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  1. Abdullah MF, Nor NM, Mohd Ali SZ, Ismail Bukhary NB, Amat A, Latif LA, et al.
    Ann Acad Med Singap, 2011 Apr;40(4):168-78.
    PMID: 21678002
    INTRODUCTION: Diabetes mellitus (DM) is a chronic disease that is prevalent in many countries. The prevalence of DM is on the rise, and its complications pose a heavy burden on the healthcare systems and on the patients' quality of life worldwide.

    MATERIALS AND METHODS: This is a multicentre, cross-sectional study involving 5 Health Clinics conducted by Family Medicine Specialists in Malaysia. Convenience sampling of 100 respondents with DM were selected. The International Classifi cation of Functioning, Disability and Health (ICF) based measures were collected using the Comprehensive Core Set for DM. SF-36 and self-administered forms and comorbidity questionnaire (SCQ) were also used.

    RESULTS: Ninety-seven percent had Type 2 DM and 3% had Type 1 DM. The mean period of having DM was 6 years. Body functions related to physical health including exercise tolerance (b455), general physical endurance (b4550), aerobic capacity (b4551) and fatiguability (b4552) were the most affected. For body structures, the structure of pancreas (s550) was the most affected. In the ICF component of activities and participation, limitation in sports (d9201) was the highest most affected followed by driving (d475), intimate relationships (d770), handling stress and other psychological demands (d240) and moving around (d455). Only 7% (e355 and e450) in the environmental category were documented as being a relevant factor by more than 90% of the patients.

    CONCLUSION: The content validity of the comprehensive ICF Core set DM for Malaysian population were identified and the results show that physical and mental functioning were impaired in contrast to what the respondents perceived as leading healthy lifestyles.

  2. Ibitoye MO, Hamzaid NA, Hasnan N, Abdul Wahab AK, Islam MA, Kean VS, et al.
    Med Eng Phys, 2016 Aug;38(8):767-75.
    PMID: 27289541 DOI: 10.1016/j.medengphy.2016.05.012
    The interaction between muscle contractions and joint loading produces torques necessary for movements during activities of daily living. However, during neuromuscular electrical stimulation (NMES)-evoked contractions in persons with spinal cord injury (SCI), a simple and reliable proxy of torque at the muscle level has been minimally investigated. Thus, the purpose of this study was to investigate the relationships between muscle mechanomyographic (MMG) characteristics and NMES-evoked isometric quadriceps torques in persons with motor complete SCI. Six SCI participants with lesion levels below C4 [(mean (SD) age, 39.2 (7.9) year; stature, 1.71 (0.05) m; and body mass, 69.3 (12.9) kg)] performed randomly ordered NMES-evoked isometric leg muscle contractions at 30°, 60° and 90° knee flexion angles on an isokinetic dynamometer. MMG signals were detected by an accelerometer-based vibromyographic sensor placed over the belly of rectus femoris muscle. The relationship between MMG root mean square (MMG-RMS) and NMES-evoked torque revealed a very high association (R(2)=0.91 at 30°; R(2)=0.98 at 60°; and R(2)=0.97 at 90° knee angles; P<0.001). MMG peak-to-peak (MMG-PTP) and stimulation intensity were less well related (R(2)=0.63 at 30°; R(2)=0.67 at 60°; and R(2)=0.45 at 90° knee angles), although were still significantly associated (P≤0.006). Test-retest interclass correlation coefficients (ICC) for the dependent variables ranged from 0.82 to 0.97 for NMES-evoked torque, between 0.65 and 0.79 for MMG-RMS, and from 0.67 to 0.73 for MMG-PTP. Their standard error of measurements (SEM) ranged between 10.1% and 31.6% (of mean values) for torque, MMG-RMS and MMG-PTP. The MMG peak frequency (MMG-PF) of 30Hz approximated the stimulation frequency, indicating NMES-evoked motor unit firing rate. The results demonstrated knee angle differences in the MMG-RMS versus NMES-isometric torque relationship, but a similar torque related pattern for MMG-PF. These findings suggested that MMG was well associated with torque production, reliably tracking the motor unit recruitment pattern during NMES-evoked muscle contractions. The strong positive relationship between MMG signal and NMES-evoked torque production suggested that the MMG might be deployed as a direct proxy for muscle torque or fatigue measurement during leg exercise and functional movements in the SCI population.
  3. Hashim NM, Engkasan JP, Hasnan N
    J Spinal Cord Med, 2022 Nov;45(6):898-906.
    PMID: 33465010 DOI: 10.1080/10790268.2020.1860868
    STUDY DESIGN: Pre- and post- trial.

