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Morphometrics of nuchal ligament in greyhound in different neck and body positions

Ismail SMY, Murray CM, Olusa TAO, Ismail MM, Hailat NQ, Yen HH, et al.

Anat Histol Embryol, 2022 Jan;51(1):143-152.
PMID: 34882828 DOI: 10.1111/ahe.12771

This study was conducted to describe the morphometrics of nuchal ligament and investigate the effects of different neck and body positions on the nuchal ligament in greyhounds. Nine adult greyhounds cadavers without any locomotion abnormalities were dissected through the neck musculature on the left side to expose the nuchal ligament. Three pins were placed to mark regions of interest on the nuchal ligament: at one cm cranial to the site of origin (the most dorsal point of the spinous process of the first thoracic vertebra), at the midpoint of the nuchal ligament and one cm caudal to the nuchal ligament site of insertion (close to the caudal aspect of the spinous process of the axis). Each cadaver was positioned on a masonite board and placed on a table on the floor in their lateral recumbency and seven different standardized body positions; P1-P7 were mimicked using goniometers and metal wires. Photographs were taken by positioning and fixing the camera above the nuchal ligament region. The length and widths (W1, W2 and W3) of nuchal ligament were measured using Image Pro software (Image-Pro Express version 5.0) on standardized photographs of each of seven different body and neck positions. The length of nuchal ligament in relation to the neutral position (P1) was less (- 7%, p > 0·05) in P6 (neck elevated) and increased in all other positions (+1%, p > 0·05 for P2, +19%, p 0·05 for P5, +40%, p

Matched MeSH terms: Posture
Fulltext Longitudinal, lateral and transverse axes of forearm muscles influence the crosstalk in the mechanomyographic signals during isometric wrist postures

Islam MA, Sundaraj K, Ahmad RB, Sundaraj S, Ahamed NU, Ali MA

PLoS One, 2014;9(8):e104280.
PMID: 25090008 DOI: 10.1371/journal.pone.0104280

In mechanomyography (MMG), crosstalk refers to the contamination of the signal from the muscle of interest by the signal from another muscle or muscle group that is in close proximity.

Matched MeSH terms: Posture/physiology*
Analysis of crosstalk in the mechanomyographic signals generated by forearm muscles during different wrist postures

Islam A, Sundaraj K, Ahmad RB, Sundaraj S, Ahamed NU, Ali MA

Muscle Nerve, 2015 Jun;51(6):899-906.
PMID: 25204740 DOI: 10.1002/mus.24454

In this study, we analyzed the crosstalk in mechanomyographic (MMG) signals generated by the extensor digitorum (ED), extensor carpi ulnaris (ECU), and flexor carpi ulnaris (FCU) muscles of the forearm during wrist flexion (WF) and extension (WE) and radial (RD) and ulnar (UD) deviations.

Matched MeSH terms: Posture/physiology*
Fulltext Spinal analgesia and headache at Penang General Hospital

Inbasegaram K, Yong BH

Med J Malaysia, 1985 Sep;40(3):233-8.
PMID: 3842718

One hundred (100) consecutive patients who underwent spinal analgesia for surgical and orthopaedic operations were studied. Postural headache occurred in 9% of patients, the majority in those cases where large bore (l8G to 21G) needless were used. No other neurological complications were encountered. Conservative measures provided some relief of the headache. Epidural blood patch was found to be effective.

Matched MeSH terms: Posture
Reliability of postural measures in elite badminton players using Posture Pro 8

Hébert-Losier K, Abd Rahman F

Physiother Theory Pract, 2018 Jun;34(6):483-494.
PMID: 29281461 DOI: 10.1080/09593985.2017.1420117

The Posture Pro software is used for photogrammetry assessment of posture and has been commercially available for several years. Along with symmetry-related measures, a Posture Number® is calculated to reflect the sum of postural deviations. Our aim was to investigate the intra- and inter-rater reliability of measures extracted using the Posture Pro 8 software without using reference markers on subjects. Four raters assessed the standing posture of 40 badminton players (20 males, 20 females) from anterior, lateral, and posterior photographs. Thirty-three postural measures were extracted using visual landmarks as guide. Reliability was quantified using intra-class correlation coefficient (ICC) and typical error of measurement (TEM). Overall, the intra-rater reliability was considered good to excellent for nearly all measures. However, only two measures had excellent inter-rater reliability, with 13 and 18 measures exhibiting good and fair inter-rater reliability, respectively. Posture Pro specific measures (n = 9) exhibited good-to-excellent intra-rater and fair-to-excellent inter-rater reliability, with small-to-moderate and small-to-large TEM, respectively. Overall, the Posture Pro 8 software can be considered a reliable tool for assessing a range of posture-relevant measures from photographs, particularly when performed by the same examiner. The Posture Number® demonstrated generally acceptable intra- and inter-rater reliability. Nonetheless, investigations on the validity, sensitivity, and interpretation of this measure are essential to confirm its clinical relevance.

