Displaying publications 21 - 40 of 150 in total

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  1. Fulltext Joint association of sitting time and physical activity with metabolic risk factors among middle-aged Malays in a developing country: a cross-sectional study
    Chu AH, Moy FM
    PLoS One, 2013;8(4):e61723.
    PMID: 23613917 DOI: 10.1371/journal.pone.0061723
    Prolonged sitting is associated with increased weight and higher risks for abdominal obesity, dyslipidaemia, hyperglycaemia and hypertension among the adult population. This has been well documented in the West, but studies on these associations are lacking in developing countries, including Malaysia.
    Matched MeSH terms: Posture/physiology*
  2. Fulltext Plausible impact of forward head posture on upper cervical spine stability
    Chu ECP, Lo FS, Bhaumik A
    J Family Med Prim Care, 2020 May;9(5):2517-2520.
    PMID: 32754534 DOI: 10.4103/jfmpc.jfmpc_95_20
    The cervical spine is responsible for allowing mobility and stability to the head and neck. Any deviation to the center of gravity of the head results in an increase in cantilever loads, which can be particularly damaging to the upper cervical joints. Excessive neck bending also exaggerates stretching through the cervical spine and all of the spinal structures below. It has been reported that forward head posture (FHP) can cause a multitude of disorders including cervical radiculopathy, cervicogenic headaches and cervicogenic dizziness. Most of these conditions manifest with clusters of painful symptoms and spine dysfunctions. The purpose of this case study is to describe the radiographic imaging considerations and to illustrate the potential impacts in symptomatic adults with FHP. We randomly selected radiographs of three individuals with FHP who had undergone cervical adjustment for cervical pain. The occipito-axial (C0-C2) and atlanto-axial (C1-C2) joints were assessed via the C0-2 distance from the C2 base to the McGregor line (Redlund-Johnell criterion) and the Ranawat C1-2 index, in addition to subjective radiographic parameters. By comparing the radiographs of before-and-after intervention of each patient, a regressive joint spacing was observed from both indices. Such a long-lasting stretching concordant with FHP was assumed to be hazardous to joint stability. A definite conclusion, however, cannot be drawn due to the small sample size and a lack of convincing measurements.
    Matched MeSH terms: Posture
  3. The management of solitary thyroid nodules under local anaesthesia
    Cunningham IG, Lee YK
    Aust N Z J Surg, 1975 Aug;45(3):285-9.
    PMID: 1058690
    A group of patients with solitary nodules of the thyroid were treated at the University of Malaya by surgery under local anaesthesia. This was done in order to expedite exploration of a potentially malignant condition. This group comprised 43 patients, and four cancers were found. The standard technique used was satisfactory from the viewpoint of both the patient and the surgeon. The pattern of this condition in a Malaysian population is documented, the technique used is described, and thyroidectomy under local aneaesthesia is discussed.
    Matched MeSH terms: Posture
  4. Fulltext Assessing the reliability of subjective evaluation for comfortable driving postures
    Darliana Mohamad, Dian Darina Indah Daruis, Baba Md Deros, Ahmad Rasdan Ismail
    Malaysian Journal of Public Health Medicine, 2016;16(20):14-19.
    MyJurnal
    Drivers’ posture is one of the factors that can contribute to driving discomfort. Subjective evaluation is needed in determining the driving discomfort problem. The purpose of this study is to examine the reliability of different driving postures that may lead to drivers’ discomfort. A total of thirty-four healthy Malaysian drivers were involved in this study. Respondents were required to sit on the driver’s seat with the required adjustments of three different postures and fill-in the given subjective evaluation form. The same procedure was repeated for each respondent after three days for purpose of conducting test retest evaluation. The reliability statistical analysis result shows the study was reliable and valid with a Cronbach’s alpha coefficient equal to 0.827. The comparison means that ANOVA analysis also shows significance difference between these three groups of postures for all measured parameters. In conclusion, the result from this study shows the subjective evaluation conducted is reliable and can be used for drivers’ posture discomfort study.
    Matched MeSH terms: Posture
  5. Developmental Approach for Behavior Learning Using Primitive Motion Skills
    Dawood F, Loo CK
    Int J Neural Syst, 2018 May;28(4):1750038.