    OBJECTIVES: To determine the changes of health belief levels after a pressure ulcer (PrU) prevention educational program based on the Health Belief Model (HBM).

    SETTING: Department of Rehabilitation Medicine, University Medical Centre, Malaysia.

    METHODS: This study was conducted between May 2016 and May 2018. We created a multidisciplinary structured PrU prevention education program based on the HBM, consisting of didactic lectures, open discussions and a practical session. The content of the program was based on several PrU prevention guidelines. The education program focused on a group of 6-10 participants, and was conducted by a multidisciplinary team; i.e. doctor, physiotherapist, occupational therapist and a nurse. The skin care belief scales (SCBS) questionnaire was administered pre, post and 8-week post intervention, which measured the 9 domains of HBM. The data from the study was analyzed using repeated measures ANOVA to assess the effectiveness of the program.

    RESULTS: Thirty spinal cord injured participants who fulfilled the inclusion and exclusion criteria completed this study. The results of the education program show statistically significant effects on Susceptibility; F (2,58) = 12.53, P < 0.05, Barriers to Skin Check Belief; F(2,58) = 5.74, P > 0.05, Benefits to Wheelchair Pressure Relief Belief; F(1.65,47.8) = 3.97, P < 0.05, Barriers to Turning and Positioning Belief; F(2,58) = 3.92, P 

  4. Kassim NK, Hanafi MH, Ibrahim AH, Hasnan N
    Malays Orthop J, 2021 Mar;15(1):135-137.
    PMID: 33880162 DOI: 10.5704/MOJ.2103.022
    The optimisation of blood pressure management is critical in managing hypotensive episodes in patients with spinal cord injury. Improper handling of this preventable factor will negatively impact the patient recovery prognosis. A 42-year-old man was admitted for a complete spinal cord injury after fell from height. He developed subacute neurological deterioration unrelated to the mechanical instability but due to multiple episodes of hypotension occurring one month after the initial injury. After proper management of blood pressure, his deterioration was halted and no further progression. Spinal cord haemodynamics play an important role in mediating the onset of subacute post-traumatic ascending myelopathy. Better education and awareness on Subacute Post-traumatic Ascending Myelopathy (SPAM) especially to the junior healthcare providers are important to hinder this rare but avoidable condition.
  5. Ibitoye MO, Hamzaid NA, Hasnan N, Abdul Wahab AK, Davis GM
    PLoS One, 2016;11(2):e0149024.
    PMID: 26859296 DOI: 10.1371/journal.pone.0149024
    BACKGROUND: Rapid muscle fatigue during functional electrical stimulation (FES)-evoked muscle contractions in individuals with spinal cord injury (SCI) is a significant limitation to attaining health benefits of FES-exercise. Delaying the onset of muscle fatigue is often cited as an important goal linked to FES clinical efficacy. Although the basic concept of fatigue-resistance has a long history, recent advances in biomedical engineering, physiotherapy and clinical exercise science have achieved improved clinical benefits, especially for reducing muscle fatigue during FES-exercise. This review evaluated the methodological quality of strategies underlying muscle fatigue-resistance that have been used to optimize FES therapeutic approaches. The review also sought to synthesize the effectiveness of these strategies for persons with SCI in order to establish their functional impacts and clinical relevance.

    METHODS: Published scientific literature pertaining to the reduction of FES-induced muscle fatigue was identified through searches of the following databases: Science Direct, Medline, IEEE Xplore, SpringerLink, PubMed and Nature, from the earliest returned record until June 2015. Titles and abstracts were screened to obtain 35 studies that met the inclusion criteria for this systematic review.

    RESULTS: Following the evaluation of methodological quality (mean (SD), 50 (6) %) of the reviewed studies using the Downs and Black scale, the largest treatment effects reported to reduce muscle fatigue mainly investigated isometric contractions of limited functional and clinical relevance (n = 28). Some investigations (n = 13) lacked randomisation, while others were characterised by small sample sizes with low statistical power. Nevertheless, the clinical significance of emerging trends to improve fatigue-resistance during FES included (i) optimizing electrode positioning, (ii) fine-tuning of stimulation patterns and other FES parameters, (iii) adjustments to the mode and frequency of exercise training, and (iv) biofeedback-assisted FES-exercise to promote selective recruitment of fatigue-resistant motor units.

