1.A Comparison Study For The Road Condition With Hand Grip Force And Muscle Fatigue
Seri Rahayu ; Mohammad Firdaus ; MohdFa’iz
Malaysian Journal of Public Health Medicine 2016;Special Volume(1):7-13
The purpose of this study is to compare the road conditions (straight road, winding road and hill road) with the hand grip pressure force and muscle fatigue for male and female drivers. Ten subjects were participated in this study. The force measurement and electromyography (EMG) responses were taken and evaluated by using the tactile grip and pressure measurement (Grip System) and Electromyography (EMG) device. The result indicated that the winding road produced more muscle fatigue and high hand grip pressure force compared than downhill road, hill up road, and straight road for both male and female subjects. The result compared the muscle fatigue and hand grip pressure force between the first 15 minutes and last 15 minutes of driving activity. The muscle fatigue increasingly high for the last 15 minutes compared to first 15 minutes. However, the hand grip pressure forces become high during the winding road for first 15 minutes of driving session. The muscle fatigue become high as the hand grip pressure force value is high. Furthermore, the male drivers exert higher hand grip pressure force and higher muscle fatigue compared to female drivers. This study can be used as a guideline for the future studies, primarily in solving the driving fatigue problem among the Malaysian’s drivers. The method of this study could also be used for early detection of driver fatigue issues. Indirectly, the findings could reduce the number of car accidents in Malaysia.
2.The Beck Anxiety Inventory for Malays (BAI-Malay): A Preliminary Study on Psychometric Properties
Malaysian Journal of Medicine and Health Sciences 2011;7(1):75-82
Introduction: The purpose of the present study was to investigate exploratory factor analysis of the
Beck Anxiety Inventory (BAI) and reports its reliability and validity in Malaysia. Method: One thousand
and ninety participants from four different samples (namely students, general population, medical and
psychiatric patients) completed the Malay version of Beck Anxiety Inventory, as well as additional
questionnaires such as Fear Questionnaire, Anxiety Sensitivity Index, Depression Anxiety Stress Scale,
and Catastrophic Cognition Questionnaire. Results: Exploratory factor analysis revealed a three factor
solution and accounted for 48.01% of the total variance. The three-factor structure appeared to be;
subjective anxiety, autonomic, and neurophysiology. The Cronbach alpha coefficients (α) ranged from
0.66 to 0.89 with satisfactory overall alpha value (.91). Evidence was also found acceptable concurrent
validity of the BAI-Malay (range between r=.22 to r=.67). Conclusion: This study shows that the BAIMalay
is a reliable and valid instrument to measure symptoms of anxiety in the Malay population
and can be used in research and clinical service in Malaysia. However, replication of study by using
confirmatory factor analysis and application of the instrument among anxiety patients worth of further
investigation.
3.Relationship Among Depression, Self-efficacy, and Quality of Life Amoong Students in Medical and Allied Health Sciences.
Firdaus Mukhtar ; Hairul Anuar Hashim
Malaysian Journal of Medicine and Health Sciences 2010;6(2):51-58
Introduction: This study examined a cognitive model of depression among undergraduate students of medical and allied health sciences. Methods: Participants (N=279) completed a series of questionnaires related to depression (Beck Depression Inventory-Malay), negative cognitions (Automatic Thoughts Questionnaire-Malay), dysfunctional attitude (Dysfunctional Attitude Scale-Malay), stressful life events (Life Events Survey), self-efficacy (General Self-Efficacy) and quality of life (WHO Quality of Life-BREF). Results: Results of descriptive analysis revealed a higher percentage of severe depression among males when compared to female students. Results of structural equation modeling indicated an adequate fit of the model (X²=21.29, df=15, p>13; GFI=0.97; CFI=0.97; RMSEA=0.4). Conclusion: The findings also indicated the potential roles of self-efficacy in mediating depression. The results are discussed in terms of self-regulating strategies of managing depression and the roles that university authorities may play in helping students to regulate depression.
4.Knowledge on Sexual and Reproductive Health among Adolescents in a College at Seremban, Negeri Sembilan
Muhammad Firdaus Ujang ; Rosnah Sutan
International Journal of Public Health Research 2014;4(2):501-509
Prevalence of adolescents involved in sexual and reproductive problems is on rise and it was associated with its knowledge. Several factors found to be associated with the knowledge and various sources of knowledge are chosen by adolescents for this information. Thus, this study was to determine the knowledge score, its influencing factors and the preference of the sources of knowledge. A cross-sectional study was done using adopted questionnaire involving 330 respondents aged 18 and 19 years old in Kolej MARA Seremban selected by simple random sampling. They were gathered in the halls and 338 adolescents from 454 students consented to involve in this study. Self-administered questionnaire was used whereby a correct response was given a score of 2, 0 for an incorrect response and 1 for an answer of don’t know. Total score for all correct answers was 42. Descriptive analysis, bivariate and multivariate analysis was done in the analysis. The mean knowledge score was 37.32 (±2.967) with a significant difference for gender. Internets were the most common and preferred sources of the knowledge among them. There was 5.2% of them had heard on SMS intervention and 37.0% of them disagreed on SMS intervention. The result showed that the knowledge score was lower in males than females and internets were the most preferred source of the knowledge. Thus, interventions for knowledge improvement should be more on male adolescents.
