Displaying publications 1 - 20 of 118 in total

  1. Su AT, Darus A, Bulgiba A, Maeda S, Miyashita K
    J Occup Health, 2012;54(5):349-60.
    PMID: 22863899
    The internationally accepted limit values and the health effects of hand-transmitted vibration exposure have been described extensively in the literature from temperate climate countries but not from a tropical climate environment.

    OBJECTIVES: We conducted a systematic review of the health effects of hand-transmitted vibration exposure in tropical countries to determine the characteristics of hand-arm vibration syndrome in a warm environment and compared the findings with the results of the systematic reviews published by the US NIOSH.

    METHODS: We searched major medical databases including MEDLINE, PubMed, Embase, CINAHL, Ovid and Cochrane based on the terms "hand arm vibration syndrome," "hand transmitted vibration," "vibration white finger" and "Raynaud" up to January 2011. Only studies conducted in a tropical or subtropical environment were selected for the review. The quality of the selected papers was assessed independently by two investigators using predefined criteria. A standard set of information was abstracted from the papers for review.

    RESULTS: Only six papers from tropical countries and three papers from subtropical countries were available in the literature. No vibration white finger was reported in the tropical countries. Neurological symptoms were prevalent in the vibration-exposed workers. Finger coldness seems to be an important surrogate for vascular disorder in a tropical environment. Meta-analysis could not be performed due to inadequacy of the information reported in these papers.

    CONCLUSIONS: The current dose-response relationship in ISO5349-1 for hand-transmitted vibration exposure is not applicable to a tropical environment. Further studies on hand-arm vibration syndromes in tropical countries are needed.