    CONCLUSION: Although the need for further in-depth clinical trials (especially RCTs) was clearly warranted to establish external validity of outcomes, current evidence was sufficient to support the validity of certain techniques for rapid fatigue-reduction in order to promote FES therapy as an integral part of SCI rehabilitation. It is anticipated that this information will be valuable to clinicians and other allied health professionals administering FES as a treatment option in rehabilitation and aid the development of effective rehabilitation interventions.

  6. Ibitoye MO, Hamzaid NA, Abdul Wahab AK, Hasnan N, Olatunji SO, Davis GM
    Comput Biol Med, 2020 02;117:103614.
    PMID: 32072969 DOI: 10.1016/j.compbiomed.2020.103614
    BACKGROUND AND OBJECTIVE: Using traditional regression modelling, we have previously demonstrated a positive and strong relationship between paralyzed knee extensors' mechanomyographic (MMG) signals and neuromuscular electrical stimulation (NMES)-assisted knee torque in persons with spinal cord injuries. In the present study, a method of estimating NMES-evoked knee torque from the knee extensors' MMG signals using support vector regression (SVR) modelling is introduced and performed in eight persons with chronic and motor complete spinal lesions.

    METHODS: The model was developed to estimate knee torque from experimentally derived MMG signals and other parameters related to torque production, including the knee angle and stimulation intensity, during NMES-assisted knee extension.

    RESULTS: When the relationship between the actual and predicted torques was quantified using the coefficient of determination (R2), with a Gaussian support vector kernel, the R2 value indicated an estimation accuracy of 95% for the training subset and 94% for the testing subset while the polynomial support vector kernel indicated an accuracy of 92% for the training subset and 91% for the testing subset. For the Gaussian kernel, the root mean square error of the model was 6.28 for the training set and 8.19 for testing set, while the polynomial kernels for the training and testing sets were 7.99 and 9.82, respectively.

    CONCLUSIONS: These results showed good predictive accuracy for SVR modelling, which can be generalized, and suggested that the MMG signals from paralyzed knee extensors are a suitable proxy for the NMES-assisted torque produced during repeated bouts of isometric knee extension tasks. This finding has potential implications for using MMG signals as torque sensors in NMES closed-loop systems and provides valuable information for implementing this method in research and clinical settings.

  7. Ramakrishnan K, Chung TY, Hasnan N, Abdullah SJ
    Spinal Cord, 2011 Jul;49(7):812-6.
    PMID: 21221119 DOI: 10.1038/sc.2010.186
    STUDY DESIGN: Cross-sectional survey.
    OBJECTIVES: To determine the employment outcomes of persons with spinal cord injury (SCI) and to investigate the impact of various demographic, injury-related and work-related variables on these outcomes.
    SETTING: People living with SCI in Malaysia who are members of a disability support organization.
    METHODS: A total of 84 members of the Malaysian Spinal Injury Association, who have had traumatic SCI for at least 2 years and were between 15 and 64 years of age at the time of study, were interviewed through phone using a questionnaire to identify the association between demographic, injury-related and work-related variables and employment outcomes.
    RESULTS: The return to work rate in this study was 57.1% (employed at the time of study). The overall employment rate after SCI was 76.2% (worked at some point after injury). Those who were younger at time of injury (<20 years of age), able to drive a modified vehicle, independent in personal care and mobility were positively related to being employed. On the other hand, being hospitalized in the preceding 1 year and receiving financial incentives were negatively related to employment.
    CONCLUSION: Functional independence, especially ability to drive, was strongly associated with return to work and should be one of the priority goals of comprehensive rehabilitation of persons with SCI. The negative impact of recent hospitalization as well as financial compensation needs to be probed further.
  8. Aoun M, Hasnan N, Al-Aaraj H
    East Mediterr Health J, 2018 Jun 10;24(3):269-276.
    PMID: 29908022 DOI: 10.26719/2018.24.3.269
    Background: Lean practices are critical to eliminate waste and enhance the quality of healthcare services through different improvement approaches of total quality management (TQM). In particular, the soft side of TQM is used to develop the innovation skills of employees that are essential for the continuous improvement strategies of hospitals.

