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Fulltext Postural sway and shooting accuracy of skilled recurve archers

Muhamad Noor Mohamed, Azrul Hisham Azhar

Movement Health & Exercise, 2012;1(1):49-60.
MyJurnal

Postural movements potentially affect aiming stability in archery, thus contributing to chances of inconsistent hits. According to the expertisenovice paradigm, the factor that sets winners apart from ordinary athletes is the former’s ability to control minute changes in their performance. The
present study seeks to determine the relationship between postural sway and shooting performance amongst Malaysian skilled recurve archers. Twenty one skilled Malaysian archers participated in this study, where performance level was measured by rank tournaments International Archery Federation (FITA) score. Postural sway was assessed in terms of anterior deviation (positive value) and posterior deviation (negative value) using ZEPHYR Bio-Harness. Postural sway was analysed at the following three phases; (i) setup, (ii) aiming, and (iii) release. Participants shot 12 arrows to a 30-meter target. Data yielded a significant relationship between postural sway and shooting performance. The correlation coefficients between shooting performance and postural sway value for skilled archers ranged between (r = -0.021 to 0.248) with the highest correlation recorded at the release phase, with the lowest at the aiming phase. The setup phase showed the only anterior deviation throughout the test. During the setup and release phases, correlation between postural sway with shooting performance was significantly noted (p < 0.001). Multiple regression analysis showed that postural sway during the setup and release phases were the significant indicators for shooting performance, accounting approximately 17% and 24% of the variances respectively. In sum, the results indicate that reducing postural sway
during the release phase can increase shooting performance of skilled archery athletes, thus establishing a significant relationship between the postural sway value with shooting performance of skilled archers.
Effect of knee pad on kicking a ball and gait analysis

K. Kadirgama, Z. Taha, A.R. Ismail, Azrul Hisham, A. Zulkifli, Nasrul Hadi, et al.

Movement Health & Exercise, 2013;2(1):41-46.
MyJurnal

Wearing kneepads is the best defence against occupational knee injury. It has been reported that the use of knee pads can reduce injuries and increase performance. Knee pads provide protection by disbursing pressure on the knees and preventing puncture wounds. This study focuses on the effect of knee pads on muscle activity and gait analysis. As a case study, measurement of muscle activities whilst kicking a ball was conducted. The normalized mean of the EMG data shows that the vastus lateralis and vastus medialis muscles are highly active when wearing a knee pad. Gait analysis was conducted on six subjects with and without wearing knee pad. Results shows that wearing knee pads increases the force (950 '— 1150N) acting on the ground, compared with not wearing knee pads (800 —900 N).
Detection of cardiac geometry via difference intensity of echocardiogram images

Mohd Adib MA, Yusof MF, Ahmad Z, Mohd Hasni NH

J Integr Bioinform, 2012;9(2):195.
PMID: 22781711 DOI: 10.2390/biecoll-jib-2012-195

Echocardiogram is an ultrasound image of the heart that demonstrates the size, motion and composition of cardiac structures and is also used to diagnose various abnormalities of the heart including abnormal chamber size, shape and congenital heart disease. Echocardiography provides important morphological and functional details of the heart. Most of the presented automatic cardiac disease recognition systems that use echocardiograms based on defective anatomical region detection. In this paper we present a simple technique for cardiac geometry detection via echocardiogram images which conquer these borders and exploits cues from cardiac structure. To demonstrate the effectiveness of this technique, we present results for cardiac geometry detection through difference intensity of echocardiogram images. We have developed a simple program code for the prediction of cardiac geometry using difference intensity of echocardiogram images. With this code, users can generate node or point for detection of cardiac geometry as ventricle and atrium in size, shape and location.
Fulltext Molecular surveillance of methicillin-susceptible Staphylococcus aureus (MSSA) isolated over a one-year period from a Malaysian Teaching Hospital

Sapri HF, Ismail MAH, Sani NAM, Noordin A, Tan TL, Hussin S, et al.

Germs, 2020 Jun;10(2):104-111.
PMID: 32656107 DOI: 10.18683/germs.2020.1191

Introduction: We report the results of a molecular surveillance study carried out on methicillin-susceptible Staphylococcus aureus (MSSA) isolated in a one-year duration from Hospital Canselor Tuanku Muhriz (HCTM), a tertiary hospital located in Kuala Lumpur, Malaysia.
Methods: The first strain isolated from each MSSA infection in HCTM during the year 2009 was included into the study. Antimicrobial susceptibility testing and agr group typing were carried out for all strains; virulence gene (cna, seh, TSST-1 and PVL) typing results of the strains were obtained from a previous study. Pulsed-field gel electrophoresis (PFGE) was done on selected strains from the orthopedic ward. Relationship(s) between different typing methods used in the study was investigated, where a p value of <0.05 indicated significant association between typing methods.
Results: A total of 880 MSSA strains were included into the study. The strains were generally susceptible to most antibiotics, with most of them carrying cna and agr-I (51.6%, n=454; 39.8%, n=350, respectively). A total of 17 PFGE pulsotypes were identified using an 80% similarity cut-off value, where the main pulsotype (pulsotype E) consisted of 24 isolates (23.5%). agr-III strains were found to be usually positive for both cna and seh (p<0.05). In addition, some PFGE pulsotypes were also characteristic of certain virulence genes or agr groups.
Conclusions: We did not identify a dominant MSSA clone circulating in HCTM in 2009. Nevertheless, results from this molecular surveillance will provide good baseline data for the hospital's second S. aureus surveillance planned for the year 2020.