    PMID: 29022403 DOI: 10.1142/S0129065717500381
    Imitation learning through self-exploration is essential in developing sensorimotor skills. Most developmental theories emphasize that social interactions, especially understanding of observed actions, could be first achieved through imitation, yet the discussion on the origin of primitive imitative abilities is often neglected, referring instead to the possibility of its innateness. This paper presents a developmental model of imitation learning based on the hypothesis that humanoid robot acquires imitative abilities as induced by sensorimotor associative learning through self-exploration. In designing such learning system, several key issues will be addressed: automatic segmentation of the observed actions into motion primitives using raw images acquired from the camera without requiring any kinematic model; incremental learning of spatio-temporal motion sequences to dynamically generates a topological structure in a self-stabilizing manner; organization of the learned data for easy and efficient retrieval using a dynamic associative memory; and utilizing segmented motion primitives to generate complex behavior by the combining these motion primitives. In our experiment, the self-posture is acquired through observing the image of its own body posture while performing the action in front of a mirror through body babbling. The complete architecture was evaluated by simulation and real robot experiments performed on DARwIn-OP humanoid robot.
    Matched MeSH terms: Posture
  6. Fulltext A case study on manual handling at an electronic component manufacturing company
    Deros, B.M., Daruis, D.D.I., Ghani, J.A., Saleh, C., Wazir, R.M., Yasim, M.K., et al.
    Malaysian Journal of Public Health Medicine, 2016;16(10):0-0.
    MyJurnal
    This An Ergonomic hazard often exists in any industry. However, majority of the employees are not aware of practicing good body posture until the MSDs symptoms become permanent and chronic. The main objective of this study is to determine the manual handling problems among workers at an electronic component manufacturing company. The scope of this study focused on the study entire body disorders among workers on electronic manufacturing company using the Rapid Entire Body Assessment (REBA). A cross sectional study involving observation of the workplace, the work task and the working environment, photographs and videos taken during the observation. Later, a survey questionnaire was given to the respondents to obtain their socio-demography information, work activity and health problems. Rapid Entire Body Assessment (REBA) was conducted on all respondents to determined REBA scores in different work positions. The study was conducted at an electronic component manufacturing company located in Klang Valley, Selangor. A total of 124 workers were surveyed and REBA assessment was performed on 20 workers at Company X production area. It includes 5 categories of position at Company X, such as:loading steel bar into casing; pushing the steel bar, turning movement while adjusting the steel bar, adjusting steel bar into the loading area, unloading steel bar from casing into the machine. The study found that turning section has the highest MSDs problems regarding manual handling because majority of the respondents in the turning department felt the pain while performing their work. This is due to their job demand, which they need to handle with tools weighing from 200 to 400 kg. The REBA scores showed that17 out of 20 respondents performing turning operations, moving and pushing the steel bar recorded the highest score of 11 or more which are categorize in the very high risk group. The position of pushing and turning steel bar while moving the steel bar has higher risk that contributed to the ergonomics risk factor, which in-turn can contribute to Muscular Skeletal Disorders (MSDs). More detailed investigation and remedial measures should be taken immediately, especially for the workers performing the manual handlings activities.
    Matched MeSH terms: Posture
  7. Fulltext Validity test for Simple Ergonomics Risk Assessment (SERA) method
    Ezrin Hani Sukadarin, Baba Md Deros, Jaharah A. Ghani, Ahmad Rasdan Ismail, Nur Syazwani Mohd Nawi, Norhidayah Abdull
    Malaysian Journal of Public Health Medicine, 2016;16(10):0-0.
    MyJurnal
    Validity test is important during the development of ergonomics measurement. Failure to conduct validity tests will result in the measurement method being developed to be incapable of providing reliable ergonomics measurements. The objective of this study is to conduct validity test on the simple method ergonomics measurement which was developed. The method named Simple Ergonomics Risks Assessment (SERA). Content validity test and criterion validity test were conducted. The content validity test consists of 6 ergonomics experts who actively provide inputs and positive feedbacks to improve the measurement method being developed. Meanwhile, the criterion validity test involves data collection of complaints on body parts among oil palm workers which were derived from Nordic Musculoskeletal Questionnaire (NMQ) and ergonomics risk assessment scores obtained from SERA. Both findings were tested with the Chi-square test to explore possible relations between the two findings. Results from the test conducted showed that there are significant relations in the scores of neck posture; hip, right and left shoulder, right and left wrists and the right hand associated with fresh fruit bunch (FFB) harvesting activities. In the loose fruits collection, the Chi-square test showed significant relations in the scores of neck posture, hip, right and left shoulders, right wrist, right arm and the left hand. However, there are body parts such as the legs which showed no significant relation. More tests should be conducted to further explore the validity of the method being developed. Findings from both validity tests show that SERA were verified by the experts and tested with validated method so that it is valid to be applied in the future.
