Satu kajian keratan rentas telah dijalankan untuk melihat kesan pendedahan haba ke atas perubahan fisiologi di kalangan pekerja lelaki sebuah kilang pembuatan komponen otomotif di Shah Alam, Selangor. Seramai 46 orang yang berkerja di bahagian foundri telah dipilih sebagai responden kajian. Pemboleh ubah yang dikaji adalah WBGT Dalaman, kadar haba metabolik, suhu teras badan, tekanan darah, denyutan nadi dan kadar denyutan nadi. Hasil kajian mendapati nilai min WBGT Dalaman di bahagian operasi foundri adalah sebanyak 28.96 0C. Pekerja foundri terdedah kepada haba semasa
proses peleburan besi, proses memasukkan silika dah debu besi ke dalam acuan pembentukan, dan pembentukan teras. Purata masa pengukuran yang paling singkat adalah selama 2 jam dan 8 jam untuk keseluruhan tempoh pendedahan. Ujian Bonferroni menunjukkan terdapat perbezaan yang signifikan di antara suhu teras badan sebelum syif bermula dengan 2 jam selepas syif bermula (p = 0.05) dan di antara sebelum syif bermula dengan selepas tamat syif 8 jam bekerja (p < 0.001). Terdapat perkaitan yang lemah di antara suhu teras badan dengan kadar denyutan nadi sebelum syif bermula (r = 0.293, p = 0.048) dan di antara suhu teras badan dengan tekanan darah sistolik selepas tamat syif 8 jam bekerja (r = 0.309, p =0.036). Kadar denyutan nadi responden adalah berada di antara julat 51 hingga 98 denyutan perminit, menunjukkan tidak terdapat tuntutan aktiviti kerja yang berlebihan ke atas fisiologi. Min suhu teras badan (36.37 ± 0.53 0C) dan kadar denyutan nadi (74.50 ± 10.10 per minit) selepas tamat syif 8 jam menunjukkan pekerja mempunyai kawalan
tubuh badan yang baik terhadap pendedahan haba. Tiga daripada empat seksyen kerja yang dikaji mempunyai bacaan WBGT Dalaman melebihi 28 0C (ACGIH TLV). Pekerja terdedah kepada tegasan haba yang sederhana sepanjang kajian ini berlangsung, walaubagaimanapun, suhu teras badan, kadar denyutan nadi dan tekanan darah masih tidak mencapai tahap tegangan kepada fisiologi.
A cross sectional study was carried out to determine the relationship between dust exposure and pulmonary function in male steel workers in Terengganu, Malaysia. The investigation included spirometric testing and detailed personal interviews using a structured questionnaire adopted from British Medical Research Council (BRMC) Questionnaire on respiratory symptoms. Respiratory symptoms commonly reported by the male workers were morning phlegm (33.1%), shortness of breath (31.9%), chest tightness (30.4%), and morning cough (17.8%). Age and duration of employment were among the factors associated with respiratory symptoms (p
Oil palm workers are exposed to ergonomics problems in their routine works. Although many technological advances have been developed, a large number of workers are still using manual handling tools in their daily work. A study was done to identify and solve the problems or issues of material handling effect on oil palm collectors and loaders during their daily work activities. A cross sectional study was done in an oil palm plantation in Negeri Sembilan, Malaysia. Twenty five workers were selected randomly to participate in this study. Musculoskeletal symptoms were recorded using Modified Nordic Questionnaires and awkward postures of the workers were assessed using Rapid Entire Body Assessment (REBA). Result showed that 61% of workers were exposed to high risk level and 39% to very high risk level of working posture problems. In conclusion, majority of oil palm collectors and loaders need to correct their working posture as soon as possible. The manual handling activities need to be improved with respect to correct procedure for health and safety concerns.