Reproductive Health
;
Sex Education
;
Adolescent
;
Knowledge
5.Antioxidant and cytotoxic activity of Acanthus ilicifolius flower
Firdaus Muhamad ; Prihanto Awaludin Asep ; Nurdiani Rahmi
Asian Pacific Journal of Tropical Biomedicine 2013;(1):17-21
Objective: To investigate the antioxidant and cytotoxic activity of the flower of Acanthus ilicifolius (A. ilicifolius). Methods: Antioxidant activity was determined as antiradical efficiency with diphenyl picrylhydrazil (DPPH) method and cytotoxic assay was undertaken using brine shrimp lethal toxicity test. Results: A. ilicifolius flower contained terpenoid, phenolic compounds, and alkaloid. The methanol extract of A. ilicifolius flower showed the highest antiradical efficiency (AE=1.41í10-3) against DPPH radicals and the highest cytotoxicity (LC50=22 μg/mL) against brine shrimp nauplii. Conclusions: It is suggested that active compounds of A. ilicifolius flower solved in methanol play a role to inhibit free radical activity and kill Artemia salina nauplii. The substances can be considered as potential antioxidant and cytotoxic agents as well as imminent candidate for cancer therapy.
6.Sudden cardiac death.
Firdaus Abd. Rahim ; Yap Yee Guan
Malaysian Journal of Medicine and Health Sciences 2008;4(2):1-10
Sudden cardiac death (SCD) continues to be a major health issue in many countries including Malaysia due to its large magnitude in all-cause mortality as well as the emotional and socioeconomic impact of the deceased leaving the love ones behind in an abrupt manner. Data in Malaysia shows that the majority of sudden natural deaths are due to sudden cardiac death and are in the productive age group of 41 to 50 years. A study in Germany pointed out that about 90% people who died of SCD actually had warning signs such as chest pain, breathlessness, nausea, vomiting, dizziness and fainting before they collapsed. The majority belonged to the high-risk group for SCD having had previous medical histories including coronary artery disease, cardiomyopathies, valvular heart disease, congenital heart disease, underlying electrophysiological abnormalities or are taking drugs which are capable of provoking ventricular tachyarrhythmias. The key step is to define a sequence of risk stratifiers that will identify patients who are at risk but in whom implantation of expensive devices will be cost-effective. Amongst the investigative tools proven to be helpful to achieve this are ECG screening for left ventricular hypertrophy, increased QRS width, T-wave alternans, heart rate variability, baroreceptor responsiveness, QT dispersion, and T-wave heterogeneity; Holter monitoring to demonstrate ventricular arrhythmias; and stress test in identifying ischaemia. Prompt action is crucial since restoring circulation as fast as possible improves the chances of survival. Family members and caregivers of people with heart disease and at increased risk should be trained to recognize symptoms and perform cardiopulmonary resuscitation (CPR) to reduce the likelihood of death from cardiac arrest. Training and prevention efforts should focus on how to recognize the emergency, CPR training, and automated external defibrillator (AED) use. An implantable cardioverter-defibrillator (ICD) is the preferred therapeutic modality in most survivors of SCD. The incidence of SCD can be reduced by improving the current situation through selection of high risk groups for initiation of therapies, education to the public awareness of early warning symptoms and early emergency management that should be readily available in the community.
Anemia, Sickle Cell
;
Death, Sudden, Cardiac
;
Risk
;
Cardiopulmonary Resuscitation
;
symptoms <1>
7.Effectiveness of Group Cognitive Behaviour Therapy Augmentation In Reducing Negative Cognitions In The Treatment Of Depression In Malaysia
Firdaus Mukhtar ; Tian PS Oei ; Mohd Jamil Mohd Yaacob
ASEAN Journal of Psychiatry 2011;12(1):1-16
Objective: Cognitive Behaviour Therapy (CBT) for depression is popular in Western countries. In the context of Malaysia, CBT has been applied as an individual session in a clinical setting. However, there is limited research in the area of group CBT for depression among Malays. The aim of this study is to investigate the effectiveness of Group Cognitive Behavioural Therapy (GCBT) in reducing the negative cognitions that are related to depression in a group of Malay patients. Methods: One hundred and thirteen patients, diagnosed with depression, were randomly allocated to either a Treatment As Usual (TAU) group (n = 55), or a TAU plus GCBT group (n = 58). All participants completed two questionnaires that measured maladaptive cognitions at pre-treatment, midway through treatment, post-treatment (week 4), and at follow-ups after three (week 16) and six months (week 28). Results: The TAU+GCBT patients improved significantly more, and at a faster rate, than the TAU group; which showed minimal improvement. The effect size (Cohen’s d) of the treatment group was 0.93 and 96.55% of the treatment group achieved a clinically significant change. Conclusions: The findings suggest that GCBT, when used in addition to the TAU, is effective in reducing negative thoughts and maladaptive attitudes of Malaysian patients suffering from depression.