    Matched MeSH terms: Posture
  8. Fulltext Muscular pain among dentists- a pilot study
    Faezah Sabirin, Siti Sarah Abdul Ahmad, W. Zahira Akmal W. Kamarudin
    Compendium of Oral Science, 2015;2(1):32-39.
    MyJurnal
    Background: Muscular pain is the most common symptom associated to muscular skeletal disorders (MSDs). Dentists were exposed to ergonomic hazards while treating the patients. Without proper dental ergonomics, they are predisposed to the MSDs. Objective: This present study was designed to analyse the prevalence of muscular pain among practising dentists in Universiti Teknologi MARA (UiTM) and it relatedness to ergonomic factors. Methodology: A total of 25 dentists were participated in this pilot study. The inclusion criteria include working experience of at least six months and those who were readily diagnosed with musculoskeletal disorders were excluded. A self-administered questionaire was employed to gather demogaphic informations and close ended (“yes” or “no”) questions were asked to assess the muscular pain experienced in the last 12 months. The collected data were then analysed statistically. Result: The result showed a 100% response rate. 92% of the respondents were reported to experience muscular pain, particularly on the upper body parts. Only maintenance of same postures without microbreaks and performing torsions or cervical flexions to improve vision of oral cavity correlate significantly (P
    Matched MeSH terms: Posture
  9. Fulltext Forequarter amputation of the upper extremity for musculoskeletal tumors: posterior approach revisited
    Faisham WI, Zulmi W, Nor Azman MZ, Rhendra Hardy MZ
    Med J Malaysia, 2006 Feb;61 Suppl A:57-61.
    PMID: 17042232
    Forequarter amputation entails surgical removal of entire upper extremity, scapula and clavicle. Several techniques of forequarter amputation have been described. The anterior approach has been the preferred technique of exploration of axillary vessels and brachial plexus. The posterior approach has been condemned to be unreliable and dangerous for most large tumor of the scapula and suprascapular area. We describe a surgical technique using posterior approach of exploration of major vessels for forequarter amputation of upper extremity in eight patients who presented with humeral-scapular tumor. There were six patients with osteosarcoma: three with tumor recurrent and three chemotherapy recalcitrant tumors with vessels involvement. One patient had massive fungating squamous cell carcinoma and another had recurrent rhabdomyosarcoma. Four patients had fungating ulcer and six patients had multiple pulmonary metastases at the time of surgery. The mean estimated blood transfusion was 900 ml (range 0-1600 ml) and two patients did not require transfusion. The duration of surgery ranged 2.5-6.0 hours (mean 3.8 hours). Two patients with known pulmonary metastases required post-operative intensive care monitoring. The mean duration of survival was 5.8 months. The posterior approach of exploring major vessels for forequarter amputation of upper extremity with musculoskeletal tumor is safe and reliable.
    Matched MeSH terms: Posture
  10. Fulltext Parallelogram linkage leg structure for stabilized walking gaits in humanoid robot
    Firdaus Sukarman, Mohd Ghazali Mohd Hamami, Mazleenda Mazni, Muhammad Amir Mat Shah, Ahmad Faidzal Khodori
    Journal of Advanced Research in Applied Sciences and Engineering Technology, 2017;9(1):22-31.
    MyJurnal
    The utilization of parallelogram structure in a small-sized humanoid robot consists of two parallel platforms that are linked serially in each leg. The thigh and shank of each leg consists of two servomotors as actuator and linked in parallel platform. By using parallel mechanism in leg structure, foot sole surface is always parallel to the walking surface at any point. Even it looks unnatural to human-like walking motion, the expected result is the robot can maintain it posture while walking and at the point foot sole touch the walking surface, unnecessary vibrates can be modulated at the certain level to remain its balance. The effectiveness and the performance of the proposed parallel platforms are experimented by using zero moment point (ZMP) method by taking various scenario data from pressure sensors attached at the footsole. Planned walking gait is introduced to be identical in terms of foot steps length and width of each leg swing. As the results, in terms of load in each actuator, required torque at servomotors can be reduced because two servomotors are used simultaneously in one parallel system. Stable walking gait can be predicted as the quantity of error falls within the error ranges from the published walking gait patterns.