    Aim: The main objective was to study the relationship between lean practices, soft TQM and innovation skills in Lebanese hospitals.

    Methods: A quantitative methodology was applied by surveying 352 employees from private and public hospitals in Lebanon. The primary collected data were valid and reliable when analysed by SPSS and AMOS software as a part of structural equation modelling.

    Results: Lean practices significantly influenced the innovation skills; however, soft TQM did not mediate this relationship because it was not well implemented, especially at the level of people-based management and continuous improvement.

    Conclusion: This study has implications for healthcare practitioners to make greater efforts to implement lean practices and soft TQM. Future studies are suggested to highlight different challenges facing quality improvement in the Region.

  9. Naicker AS, Mohamad Yatim S, Engkasan JP, Mazlan M, Yusof YM, Yuliawiratman BS, et al.
    Phys Med Rehabil Clin N Am, 2019 11;30(4):807-816.
    PMID: 31563172 DOI: 10.1016/j.pmr.2019.07.006
    This article reviews the epidemiology, rehabilitation intervention strategies, and rehabilitation resources for persons with disabilities (PWD) in Malaysia. Currently, the registered number of PWD is 409,269 individuals, 1.3% of the total population, which is far less than the World Health Organization estimation of 10%. The rehabilitation implementation strategies include health policies, health promotion, and prevention programs. Health-related services for PWD are provided by many government agencies, including health, welfare, education, manpower, housing, and the private sector and nongovernment organizations. It is hoped national health programs can ensure special care and rehabilitation for PWD, optimizing self-reliance and social integration.
  10. Abd Aziz M, Hamzaid NA, Hasnan N
    J Vis Exp, 2022 Nov 11.
    PMID: 36440840 DOI: 10.3791/63149
    Execution of Sit-to-Stand (SitTS) in incomplete spinal cord injury (SCI) patients involves motor function in both upper and lower extremities. The use of arm support, in particular, is a significant assistive factor while executing SitTS movement in SCI population. In addition, the application of functional electrical stimulation (FES) onto quadriceps and gluteus maximus muscles is one of the prescribed management for incomplete SCI to improve muscle action for simple lower limb movements. However, the relative contribution of upper and lower extremities during SitTS has not been thoroughly investigated. Two motor incomplete SCI paraplegics performed repetitive SitTS to fatigue exercise challenge. Their performance was investigated as a mixed-method case-control study comparing SitTS with and without the assistance of FES. Three sets of SitTS tests were completed with 5-min resting period allocated in between sets, with mechanomyography (MMG) sensors attached over the rectus femoris muscles bilaterally. The exercise was separated into 2 sessions; Day 1 for voluntary SitTS and Day 2 for FES-assisted SitTS. Questionnaires were conducted after every session to gather the participants' input about their repetitive SitTS experience. The analysis confirmed that a SitTS cycle could be divided into three phases; Phase 1 (Preparation to stand), Phase 2 (Seat-off), and Phase 3 (Initiation of hip extension), which contributed to 23% ± 7%, 16% ± 4% and 61% ± 6% of the SitTS cycle, respectively. The contribution of arms and legs during SitTS movement varied in different participants based on their legs' Medical Research Council (MRC) muscle grade. In particular, the applied arm forces start to increase clearly when the leg forces start to decline during standing. This finding is supported by the significantly reduced MMG signal indicating leg muscle fatigue and their reported feeling of tiredness.
  11. Tan, J.H., Aishah A. Fauzi, Hasnan, N.
    JUMMEC, 2017;20(2):31-33.
    MyJurnal
    There is a high incidence of 36% to 83% of respiratory dysfunction in patients with acute cervical spinal cord
    injury. Complications arising from respiratory dysfunction remain one of the most common causes of morbidity
    and mortality in the spinal cord injured population. Specialized pulmonary care and therapy can help individuals
    with tetraplegia to maintain a stable respiratory status allowing active participation in active rehabilitation.
    This would allow them to achieve rehabilitation goals of independent function and community reintegration.
    Mechanical insufflation-exsufflation (MIE) therapy is an option for secretion management in individuals with
    acute spinal cord injury. In this paper, we present our experience using MIE as an adjunct to management of
