instead, the footage is normally stored locally (within the device) on a hard drive or a removable secure digital card. Due to this limitation, PMC devices are not often utilized for coaching feedback, as there is significant delay before being able to view the footage. This paper will describe the development of a novel, non-intrusive PMC that transmits player vantage point footage in real time, captured to a viewing laptop for immediate review by coaches and players. Applications of this technology to rugby union, karate and silat (a South-East Asian martial art) will be described, outlining how the coaches utilize the technology to demonstrate important visual cues to players for the improvement of decision-making. Finally, the strengths and limitation of this technology will be discussed with recommendations for future development. © 2013 Copyright Taylor and Francis Group, LLC.


Yeo W.K.,RMIT University | Yeo W.K.,National Sports Institute of Malaysia | Carey A.L.,RMIT University | Carey A.L.,Baker IDI Heart and Diabetes Institute | And 3 more authors.
Applied Physiology, Nutrition and Metabolism | Year: 2011

The performance of prolonged (>90 min), continuous, endurance exercise is limited by endogenous carbohydrate (CHO) stores. Accordingly, for many decades, sports nutritionists and exercise physiologists have proposed a number of diet-training strategies that have the potential to increase fatty acid availability and rates of lipid oxidation and thereby attenuate the rate of glycogen utilization during exercise. Because the acute ingestion of exogenous substrates (primarily CHO) during exercise has little effect on the rates of muscle glycogenolysis, recent studies have focused on short-term (<1-2 weeks) diet-training interventions that increase endogenous substrate stores (i.e., muscle glycogen and lipids) and alter patterns of substrate utilization during exercise. One such strategy is "fat adaptation", an intervention in which welltrained endurance athletes consume a high-fat, low-CHO diet for up to 2 weeks while undertaking their normal training and then immediately follow this by CHO restoration (consuming a high-CHO diet and tapering for 1-3 days before a major endurance event). Compared with an isoenergetic CHO diet for the same intervention period, this "dietary periodization" protocol increases the rate of whole-body and muscle fat oxidation while attenuating the rate of muscle glycogenolysis during submaximal exercise. Of note is that these metabolic perturbations favouring the oxidation of fat persist even in the face of restored endogenous CHO stores and increased exogenous CHO availability. Here we review the current knowledge of some of the potential mechanisms by which skeletal muscle sustains high rates of fat oxidation in the face of high exogenous and endogenous CHO availability.


Lan M.F.,National Sports Institute of Malaysia | Lane A.M.,University of Wolverhampton | Roy J.,National Sports Institute of Malaysia | Hanin N.A.,National Sports Institute of Malaysia
Journal of Sports Science and Medicine | Year: 2012

The aim of the present study was to investigate the factorial validity of the Brunel Mood Scale for use with Malaysian athletes. Athletes (N = 1485 athletes) competing at the Malaysian Games completed the Brunel of Mood Scale (BRUMS). Confirmatory Factor Analysis (CFA) results indicated a Confirmatory Fit Index (CFI) of 90 and Root Mean Squared Error of Approximation (RMSEA) was 0.05. The CFI was below the 0.95 criterion for acceptability and the RMSEA value was within the limits for acceptability suggested by Hu and Bentler (1999). We suggest that results provide some support for validity of the BRUMS for use with Malaysian athletes. Given the large sample size used in the present study, descriptive statistics could be used as normative data for Malaysian athletes. © Journal of Sports Science and Medicine.


Roy J.,National Sports Institute of Malaysia | Hwa O.C.,National Sports Institute of Malaysia | Singh R.,Universiti Sains Malaysia | Aziz A.R.,Singapore Sports Institute | Jin C.W.,National Sports Institute of Malaysia
Journal of Sports Science and Medicine | Year: 2011

The study explored the self-generated coping strategies employed by Muslim athletes from South East Asian region during the Ramadan fasting month. Sixty-five National elite Muslim athletes responded to an open-ended question on coping strategies employed during Ramadan fasting. Inductive content analysis identified five general dimensions from 54 meaning units which were abstracted into 14 first-order themes and 10 second order themes. The general dimension included four problemfocused coping: training modifications, dietary habits, psychological, rest and recovery, and one emotion-focused coping i.e., self- control. The coping strategies employed were diverse and dynamic in nature and no specific pattern was evident. The most frequently employed strategies were associated with training and dietary habits. Emotion focused coping was the least frequently used by the athletes. ©Journal of Sports Science and Medicine.


Nadarajan V.S.,University of Malaya | Ooi C.H.,National Sports Institute of Malaysia | Sthaneshwar P.,University of Malaya | Thompson M.W.,National Sports Institute of Malaysia | Thompson M.W.,University of Sydney
International Journal of Laboratory Hematology | Year: 2010

Altitude training is sometimes employed by elite endurance athletes to improve their sea level performance. This improvement results from the increased red cell mass consequent upon the boost in erythropoietin (EPO) level that occurs as a response to the relatively hypoxic environment at high altitudes. We measured serum EPO levels together with various red cell and reticulocyte parameters including immature reticulocyte fraction (IRF) in eight national track-endurance cyclists, resident at sea-level, prior to and upon return from an altitude of approximately 1905 m. Reticulocytes and soluble transferrin receptor (sTfR) were significantly increased with reduction in ferritin levels immediately on return from high altitude indicating increased erythropoietic activity. IRF in particular showed a significant peak immediately on return but decline to sub-baseline levels by day 9, and recovery to baseline by day 16. Our results indicate that IRF is a sensitive marker of erythropoietic status in athletes undergoing altitude training and subsequent loss of EPO stimuli on return to sea level. © 2009 Blackwell Publishing Ltd, Int.