Matched MeSH terms: Posture*
Fulltext Cognitive stress changes the attributes of the three heads of the triceps brachii during muscle fatigue

Hussain J, Sundaraj K, Subramaniam ID

PLoS One, 2020;15(1):e0228089.
PMID: 31999750 DOI: 10.1371/journal.pone.0228089

INTRODUCTION: Cognitive stress (CS) changes the peripheral attributes of a muscle, but its effect on multi-head muscles has not been investigated. The objective of the current research was to investigate the impact of CS on the three heads of the triceps brachii (TB) muscle.
METHODS: Twenty-five young and healthy university students performed a triceps push-down exercise at 45% one repetition maximum (1RM) with and without CS until task failure, and the rate of fatigue (ROF), endurance time (ET) and number of repetitions (NR) for both exercises were analyzed. In addition, the first and last six repetitions of each exercise were considered non-fatiguing (NF) and fatiguing (Fa), respectively, and the root mean square (RMS), mean power frequency (MPF) and median frequency (MDF) for each exercise repetition were evaluated.
RESULTS: The lateral and long head showed significant differences (P<0.05) in the ROF between the two exercises, and all the heads showed significant (P<0.05) differences in the RMS between the two exercises under NF conditions. Only the long head showed a significant difference (P<0.05) in the MPF and MDF between the two exercises. CS increases the ET (24.74%) and NR (27%) of the exercise. The three heads showed significant differences (P<0.05) in the RMS, MPF and MDF under all exercise conditions.
CONCLUSION: A lower ROF was obtained with CS. In addition, the RMS was found to be better approximator of CS, whereas MPF and MDF were more resistant to the effect of CS. The results showed that the three heads worked independently under all conditions, and the non-synergist and synergist head pairs showed similar behavior under Fa conditions. The findings from this study provide additional insights regarding the functioning of each TB head.

Matched MeSH terms: Posture/physiology
Fulltext Venous Air Embolism during Elective Craniotomy for Parasagittal Meningioma

Hassan WMNW, Asmah Z, Saedah A

Med J Malaysia, 2013;68(1):69-70.
PMID: 23466772 MyJurnal

We report a case of a 59 year old man who developed venous air embolism (VAE) during an elective craniotomy for parasagittal meningioma resection. The surgery was done in the supine position with slightly elevated head position. VAE was provisionally diagnosed by sudden decreased in the end tidal carbon dioxide pressure from 34 to 18 mmHg, followed by marked hypotension and atrial fibrillation. Prompt central venous blood aspiration, aggressive resuscitation and inotropic support managed to stabilize the patient. Post operatively, he was admitted in neuro intensive care unit and made a good recovery without serious complications.

Matched MeSH terms: Posture
Ergonomic evaluation of postural stress in school workshop

Hashim AM, Dawal SZ, Yusoff N

Work, 2012;41 Suppl 1:827-31.
PMID: 22316824 DOI: 10.3233/WOR-2012-0249-827

The objective of this study is to compare the evaluation of postural analysis between a self-report questionnaire and physical assessments methods for students aged 13 to 15 years old in school workshop. 336 students were volunteered as participants to fill in the questionnaire and being observed in the workshop. Total of 104 positions were selected and analyzed while students performing their tasks. Questionnaire data was examined to specify the prevalence of postural stress symptoms. The relationship of postural stress by physical assessment methods (RULA and REBA methods) was defined to identify the risk level of students' working posture. From the results, comparison of four factors categorized from total of 22 questions among ages, the mean values were lower for 13 years old students meaning that they were faced higher posture problems while using the workstation. The obtained results from both physical assessment methods and questionnaire analysis have identified 13 years old students faced higher risk exposure. Analysis results emphasized the fact that self-reports questionnaire method has almost accurate as postural evaluation methods to identify physical risks in workplace. The result also shows that an intervention is needed to overcome the posture problems.

Matched MeSH terms: Posture*
Call center ergonomics issues: A case study

Hari Krishnan, T.

Journal of Occupational Safety and Health, 2012;9(3):17-22.
MyJurnal

Introductions: Call center has been defined as a working environment in which uses telephone and computer for the purpose of marketing and manage communication with prospect clients or existing clients (Rocha, Glina, Morinho and Nakasato, 2005; Sprigg, Smith and Jackson, 2003).
Methodology: The study was conducted via observation of working condition and face to face interview with call center operators. Measurement of anthropometrics was also conducted.
Results: Ergonomics issues found at call center were inappropriate work condition and workstation which lead to awkward sitting posture (sitting with forward leaning posture, raised shoulder, feet not supported on floor). Besides that organizational policy which required high job demand and subsequently lead to prolonged sitting and static posture (very minimal posture changes). Combination all these factors lead to musculoskeletal symptoms and the operators reported of having neck, shoulder, upper back and lower back pain compared to other body parts.
Conclusion: The management should embark on organization wide ergonomics management program and should review the current policy and create safe and healthy working environment by providing suitable workstation for the operators in order to prevent musculoskeletal.

Matched MeSH terms: Posture
Fulltext Anthropometrics evaluation of children between genders

Hanani Yuhaniz, Asnawi Seraila, Siti Rafedah Abdul Karim, Suhaimi Muhammed, Abdul Hamid Saleh

Malaysian Journal of Public Health Medicine, 2016;16(101):22-25.
MyJurnal

In developing ergonomically sound furniture, there is a need in evaluating anthropometrics from various aspect such as gender differences. The objectives of this study was to evaluate anthropometrics differences between genders of children in Malaysia in order to determine the need in having specified chairs for each gender. Represented by four states in Malaysia, a total of 2400 children were involved in the study. A custom made measurer and an anthropometer were used to measure the subjects. Six body measurements, which are, sitting shoulder height, sitting subscapular height, shoulder breadth, buttock popliteal length, popliteal height and hip width were documented for evaluation. From this study, there were some significant differences on some body parts while other body parts were similar to male and female. Therefore, chairs are needed to be made according to the suitability of both gender.

Matched MeSH terms: Posture
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
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*
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
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
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
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
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*
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
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
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*

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