Teknik Squat dan Stoop Menggunakan Electromyography pada Pekerjaan Manual Materials Handling
Abstract: Manual materials
handling has been identified as the most common cause of work-related
musculoskeletal disorders. Among the manual material handling activities,
lifting has long been regarded as an activity associated with a high risk of
low-back pain. Lifting studies have mainly focused on the squat and stoop
lifting techniques as an effort to improve the protection of workers from low
back discomfort. However, neither is ideal and the benefits of one technique
over another have proved inconclusive. The purpose of this study was to examine
and compare the squat and stoop lifting techniques through analysis of muscles
activation by using electromyography. Six volunteers participated in the study,
and were required to lift a weight with squat and stoop techniques, with two
types of loading at 1,7 kg and 6,7 kg. Observations were made on the rectus
femoris, biceps femoris, and multifidus muscles. The results of study showed
that the squat technique had higher levels of muscle activation compared to
stoop technique on rectus femoris muscle. On the contrary, squat technique had
lower muscle activation compared to stoop technique on biceps fermoris muscle.
Meanwhile, both techniques squat and stoop had the same level of muscle
activation on multifidus muscle. Conclusion, squat and stoop lifting techniques
had the same opportunities to use.
Penulis: I Wayan Surata
Kode Jurnal: jptindustridd130335