    Matched MeSH terms: Hand-Arm Vibration Syndrome/physiopathology*
  2. Med J Malaya, 1965 Jun;19(4):319-20.
    PMID: 4220861
    Matched MeSH terms: Arm/pathology*
  3. Sengupta S, Murugasu R
    Med J Malaya, 1970 Sep;25(1):70-2.
    PMID: 4249502
    Matched MeSH terms: Arm*; Sarcoma/pathology*
  4. Merican AM, Kwan MK, Cheok CY, Wong ELW, Sara TA
    Med J Malaysia, 2005 Jun;60(2):218-21.
    PMID: 16114164
    Near total amputation of the upper limb if unsalvageable would cause severe disability. However, delayed revascularisation can be life threatening. We report two cases of revascularisation of the upper limb following near total amputation that was successful and functional after a warm ischaemic time of ten hours. The first was a traction avulsion injury of the arm leaving major nerves contused but in continuity. The second was a sharp injury through the mid-forearm attached by only a bridge of skin. Attempting revascularisation of a proximal injury beyond 6 hours, in selected cases is worthwhile.
    Matched MeSH terms: Arm/blood supply*; Arm Injuries/surgery*
  5. Gharghan SK, Nordin R, Ismail M
    Sensors (Basel), 2015;15(5):11741-68.
    PMID: 26007728 DOI: 10.3390/s150511741
    In this paper, we propose an energy-efficient transmission technique known as the sleep/wake algorithm for a bicycle torque sensor node. This paper aims to highlight the trade-off between energy efficiency and the communication range between the cyclist and coach. Two experiments were conducted. The first experiment utilised the Zigbee protocol (XBee S2), and the second experiment used the Advanced and Adaptive Network Technology (ANT) protocol based on the Nordic nRF24L01 radio transceiver chip. The current consumption of ANT was measured, simulated and compared with a torque sensor node that uses the XBee S2 protocol. In addition, an analytical model was derived to correlate the sensor node average current consumption with a crank arm cadence. The sensor node achieved 98% power savings for ANT relative to ZigBee when they were compared alone, and the power savings amounted to 30% when all components of the sensor node are considered. The achievable communication range was 65 and 50 m for ZigBee and ANT, respectively, during measurement on an outdoor cycling track (i.e., velodrome). The conclusions indicate that the ANT protocol is more suitable for use in a torque sensor node when power consumption is a crucial demand, whereas the ZigBee protocol is more convenient in ensuring data communication between cyclist and coach.
    Matched MeSH terms: Arm
  6. Husaini Salleh, Supian Samat, Mohd Khalid Matori, Muhammad Jamal Md Isa, Mohd Ramli Arshad, Shahrul Azlan Azizan, et al.
    Heel Effect is the well known phenomena in x-ray production. It contributes the effect to image
    formation and as well as scattered radiation. But there is paucity in the study related to heel effect.
    This study is for mapping and profiling the dose on the surface of water phantom by using mobile
    C-arm unit Toshiba SXT-1000A. Based on the result the dose profile is increasing up to at least
    about 57% from anode to cathode bound of the irradiated area. This result and information can be
    used as a guide to manipulate this phenomenon for better image quality and radiation safety for
    this specific and dedicated fluoroscopy unit.
    Matched MeSH terms: Arm
  7. Hussain J, Sundaraj K, Subramaniam ID, Lam CK
    Front Physiol, 2020;11:112.
    PMID: 32153422 DOI: 10.3389/fphys.2020.00112
    The objective of this study was to investigate the effects of changes in exercise intensity and speed on the three heads of the triceps brachii (TB) during triceps push-down exercise until task failure. Twenty-five subjects performed triceps push-down exercise at three different intensities (30, 45, and 60% 1RM) and speeds (slow, medium, and fast) until failure, and surface electromyography (sEMG) signals were recorded from the lateral, long and medial heads of the TB. The endurance time (ET), number of repetitions (NR) and rate of fatigue (ROF) were analyzed. Subsequently, the root-mean-square (RMS), mean power frequency (MPF) and median frequency (MDF) under no-fatigue (NF) and fatigue (Fa) conditions were statistically compared. The findings reveal that ROF increases with increase in the intensity and speed, and the opposite were obtained for the ET. The ROF in the three heads were comparable for all intensities and speeds. The ROF showed a significant difference (P < 0.05) among the three intensities and speeds for all heads. The three heads showed significantly different (P < 0.05) MPF and MDF values for all the performed exercises under both conditions, whereas the RMS values were significantly different only under Fa conditions. The current observations suggest that exercise intensity and speed affect the ROF while changes in intensity do not affect the MPF and MDF under Fa conditions. The behavior of the spectral parameters indicate that the three heads do not work in unison under any of the conditions. Changes in the speed of triceps push-down exercise affects the lateral and long heads, but changes in the exercise intensity affected the attributes of all heads to a greater extent.
    Matched MeSH terms: Arm
  8. Hoque A, Islam MT, Almutairi AF
    Sensors (Basel), 2020 Jun 11;20(11).
    PMID: 32545228 DOI: 10.3390/s20113323
    A low-profile high-directivity, and double-negative (DNG) metamaterial-loaded antenna with a slotted patch is proposed for the 5G application. The radiated slotted arm as a V shape has been extended to provide a low-profile feature with a two-isometric view square patch structure, which accelerates the electromagnetic (EM) resonance. Besides, the tapered patch with two vertically split parabolic horns and the unit cell metamaterial expedite achieve more directive radiation. Two adjacent splits with meta units enhance the surface current to modify the actual electric current, which is induced by a substrate-isolated EM field. As a result, the slotted antenna shows a 7.14 dBi realized gain with 80% radiation efficiency, which is quite significant. The operation bandwidth is 4.27-4.40 GHz, and characteristic impedance approximately remains the same (50 Ω) to give a VSWR (voltage Standing wave ratio) of less than 2, which is ideal for the expected application field. The overall size of the antenna is 60 × 40 × 1.52 mm. Hence, it has potential for future 5G applications, like Internet of Things (IoT), healthcare systems, smart homes, etc.
    Matched MeSH terms: Arm
  9. Ramasamy Y, Usman J, Sundar V, Towler H, King M
    Sports Biomech, 2021 Mar 04.
    PMID: 33663330 DOI: 10.1080/14763141.2021.1877336