    secretions in the spinal cord injured population at the University of Malaya Medical Centre.
  12. Khoo TB, Kassim AB, Omar MA, Hasnan N, Amin RM, Omar Z, et al.
    Disabil Rehabil, 2009;31(21):1753-61.
    PMID: 19479558 DOI: 10.1080/09638280902751964
    To determine the magnitude and impact of physical disability on Malaysian school-aged children between 7 and less than 18 years old.
  13. Engkasan JP, Hasnan N, Mohd Yusuf Y, Abdul Latif L
    Am J Phys Med Rehabil, 2017 02;96(2 Suppl 1):S90-S92.
    PMID: 28059888 DOI: 10.1097/PHM.0000000000000598
  14. Dzulkifli MA, Hamzaid NA, Davis GM, Hasnan N
    Front Neurorobot, 2018;12:50.
    PMID: 30147650 DOI: 10.3389/fnbot.2018.00050
    This study sought to design and deploy a torque monitoring system using an artificial neural network (ANN) with mechanomyography (MMG) for situations where muscle torque cannot be independently quantified. The MMG signals from the quadriceps were used to derive knee torque during prolonged functional electrical stimulation (FES)-assisted isometric knee extensions and during standing in spinal cord injured (SCI) individuals. Three individuals with motor-complete SCI performed FES-evoked isometric quadriceps contractions on a Biodex dynamometer at 30° knee angle and at a fixed stimulation current, until the torque had declined to a minimum required for ANN model development. Two ANN models were developed based on different inputs; Root mean square (RMS) MMG and RMS-Zero crossing (ZC) which were derived from MMG. The performance of the ANN was evaluated by comparing model predicted torque against the actual torque derived from the dynamometer. MMG data from 5 other individuals with SCI who performed FES-evoked standing to fatigue-failure were used to validate the RMS and RMS-ZC ANN models. RMS and RMS-ZC of the MMG obtained from the FES standing experiments were then provided as inputs to the developed ANN models to calculate the predicted torque during the FES-evoked standing. The average correlation between the knee extension-predicted torque and the actual torque outputs were 0.87 ± 0.11 for RMS and 0.84 ± 0.13 for RMS-ZC. The average accuracy was 79 ± 14% for RMS and 86 ± 11% for RMS-ZC. The two models revealed significant trends in torque decrease, both suggesting a critical point around 50% torque drop where there were significant changes observed in RMS and RMS-ZC patterns. Based on these findings, both RMS and RMS-ZC ANN models performed similarly well in predicting FES-evoked knee extension torques in this population. However, interference was observed in the RMS-ZC values at a time around knee buckling. The developed ANN models could be used to estimate muscle torque in real-time, thereby providing safer automated FES control of standing in persons with motor-complete SCI.
  15. Hasnan N, Mohamad Saadon NS, Hamzaid NA, Teoh MX, Ahmadi S, Davis GM
    Medicine (Baltimore), 2018 Oct;97(43):e12922.
    PMID: 30412097 DOI: 10.1097/MD.0000000000012922
    This study compared muscle oxygenation (StO2) during arm cranking (ACE), functional electrical stimulation-evoked leg cycling (FES-LCE), and hybrid (ACE+FES-LCE) exercise in spinal cord injury individuals. Eight subjects with C7-T12 lesions performed exercises at 3 submaximal intensities. StO2 was measured during rest and exercise at 40%, 60%, and 80% of subjects' oxygen uptake (VO2) peak using near-infrared spectroscopy. StO2 of ACE showed a decrease whereas in ACE+FES-LCE, the arm muscles demonstrated increasing StO2 from rest in all of VO2) peak respectively. StO2 of FES-LCE displayed a decrease at 40% VO2 peak and steady increase for 60% and 80%, whereas ACE+FES-LCE revealed a steady increase from rest at all VO2 peak. ACE+FES-LCE elicited greater StO2 in both limbs which suggested that during this exercise, upper- and lower-limb muscles have higher blood flow and improved oxygenation compared to ACE or FES-LCE performed alone.
  16. Islam MA, Hamzaid NA, Ibitoye MO, Hasnan N, Wahab AKA, Davis GM
    Clin Biomech (Bristol, Avon), 2018 10;58:21-27.
    PMID: 30005423 DOI: 10.1016/j.clinbiomech.2018.06.020
    BACKGROUND: Investigation of muscle fatigue during functional electrical stimulation (FES)-evoked exercise in individuals with spinal cord injury using dynamometry has limited capability to characterize the fatigue state of individual muscles. Mechanomyography has the potential to represent the state of muscle function at the muscle level. This study sought to investigate surface mechanomyographic responses evoked from quadriceps muscles during FES-cycling, and to quantify its changes between pre- and post-fatiguing conditions in individuals with spinal cord injury.