    Matched MeSH terms: Posture
  11. Locomotion and posture of the Malayan siamang and implications for hominoid evolution
    Fleagle JG
    Folia Primatol., 1976;26(4):245-69.
    PMID: 1010498
    Wild, adult siamang were observed for over 800 h in lowland dipterocarp forest in the Krau Game Reserve, Pahang, West Malaysia. Siamang use four patterns of locomotion: brachiation, climbing, bipedalism and leaping. The pattern of locomotion used by the siamang varies with the size of arboreal supports and with major behavioral activity. Travel is primarily by brachiation along large boughs. Locomotion during feeding is primarily climbing among small branches. In feeding, siamang use suspensory postures among small supports and seated postures on large supports. Comparison of siamang locomotion and posture with that of other apes suggest that quadramanous climbing during feeding is the basic hominoid locomotor adaptation.
    Matched MeSH terms: Posture*
  12. Fulltext Pathological findings in a mouse model of Japanese encephalitis infected via the footpad
    Fu, Tzeh Long, Ong, Kien Chai, Wong, Kum Thong
    Neurology Asia, 2015;20(4):349-354.
    MyJurnal
    We have developed and characterised a mouse model of Japanese encephalitis virus (JEV) infection via
    footpad inoculation in order to better mimic viral transmission by mosquito bites. Two-week-old and
    5-week-old mice consistently developed signs of infection such as ruffled fur, weight loss, hunchback
    posture, tremors, mask-like facies and occasionally, hindlimb paralysis at 4 days post infection (dpi)
    and 11-13 dpi, respectively. Most of the animals died within 24 to 48 hours following the onset of signs
    of infection, with mortalities of 100% and 33.3% in 2-week-old and 5-week-old mice, respectively.
    Mild meningitis and variable parenchymal inflammation with formation of microglial nodules, focal
    necrosis and neuronophagia, and perivascular cuffing by inflammatory cells were observed in the
    caudate nucleus, putamen, thalamus, cerebral cortex, brainstem, and spinal cord. Viral antigens/RNA
    were demonstrated by immunohistochemisty and in situ hybridization, respectively, in most of these
    areas as well as in the hippocampus and cerebellum, albeit more focally. The pathological findings in
    this mouse model were generally similar to human Japanese encephalitis (JE) and other established JE
    models but perhaps, compared to other JEV mouse models, it demonstrates lethal encephalitic infection
    more consistently. We believe that our mouse model should be useful to study the pathogenesis of JE,
    and for testing anti-viral drugs and vaccines
    Matched MeSH terms: Posture
  13. Fulltext Psycho-behavioural risks of low back pain in railway workers
    Ganasegeran K, Perianayagam W, Nagaraj P, Al-Dubai SA
    Occup Med (Lond), 2014 Jul;64(5):372-5.
    PMID: 24727561 DOI: 10.1093/occmed/kqu039
    BACKGROUND:
    Low back pain (LBP) is the most costly ailment in the work force. Risky work behaviour and psychological stress are established risk factors.

    AIMS:
    To explore the associations between workplace risk factors, psychological stress and LBP among Malaysian railway workers.

    METHODS:
    A cross-sectional study was carried out on railway workers in Malaysia. Socio-demographics, workplace risk factors for LBP, perceived psychological stress and history of LBP over the previous month were obtained by direct interviews using a structured closed-ended questionnaire. Descriptive, bivariate and logistic regression analyses were conducted.

    RESULTS:
    There were 513 study participants (70% response rate). The prevalence of LBP in the previous month was 69%. Multivariate analysis yielded four significant predictors of LBP: employment of ≥ 10 years, lifting and lowering heavy loads, prolonged standing posture and psychological stress.

    CONCLUSIONS:
    The high prevalence of LBP and its significant associations with physical and psychological stress factors in railway workers points to an urgent need for preventive measures, particularly among workers in high-risk occupations.