    Badminton is the fastest racket sport in the world with smash speeds reaching over 111 m/s (400 kph). This study examined the forehand jump smash in badminton using synchronised force plates and full-body motion capture to quantify relationships to shuttlecock speed through correlations. Nineteen elite male Malaysian badminton players were recorded performing forehand jump smashes with the fastest, most accurate jump smash from each player analysed. The fastest smash by each participant was on average 97 m/s with a peak of 105 m/s. A correlational analysis revealed that a faster smash speed was characterised by a more internally rotated shoulder, a less elevated shoulder, and less extended elbow at contact. The positioning of the arm at contact appears to be critical in developing greater shuttlecock smash speeds. Vertical ground reaction force and rate of force development were not correlated with shuttlecock speed, and further investigation is required as to their importance for performance of the jump smash e.g., greater jump height and shuttle angle. It is recommended that players/coaches focus on not over-extending the elbow or excessively elevating the upper arm at contact when trying to maximise smash speed.
    Matched MeSH terms: Arm
  10. Suria-Hayati MP, Siti-Aishah MA, Eshagroni A, Jamari S, Abdolvahab F, Yazmin Y, et al.
    Clin Ter, 2012;163(3):215-7.
    PMID: 22964694
    Epithelioid sarcoma is a very infrequent soft tissue sarcoma involving predominantly distal extremities of adolescent and young adult. We hereby report a case of epithelioid sarcoma in a 34-year-old young adult who presented with 1-year history of a painful left upper limb associated subsequently with warm left forearm swelling and a Volkman contracture. He was treated as an inflamed soft tissue condition of the left upper limb. A computed tomography study showed presence of multiple hypodense lesions mainly in the flexor compartment of the left arm as well at the subcutaneous tissue, which measured 1 to 1.7 cm in diameter. Histological examination of the left upper limb mass showed nodular proliferation of epithelioid tumour cells and some with rhabdoid features surrounding a central zone of necrosis and was diagnosed as epithelioid sarcoma. Concurrent presence of epithelioid sarcoma and Volkman ischaemic contracture are rarely seen in clinical practice. The present case highlights the importance of the histology which can be confused with other types of sarcoma or chronic granuloma and even missed at times thereby causing diagnostic problems.
    Matched MeSH terms: Arm*; Sarcoma/complications*
  11. Gupta A, Srilatha PS, Suvarna N, Rao L
    Indian J Pathol Microbiol, 2011 Jan-Mar;54(1):156-7.
    PMID: 21393904 DOI: 10.4103/0377-4929.77384
    Deep penetrating nevus (DPN) is a variant of melanocytic nevus which goes unrecognized due to its relative rarity and may be misinterpreted as malignant melanoma. It commonly presents in young adults as a dark pigmented lesion on the face, neck, or shoulder. A 60-year-old lady presented with a mole over the left arm of 8 years duration. A biopsy of the lesion was performed under the clinical impression of a compound nevus with suspicion of malignancy. Based on the histologic features, a diagnosis of DPN was put forward.
    Matched MeSH terms: Arm/pathology
  12. Harwant S, Borhan TA
    Med J Malaysia, 2000 Sep;55(3):311-7.
    PMID: 11200710
    156 consecutive children with supracondylar fracture humerus were reviewed. Of these, 56 children with severely displaced fractures were treated with side arm traction. A retrospective review revealed that a mean post-reduction Baumann angle of 74.2 degrees for boys and 75.9 degrees for girls; and mean post-reduction humero-ulna angle of 11.6 degrees for boys and 12.7 degrees for girls was achieved. A linear correlation was noted between the duration of traction and the age of the patient, older patients requiring longer traction. The region below the line in the graph, plotting the duration of traction (y-axis) versus the age of the patient (x-axis) shows when the fracture is unstable; and the region above the line shows when the fracture is stable and can only be reduced by surgery. 10 children presented late; 6 presented within the unstable period and were successfully reduced with traction; while 4 presented stable and required open reduction. We conclude that traction is an acceptable and safe method for reduction of this fracture, and can be used to reduce late presentations while their fractures are still unstable.
    Matched MeSH terms: Arm*
  13. Dharap AS
    Surg Radiol Anat, 1994;16(1):97-9.
    PMID: 8047976
    During dissection an anomalous muscle was found on the medial aspect in the distal half of one left upper extremity. This muscle arose from the humerus between the m. coracobrachialis and the m. brachialis, passed obliquely across the front of the brachial artery and median nerve and blended with the common origin of the forearm flexor muscles. It does not appear to be an additional head of the biceps brachii or the brachialis muscles. The existence of this anomalous muscle should be kept in mind in a patient presenting with a high median nerve palsy together with symptoms of brachial artery compression.
    Matched MeSH terms: Arm*; Brachial Artery/pathology
  14. Chang KM, Chun YT, Chen SH, Lu L, Su HT, Liang HM, et al.
    Sensors (Basel), 2016 Jul 20;16(7).
    PMID: 27447641 DOI: 10.3390/s16071126
    Chan Ding training is beneficial to health and emotional wellbeing. More and more people have taken up this practice over the past few years. A major training method of Chan Ding is to focus on the ten Mailuns, i.e., energy points, and to maintain physical stillness. In this article, wireless wearable accelerometers were used to detect physical stillness, and the created physical stillness index (PSI) was also shown. Ninety college students participated in this study. Primarily, accelerometers used on the arms and chest were examined. The results showed that the PSI values on the arms were higher than that of the chest, when participants moved their bodies in three different ways, left-right, anterior-posterior, and hand, movements with natural breathing. Then, they were divided into three groups to practice Chan Ding for approximately thirty minutes. Participants without any Chan Ding experience were in Group I. Participants with one year of Chan Ding experience were in Group II, and participants with over three year of experience were in Group III. The Chinese Happiness Inventory (CHI) was also conducted. Results showed that the PSI of the three groups measured during 20-30 min were 0.123 ± 0.155, 0.012 ± 0.013, and 0.001 ± 0.0003, respectively (p < 0.001 ***). The averaged CHI scores of the three groups were 10.13, 17.17, and 25.53, respectively (p < 0.001 ***). Correlation coefficients between PSI and CHI of the three groups were -0.440, -0.369, and -0.537, respectively (p < 0.01 **). PSI value and the wearable accelerometer that are presently available on the market could be used to evaluate the quality of the physical stillness of the participants during Chan Ding practice.
    Matched MeSH terms: Arm*
  15. Singh DKA, Rahman NNA, Seffiyah R, Chang SY, Zainura AK, Aida SR, et al.
    Med J Malaysia, 2017 04;72(2):119-121.
    PMID: 28473675 MyJurnal
    INTRODUCTION: There is limited information regarding the effects of interactive virtual reality (VR) games on psychological and physical well-being among adults with physical disabilities. We aimed to examine the impact of VR games on psychological well-being, upper limb motor function and reaction time in adults with physical disabilities.