    METHODS: Six individuals with chronic motor-complete spinal cord injury performed 30-min of sustained FES-leg cycling exercise on two days to induce muscle fatigue. Each participant performed maximum FES-evoked isometric knee extensions before and after the 30-min cycling to determine pre- and post- extension peak torque concomitant with mechanomyography changes.

    FINDINGS: Similar to extension peak torque, normalized root mean squared (RMS) and mean power frequency (MPF) of the mechanomyography signal significantly differed in muscle activities between pre- and post-FES-cycling for each quadriceps muscle (extension peak torque up to 69%; RMS up to 80%, and MPF up to 19%). Mechanomyographic-RMS showed significant reduction during cycling with acceptable between-days consistency (intra-class correlation coefficients, ICC = 0.51-0.91). The normalized MPF showed a weak association with FES-cycling duration (ICC = 0.08-0.23). During FES-cycling, the mechanomyographic-RMS revealed greater fatigue rate for rectus femoris and greater fatigue resistance for vastus medialis in spinal cord injured individuals.

    INTERPRETATION: Mechanomyographic-RMS may be a useful tool for examining real time muscle function of specific muscles during FES-evoked cycling in individuals with spinal cord injury.

  17. Mohamad NZ, Hamzaid NA, Davis GM, Abdul Wahab AK, Hasnan N
    Sensors (Basel), 2017 Jul 14;17(7).
    PMID: 28708068 DOI: 10.3390/s17071627
    A mechanomyography muscle contraction (MC) sensor, affixed to the skin surface, was used to quantify muscle tension during repetitive functional electrical stimulation (FES)-evoked isometric rectus femoris contractions to fatigue in individuals with spinal cord injury (SCI). Nine persons with motor complete SCI were seated on a commercial muscle dynamometer that quantified peak torque and average torque outputs, while measurements from the MC sensor were simultaneously recorded. MC-sensor-predicted measures of dynamometer torques, including the signal peak (SP) and signal average (SA), were highly associated with isometric knee extension peak torque (SP: r = 0.91, p < 0.0001), and average torque (SA: r = 0.89, p < 0.0001), respectively. Bland-Altman (BA) analyses with Lin's concordance (ρC) revealed good association between MC-sensor-predicted peak muscle torques (SP; ρC = 0.91) and average muscle torques (SA; ρC = 0.89) with the equivalent dynamometer measures, over a range of FES current amplitudes. The relationship of dynamometer torques and predicted MC torques during repetitive FES-evoked muscle contraction to fatigue were moderately associated (SP: r = 0.80, p < 0.0001; SA: r = 0.77; p < 0.0001), with BA associations between the two devices fair-moderate (SP; ρC = 0.70: SA; ρC = 0.30). These findings demonstrated that a skin-surface muscle mechanomyography sensor was an accurate proxy for electrically-evoked muscle contraction torques when directly measured during isometric dynamometry in individuals with SCI. The novel application of the MC sensor during FES-evoked muscle contractions suggested its possible application for real-world tasks (e.g., prolonged sit-to-stand, stepping,) where muscle forces during fatiguing activities cannot be directly measured.
  18. Ibitoye MO, Hamzaid NA, Zuniga JM, Hasnan N, Wahab AK
    Sensors (Basel), 2014;14(12):22940-70.
    PMID: 25479326 DOI: 10.3390/s141222940
    The research conducted in the last three decades has collectively demonstrated that the skeletal muscle performance can be alternatively assessed by mechanomyographic signal (MMG) parameters. Indices of muscle performance, not limited to force, power, work, endurance and the related physiological processes underlying muscle activities during contraction have been evaluated in the light of the signal features. As a non-stationary signal that reflects several distinctive patterns of muscle actions, the illustrations obtained from the literature support the reliability of MMG in the analysis of muscles under voluntary and stimulus evoked contractions. An appraisal of the standard practice including the measurement theories of the methods used to extract parameters of the signal is vital to the application of the signal during experimental and clinical practices, especially in areas where electromyograms are contraindicated or have limited application. As we highlight the underpinning technical guidelines and domains where each method is well-suited, the limitations of the methods are also presented to position the state of the art in MMG parameters extraction, thus providing the theoretical framework for improvement on the current practices to widen the opportunity for new insights and discoveries. Since the signal modality has not been widely deployed due partly to the limited information extractable from the signals when compared with other classical techniques used to assess muscle performance, this survey is particularly relevant to the projected future of MMG applications in the realm of musculoskeletal assessments and in the real time detection of muscle activity.