8.A Study Of Psychophysical Factor (Heart Rate) For Driver Fatigue Using Regression Model
Mohammad Firdaus A ; Seri Rahayu K ; Mohamad M ; RuzyHaryati H ; Kalthom Husain
Malaysian Journal of Public Health Medicine 2018;18(Special Volume (2)):1-9
Driving activity has become more important as this medium being practical, it is also cheaper and faster in connecting human from one to another place. However, in some occurrence, it can cause accidents as they become fatigued while driving. Driver fatigue is one of the top contributors to the road accidents and can be dangerous as other road safety issues such as drink driving. Worst is, there are no laws regulating driver fatigue. Therefore, the main purpose of this study is to develop the regression model of apsychophysical factor for drivers’ fatigue which can predict the relationship between the process input parameters and output responses. The study was participated by ten subjects. The heart rate was taken and recorded using heart rate monitor. Design Expert 8.0.6 software was used for the regression analysis. The modeling validation runs werewithin the 90% prediction intervals of the developed model and the residual errors were less than 10%. The R 2 value is 0.9400 whichmeans that the linear regression line passed exactly through all points. The significant parameters that influenced the heart rate were also identified.The parameters are time exposure, type of road, and gender.
Psychophysical
;
fatigue
;
regression modeling
;
heart rate
9.Evaluation of Antiinflammatory, Antioxidant and Antiproliferative Activities of Quassia borneensis Noot. (Simaroubaceae) Extracts
Firdaus Kamarulzaman ; Julenah Ag Nuddin ; Kai Li Lim ; Aishah Adam ; Ahmad Sazali Hamzah ; Ahmad Rohi Ghazali
Malaysian Journal of Health Sciences 2017;15(1):33-40
Quassia borneensis has been traditionally used as antihypertensive agent without any scientific literature on its mechanism of action. The objective of this study was to evaluate the antiinflammatory, antioxidant and antiproliferation properties of Q. borneensis extracts. The hexane, chloroform and aqueous extracts of root and bark of Q. borneensis were subjected to nitric oxide (NO) inhibition assay in LPS-stimulated RAW 264.7 cells. Expression of inducible NO synthase (iNOS) protein level was analyzed by Western blot. The antioxidant and antiproliferative activities of the extracts on HL-60 cells were determined using Ferric Reducing Antioxidant Power (FRAP) and MTT assays, respectively. The chloroform extract of Q. borneensis root obtained by soxhlet method (CSR) significantly inhibited 97.64 ± 0.96% of NO production (p < 0.001) and suppressed iNOS expression (p < 0.05) at the highest concentration of 1.0 μg/ml. The chloroform extract of bark obtained by maceration (CMB) exhibited the highest antioxidant capacity in the absence and presence of HL-60 cells, where the FRAP value were 125.45 ± 9.10 μM FeSO4.7H2O and 181.55 ± 3.45 μM FeSO4.7H2O, respectively. The greatest inhibition of HL-60 cell proliferation was exhibited by the chloroform extract of bark obtained by soxhlet method (CSB) with the IC50 of 5.0 μg/ml. The findings suggested that the chloroform extracts of Q. borneensis possess antiinflammatory, antioxidant and antiproliferative activities.
10.Present Status and Future Concerns of Expanded Newborn Screening in Malaysia: Sustainability, Challenges and Perspectives
Yin Hui Leong ; Chee Yuen Gan ; Mohd Adi Firdaus Tan ; Mohamed Isa Abdul Majid
Malaysian Journal of Medical Sciences 2014;21(2):64-68
Newborn screening (NBS) program is an important tool for the early diagnosis and preventive treatment of life-long impairments. NBS is one of the strategies recommended by the World Health Organization to promote the primary prevention of congenital anomalies and the health of children with these conditions. However, NBS initiation and implementation in developing countries, especially South-East Asian and North African regions, are slow and challenging. Expanded NBS is not mandatory and has not yet been incorporated into the public healthcare system in our country. Limited funding, manpower shortages, inadequate support services, low public awareness, and uncertain commitment from healthcare practitioners are the main challenges in establishing this program at the national level. Involvement and support from policy makers are very important to the success of the program and the benefit of the entire population.