    METHODS: Fifteen participants completed the intervention using Wii VR games in this pilot study. Depressive, Anxiety and Stress Scales (DASS) and Capabilities of Upper Extremity (CUE) questionnaires were used to measure psychological well-being and upper limb motor function respectively. Upper limb reaction time was measured using reaction time test.

    RESULTS: Results showed that there was a significant difference (p<0.05) in DASS questionnaire and average reaction time score after intervention.

    CONCLUSION: There is a potential for using interactive VR games as an exercise tool to improve psychological wellbeing and upper limb reaction time among adults with disabilities.

    Matched MeSH terms: Arm/physiology*
  16. Yammine K, Erić M
    Phlebology, 2017 Jul;32(6):403-414.
    PMID: 27343223 DOI: 10.1177/0268355516655670
    Background The aim of this systematic review is to quantitatively synthesize evidence on the prevalence of superficial vein patterns in the cubital region. Method A systematic literature search was conducted through a number of electronic databases. We identified 27 studies, including 9924 arms, which met the inclusion criteria. Results Meta-analysis showed that "N" shaped arrangement type was the commonest pattern (≈44-60%) followed by "M" shaped arrangement (≈20-25%). The prevalence of "M" type and "M"-like type was significantly higher in males, whereas females showed a significant predominance of "I" or "O" type. No significant differences in various pattern types were found for laterality. The frequency of "M" type is significantly lesser in Indian and Japanese populations, but they have significantly higher frequency of "N" type. In Malay population, "I" or "O" type was significantly higher, while the brachial CV was poorly developed or missing significantly in Indian population. Conclusion This evidence-based clinical anatomy review contributes to our anatomical knowledge regarding the true prevalence of pattern types of the superficial veins in cubital region in humans and, subsequently, might help in performing safer venous access and more direct approaches to these veins, especially under emergency conditions.
    Matched MeSH terms: Arm/blood supply*; Forearm/blood supply*
  17. Naveen K, Jyothsna P, Nayak SB, Mohandas RK, Swamy RS, Deepthinath R, et al.
    Ethiop J Health Sci, 2014 Jan;24(1):93-6.
    PMID: 24591805
    BACKGROUND: Axillary artery is known to show different variations mostly in its branching pattern. Similarly, the origin of profunda brachii is often encountered with abnormality. Therefore, when the vascular variations in the upper limb persist, mostly it is confined to its branching pattern followed by its variant origin. But, among all the reported variations of profunda brachii, its variant origin from the 3rd part of the axillary artery with common trunk for the branches of axillary artery is unique.