  19. Mat Rosly M, Halaki M, Mat Rosly H, Davis GM, Hasnan N, Husain R
    Disabil Rehabil, 2020 07;42(14):2067-2075.
    PMID: 30686132 DOI: 10.1080/09638288.2018.1544294
    Purpose: The Physical Activity Scale for Individuals with Physical Disabilities questionnaire provides an assessment of physical activity after spinal cord injury. This study sought to adapt, with cultural competence, the English questionnaire and translate it into Bahasa Malaysia, including evaluation of content and face validity, internal consistency and test-retest reliability, and completion of a factor analysis in order to validate the Malaysian version.Materials and methods: A total of 250 participants completed the questionnaire that was distributed via email, postal mail, the internet, physically and by word of mouth. Sixty-eight respondents were re-contacted to complete the questionnaire again.Results: The adapted PASIPD demonstrated adequate internal consistency Cronbach's α = 0.68 and acceptable test-retest reliability, intraclass correlation = 0.87. Factor analysis extracted four main dimensions for physical activity; factor 1 (heavy housework, home repair, lawn work and gardening), factor 2 (sports and recreation), factor 3 (light housework and caring for another person) and factor 4 (leisure and occupational activities) that accounted for 64% of the physical activities' total variance.Conclusion: The Malaysian-adapted English and translated Bahasa Malaysia versions of the questionnaires intended to measure physical activity levels in individuals with spinal cord injury, demonstrated good to acceptable validity and reliability. However, some individual items revealed weak reliability measures. Further work is needed to validate the questionnaire's criterion validity against other physical activity measures.Implications for rehabilitationThe Malaysian adaptation of the Physical Activity Scale for Individuals with Physical Disabilities questionnaire provided preliminary support for its use since it has demonstrated adequate construct validity and reliability.The Malaysian adaptation of the Physical Activity Scale for Individuals with Physical Disabilities questionnaire can quantify the physical activity level of community-dwelling individuals with spinal cord injury, whilst deriving descriptive information on their physical activities.Deploying the Physical Activity Scale for Individuals with Physical Disabilities questionnaire to a spinal cord injury population in Malaysia may provide the first data on activities of daily living in an Asian developing country.
  20. Mat Rosly M, Halaki M, Hasnan N, Mat Rosly H, Davis GM, Husain R
    Spinal Cord, 2018 08;56(8):806-818.
    PMID: 29410495 DOI: 10.1038/s41393-018-0068-0
    STUDY DESIGN: Cross-sectional.
    OBJECTIVES: An epidemiological study describing leisure time physical activities (LTPA) and the associations of barriers, sociodemographic and injury characteristics to moderate-vigorous aerobic exercise participation among individuals with spinal cord injury (SCI) in a developing Southeast Asian country.
    SETTING: SCI community in Malaysia.
    METHODS: The study sample consisted of 70 participants with SCI. Questionnaires were distributed containing an abbreviated Physical Activity Scale for Individuals with Physical Disabilities (items 2-6) and the Barriers to Exercise Scale using a 5-tier Likert format. Statistical analyses were χ2 tests, odds ratios, and binary forward stepwise logistic regression to assess the association and to predict factors related to participation in moderate-vigorous intensity aerobic exercise (items 4 and 5).
    RESULTS: Seventy-three percent of the study sample did not participate in any form of moderate or vigorous LTPA. The top three barriers to undertaking LTPA (strongly agree and agree descriptors) were expensive exercise equipment (54%), pain (37%) and inaccessible facilities (36%). Participants over the age of 35 years, ethnicity, health concerns, perceiving exercise as difficult and indicating lack of transport were significantly different (p 
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