Taha Z.,Universiti Malaysia Pahang | Hassan M.S.S.,Universiti Malaysia Pahang | Yap H.J.,University of Malaya | Yeo W.K.,National Sports Institute of Malaysia
Procedia Engineering | Year: 2016

Badminton is a sport that combines several different physical aspects. At a professional level, the sport demands excellent fitness criteria namely the player's aerobic stamina, agility, strength, speed as well as precision. This study fundamentally entails the development of an innovative training system that incorporates technology that could improve the athlete's performance. Although existing motion tracking technology can provide reliable and accurate tracking results, nonetheless, the product cost and complexity keeps them away from being employed in most sports. This investigation involves the comparison between Kinect Technology and inertial measurement unit (IMU). The kinematic movement of the arm from wrist until shoulder was observed in this study for the purpose of investigating the difference between the acceleration of skeleton detected by the Kinect motion tracking and a low-cost IMU. The results obtained were found to be promising, and it is important in enabling pattern recognition of different badminton strokes in the next stage of the study. The movement of the right-hand wrist is tracked by Microsoft Kinect that can track the skeleton of the player whilst the IMU that measures the acceleration is attached at the right-hand wrist. Although the acceleration of the wrist may readily be obtained from the IMU, the acceleration from Kinect may only be obtained through mathematical manipulation. It was found that the accelerations of the upper limb movement from both IMU and Kinect demonstrated good agreement. © 2016 The Authors. Published by Elsevier Ltd.


Hamid M.S.A.,University of Malaya | Hamid M.S.A.,National Sports Institute of Malaysia | Mohamed Ali M.R.,University of Malaya | Yusof A.,University of Malaya | George J.,University of Malaya
BMC Musculoskeletal Disorders | Year: 2012

Background: Muscle injuries are one of the commonest injuries affecting athletes. It often leads to significant pain and disability causing loss of training and competition time. With current treatment, the duration to return-to-play ranges form six weeks to never, depending on injury severity. Recent researches have suggested that autologous platelet-rich plasma (PRP) injection into the injured site may hasten soft tissues healing. To-date, there has been no randomised clinical trials to evaluate the effects of PRP on muscle healing. The aim of this study is to examine the effects of autologous PRP on duration to return-to-play after muscle injury. Methods and design. A randomised, single blind controlled trial will be conducted. Twenty-eight patients aged 18years and above with a recent grade-2 hamstring injury will be invited to take part. Participants will be randomised to receive either autologous PRP injection with rehabilitation programme, or rehabilitation programme only. Participants will be followed up at day three of study and then weekly for 16weeks. At each follow up visit, participants will be assessed on readiness to return-to-play using a set of criteria. The primary end-point is when participants have fulfilled the return-to-play criteria or end of 16weeks. The main outcome measure of this study is the duration to return-to-play after injury. Conclusion: This study protocol proposes a rigorous and potential significant evaluation of PRP use for grade-2 hamstring injury. If proven effective such findings could be of great benefit for patients with similar injuries. Trial registration. Current Controlled Trials ISCRTN66528592. © 2012 A Hamid et al.; licensee BioMed Central Ltd.


PubMed | National Sports Institute of Malaysia
Type: Journal Article | Journal: Journal of sport rehabilitation | Year: 2016

The Unexpected-Disturbance Program (UDP) promotes exercises in response to so-called involuntary short- to midlatency disturbances.This study investigated the effectiveness of the UDP in the last 6 wk of rehabilitation.Pre-post study with 2-tailed paired t tests for limited a priori comparisons to examine differences.National Sports Institute of Malaysia.24 Malaysian national athletes.7 sessions/wk of 90 min with 3 sessions allocated for 5 or 6 UDP exercises.Significant improvements for men and women were noted. Tests included 20-m sprint, 1-repetition-maximum single-leg press, standing long jump, single-leg sway, and a psychological questionnaire.For men and women, respectively, average strength improvements of 22% (d = 0.96) and 29% (d = 1.05), sprint time of 3% (d = 1.06) and 4% (d = 0.58), and distance jumped of 4% (d = 0.59) and 6% (d = 0.47) were noted. In addition, athletes reported improved perceived confidence in their abilities. All athletes improved in each functional test except for long jump in 2 of the athletes. Mediolateral sway decreased in 18 of the 22 athletes for the injured limb.The prevention training with UDP resulted in improved conditioning and seems to decrease mediolateral sway.


PubMed | National Sports Institute of Malaysia
Type: Journal Article | Journal: Journal of sport rehabilitation | Year: 2016

The Unexpected-Disturbance Program (UDP) promotes exercises in response to so-called involuntary short- to midlatency disturbances.This study investigated the effectiveness of the UDP in the last 6 wk of rehabilitation.Pre-post study with 2-tailed paired t tests for limited a priori comparisons to examine differences.National Sports Institute of Malaysia.24 Malaysian national athletes.7 sessions/wk of 90 min with 3 sessions allocated for 5 or 6 UDP exercises.Significant improvements for men and women were noted. Tests included 20-m sprint, 1-repetition-maximum single-leg press, standing long jump, single-leg sway, and a psychological questionnaire.For men and women, respectively, average strength improvements of 22% (d = 0.96) and 29% (d = 1.05), sprint time of 3% (d = 1.06) and 4% (d = 0.58), and distance jumped of 4% (d = 0.59) and 6% (d = 0.47) were noted. In addition, athletes reported improved perceived confidence in their abilities. All athletes improved in each functional test except for long jump in 2 of the athletes. Mediolateral sway decreased in 18 of the 22 athletes for the injured limb.The prevention training with UDP resulted in improved conditioning and seems to decrease mediolateral sway.

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