    CASE DETAILS: We report here an anomalous origin of profunda brachii as continuation of an arterial trunk arising from 3rd part of the axillary artery. This common trunk at its commencement passed between 2 roots of median nerve and gave branches of 3rd part of axillary artery before it continued as profunda brachii artery. The further course and branching pattern of profunda brachii were normal.

    CONCLUSION: Since the axillary artery is next choice of artery for arterial cannulation in cardiopulmonary bypass procedures, prior knowledge of existence of such variation in its branching pattern helps in avoiding possible diagnostic or interventional therapeutic errors.

    Matched MeSH terms: Arm/blood supply*
  18. Su AT, Fukumoto J, Darus A, Hoe VC, Miyai N, Isahak M, et al.
    J Occup Health, 2013;55(6):468-78.
    PMID: 24162147
    OBJECTIVES: The aim of this study was to investigate the clinical characteristics of HAVS in a tropical environment in comparison with a temperate environment.

    METHODS: We conducted a series medical examinations among the forestry, construction and automobile industry workers in Malaysia adopting the compulsory medical examination procedure used by Wakayama Medical University for Japanese vibratory tools workers. We matched the duration of vibration exposure and compared our results against the Japanese workers. We also compared the results of the Malaysian tree fellers against a group of symptomatic Japanese tree fellers diagnosed with HAVS.

    RESULTS: Malaysian subjects reported a similar prevalence of finger tingling, numbness and dullness (Malaysian=25.0%, Japanese=21.5%, p=0.444) but had a lower finger skin temperature (FST) and higher vibrotactile perception threshold (VPT) values as compared with the Japanese workers. No white finger was reported in Malaysian subjects. The FST and VPT of the Malaysian tree fellers were at least as bad as the Japanese tree fellers despite a shorter duration (mean difference=20.12 years, 95%CI=14.50, 25.40) of vibration exposure.

    CONCLUSIONS: Although the vascular disorder does not manifest clinically in the tropical environment, the severity of HAVS can be as bad as in the temperate environment with predominantly neurological disorder. Hence, it is essential to formulate national legislation for the control of the occupational vibration exposure.

    Matched MeSH terms: Arm/physiopathology; Hand-Arm Vibration Syndrome/epidemiology*
  19. Bahrom NA, Sirajudeen K, Yip GW, Latiff AA, Ghazali FC
    Food Sci Nutr, 2013 Jan;1(1):83-9.
    PMID: 24804017 DOI: 10.1002/fsn3.10
    In this article, the novel inventive steps for the extraction and quantification of sulfated glycosaminoglycan (GAG) from Acanthaster planci starfish, generally known as crown-of-thorns (COT), are reported. Starfish have been implicated with collagenous distributions within their body anatomy, thus making it a prima facie fact searching for the possibility that GAGs can be isolated from COT. In this study, total-, N-, and O-sulfated GAGs were extracted from three anatomical regions of the COT (integument, internal tissue, and coelomic fluid) and comparison was made. The result showed that body region of COT seemed to contain higher amount of sulfated GAGs as opposed to the arm region (55.79 ± 0.65 μg/mg was the highest amount in the body extracted from its coelomic fluid and 32.28 ± 3.14 μg/mg was the highest amount in the arm extracted from its internal tissue). COT's integument and coelomic fluid from its body region possessed the highest total of sulfated GAGs content with no significant difference (P 
    Matched MeSH terms: Arm
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