    Matched MeSH terms: Posture
  14. Fulltext Evaluation of Two New Indices of Blood Pressure Variability Using Postural Change in Older Fallers
    Goh CH, Ng SC, Kamaruzzaman SB, Chin AV, Poi PJ, Chee KH, et al.
    Medicine (Baltimore), 2016 May;95(19):e3614.
    PMID: 27175670 DOI: 10.1097/MD.0000000000003614
    To evaluate the utility of blood pressure variability (BPV) calculated using previously published and newly introduced indices using the variables falls and age as comparators.While postural hypotension has long been considered a risk factor for falls, there is currently no documented evidence on the relationship between BPV and falls.A case-controlled study involving 25 fallers and 25 nonfallers was conducted. Systolic (SBPV) and diastolic blood pressure variability (DBPV) were assessed using 5 indices: standard deviation (SD), standard deviation of most stable continuous 120 beats (staSD), average real variability (ARV), root mean square of real variability (RMSRV), and standard deviation of real variability (SDRV). Continuous beat-to-beat blood pressure was recorded during 10 minutes' supine rest and 3 minutes' standing.Standing SBPV was significantly higher than supine SBPV using 4 indices in both groups. The standing-to-supine-BPV ratio (SSR) was then computed for each subject (staSD, ARV, RMSRV, and SDRV). Standing-to-supine ratio for SBPV was significantly higher among fallers compared to nonfallers using RMSRV and SDRV (P = 0.034 and P = 0.025). Using linear discriminant analysis (LDA), 3 indices (ARV, RMSRV, and SDRV) of SSR SBPV provided accuracies of 61.6%, 61.2%, and 60.0% for the prediction of falls which is comparable with timed-up and go (TUG), 64.4%.This study suggests that SSR SBPV using RMSRV and SDRV is a potential predictor for falls among older patients, and deserves further evaluation in larger prospective studies.
    Matched MeSH terms: Posture/physiology
  15. Fulltext Standing beat-to-beat blood pressure variability is reduced among fallers in the Malaysian Elders Longitudinal Study
    Goh CH, Ng SC, Kamaruzzaman SB, Chin AV, Tan MP
    Medicine (Baltimore), 2017 Oct;96(42):e8193.
    PMID: 29049203 DOI: 10.1097/MD.0000000000008193
    The aim of this study was to determine the relationship between falls and beat-to-beat blood pressure (BP) variability.Continuous noninvasive BP measurement is as accurate as invasive techniques. We evaluated beat-to-beat supine and standing BP variability (BPV) using time and frequency domain analysis from noninvasive continuous BP recordings.A total of 1218 older adults were selected. Continuous BP recordings obtained were analyzed to determine standard deviation (SD) and root mean square of real variability (RMSRV) for time domain BPV and fast-Fourier transform low frequency (LF), high frequency (HF), total power spectral density (PSD), and LF:HF ratio for frequency domain BPV.Comparisons were performed between 256 (21%) individuals with at least 1 fall in the past 12 months and nonfallers. Fallers were significantly older (P = .007), more likely to be female (P = .006), and required a longer time to complete the Timed-Up and Go test (TUG) and frailty walk test (P ≤ .001). Standing systolic BPV (SBPV) was significantly lower in fallers compared to nonfallers (SBPV-SD, P = .016; SBPV-RMSRV, P = .033; SBPV-LF, P = .003; SBPV-total PSD, P = .012). Nonfallers had significantly higher supine to standing ratio (SSR) for SBPV-SD, SBPV-RMSRV, and SBPV-total PSD (P = .017, P = .013, and P = .009). In multivariate analyses, standing BPV remained significantly lower in fallers compared to nonfallers after adjustment for age, sex, diabetes, frailty walk, and supine systolic BP. The reduction in frequency-domain SSR among fallers was attenuated by supine systolic BP, TUG, and frailty walk.In conclusion, reduced beat-to-beat BPV while standing is independently associated with increased risk of falls. Changes between supine and standing BPV are confounded by supine BP and walking speed.
    Matched MeSH terms: Posture/physiology*
  16. Real-time stability measurement system for postural control
    Gopalai AA, Senanayake SM, Kiong LC, Gouwanda D
    J Bodyw Mov Ther, 2011 Oct;15(4):453-64.
    PMID: 21943619 DOI: 10.1016/j.jbmt.2010.10.005
    A method for assessing balance, which was sensitive to changes in the postural control system is presented. This paper describes the implementation of a force-sensing platform, with force sensing resistors as the sensing element. The platform is capable of measuring destabilized postural perturbations in dynamic and static postural conditions. Besides providing real-time qualitative assessment, the platform quantifies the postural control of the subjects. This is done by evaluating the weighted center of applied pressure distribution over time. The objective of this research was to establish the feasibility of using the force-sensing platform to test and gauge the postural control of individuals. Tests were conducted in Eye Open and Eye Close states on Flat Ground (static condition) and the balance trainer (dynamic condition). It was observed that the designed platform was able to gauge the sway experienced by the body when subject's states and conditions changed.
    Matched MeSH terms: Posture/physiology
  17. Determining level of postural control in young adults using force-sensing resistors
    Gopalai AA, Senanayake SM, Gouwanda D
    IEEE Trans Inf Technol Biomed, 2011 Jul;15(4):608-14.
    PMID: 21478080 DOI: 10.1109/TITB.2011.2140378
    A force-sensing platform (FSP), sensitive to changes of the postural control system was designed. The platform measured effects of postural perturbations in static and dynamic conditions. This paper describes the implementation of an FSP using force-sensing resistors as sensing elements. Real-time qualitative assessment utilized a rainbow color scale to identify areas with high force concentration. Postprocessing of the logged data provided end-users with quantitative measures of postural control. The objective of this research was to establish the feasibility of using an FSP to test and gauge human postural control. Tests were conducted in eye open and eye close states. Readings obtained were tested for repeatability using a one-way analysis of variance test. The platform gauged postural sway by measuring the area of distribution for the weighted center of applied pressure at the foot. A fuzzy clustering algorithm was applied to identify regions of the foot with repetitive pressure concentration. Potential application of the platform in a clinical setting includes monitoring rehabilitation progress of stability dysfunction. The platform functions as a qualitative tool for initial, on-the-spot assessment, and quantitative measure for postacquisition assessment on balance abilities.
    Matched MeSH terms: Posture
  18. Energy expenditure of soldiers in a warm humid climate
    Haisman MF
    Br J Nutr, 1972 Mar;27(2):375-81.
    PMID: 5015257
    Matched MeSH terms: Posture
  19. Fulltext Development of a decision support system for analysis and solutions of prolonged standing in the workplace
    Halim I, Arep H, Kamat SR, Abdullah R, Omar AR, Ismail AR
    Saf Health Work, 2014 Jun;5(2):97-105.
    PMID: 25180141 DOI: 10.1016/j.shaw.2014.04.002
    BACKGROUND: Prolonged standing has been hypothesized as a vital contributor to discomfort and muscle fatigue in the workplace. The objective of this study was to develop a decision support system that could provide systematic analysis and solutions to minimize the discomfort and muscle fatigue associated with prolonged standing.

    METHODS: The integration of object-oriented programming and a Model Oriented Simultaneous Engineering System were used to design the architecture of the decision support system.

    RESULTS: Validation of the decision support system was carried out in two manufacturing companies. The validation process showed that the decision support system produced reliable results.

    CONCLUSION: The decision support system is a reliable advisory tool for providing analysis and solutions to problems related to the discomfort and muscle fatigue associated with prolonged standing. Further testing of the decision support system is suggested before it is used commercially.

    Matched MeSH terms: Posture
  20. Development of prolonged standing strain index to quantify risk levels of standing jobs
    Halim I, Omar AR
    Int J Occup Saf Ergon, 2012;18(1):85-96.
    PMID: 22429532
    Many occupations in industry such as metal stamping workers, electronics parts assembly operators, automotive industry welders, and lathe operators require working in a standing posture for a long time. Prolonged standing can contribute to discomfort and muscle fatigue particularly in the back and legs. This study developed the prolonged standing strain index (PSSI) to quantify the risk levels caused by standing jobs, and proposed recommendations to minimize the risk levels. Risk factors associated with standing jobs, such as working posture, muscles activity, standing duration, holding time, whole-body vibration, and indoor air quality, were the basis for developing the PSSI. All risk factors were assigned multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness. multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness.
    Matched MeSH terms: Posture/physiology*
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