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Effect of ergonomic seat redesign for a gingga machine on musculoskeletal disorder complaints among oil palm Hengki Fernando Sinaga; Fatmawaty Mallapiang; Habibi Habibi; Hasbi Ibrahim; La Ode Ismail Ahmad
International Journal on Health and Medical Sciences Vol. 4 No. 3 (2026): August: Medical and Health Science
Publisher : Institute of Accounting Research and Novation (IARN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/healmed.v4i3.768

Abstract

Oil palm fertilization exposes workers to manual handling, repetitive movements, and non neutral postures, yet evidence is limited on ergonomic seating integrated into gingga machines used for fertilizer application. This study evaluated whether a redesigned gingga seat was associated with reduced musculoskeletal disorder complaints among oil palm fertilization workers. A quasi-experimental pretest posttest control-group study was conducted at an oil palm plantation in North Sumatra, Indonesia, from October to December 2025. Using purposive sampling, 84 eligible workers were allocated equally to an intervention group using gingga machines with redesigned seats (n = 42) and a control group continuing usual work (n = 42). Musculoskeletal complaints were measured using the Nordic Body Map and analyzed separately within each group using paired samples t-tests. The control group mean decreased from 61.45 to 60.80, a nonsignificant reduction of 0.65 points (p = 0.231). The intervention group mean decreased from 62.10 to 54.35, a significant reduction of 7.75 points or 12.5% (p < 0.001), with the group mean shifting from the painful to the slight-pain category. These findings suggest a potentially meaningful practical improvement following seat redesign. However, groups were not randomly assigned, baseline characteristics differed, and change scores were not compared directly between groups; therefore, a comparative intervention effect cannot be confirmed. The redesigned seats provide preliminary evidence for adapting gingga machines to workers’ physical support needs. Randomized or matched studies using anthropometric design, objective ergonomic measures, direct between group analysis, and longer follow-up are needed to confirm effectiveness and sustainability.
HUBUNGAN POSTUR KERJA DAN GERAKAN BERULANG DENGAN KELUHAN WMSDS PADA PENGRAJIN SONGKOK RECCA' KABUPATEN BONE Nurfatwa Ridha; A. Syamsiah Adha; Habibi Habibi; Hasbi Ibrahim
Jurnal Kesehatan Tambusai Vol. 7 No. 3 (2026): SEPTEMBER 2026
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jkt.v7i3.61717

Abstract

Keluhan Work Related Musculoskeletal Disorders (WMSDs) merupakan gangguan otot rangka dari beban statis berulang, berpotensi tinggi pada pengrajin kerajinan tangan. Pembuatan Songkok Recca’ masih dilakukan secara manual dengan pola kerja yang melibatkan postur tubuh yang kurang ergonomis dan gerakan berulang dalam durasi kerja yang panjang. Kondisi terebut berpotensi memberikan tekanan berkelanjutan pada sistem muskuloskeletal dan menjadi pemicu munculnya keluhan WMSDs pada pengrajin Songkok Recca’. Di Indonesia, prevalensi gangguan muskuloskeletal berdasarkan diagnosis dokter tercatat sebesar 7,3%, menandakan bahwa gangguan pada sistem otot dan rangka masih menjadi persoalan kesehatan masyarakat yang penting.  Penelitian ini bertujuan untuk mengkaji hubungan antara postur kerja dan gerakan berulang dengan keluhan WMSDs pada pengrajin Songkok Recca’. Penelitian ini merupakan studi kuantitatif dengan pendekatan observasional analitik dan desain cross sectional study, di mana variabel dependen dan independen diukur secara bersamaan. penelitian dilaksanakan di Dusun Sawange, Desa Paccing, Kabupaten Bone pada Januari-Februari 2026 dengan 125 responden sebagai sampel penelitian. Hasil analisis menggunakan uji Chi-square menunjukkan adanya hubungan yang signifikan antara postur kerja dan gerakan berulang dengan keluhan WMSDs (p < 0.05). Dapat disimpulkan bahwa postur kerja dan gerakan berulang berhubungan dengan keluhan WMSDs pada pengrajin Songkok Recca’.
Co-Authors A. Ibrahim, Irviani A. Syamsiah Adha Abd Majid HR Lagu Alda Robiany Andi Ade Ula Saswini Andi Akram Al Qadri Andi Susilawaty Ani Asriani Basri Arifuddin, Nur Fitriyani Asmaul Husnah Asmi, Andi Nurazizah Aswarin Prastiani Ayu Hamid Azriful Azriful Bs. Titi Haerana Darsul S Puyu Deby Rara Yolanda Duhung, Irwan Dwi Santy Damayati Dwi Santy Damayati, Dwi Santy Emmi Bujawati Fatmawaty Mallapiang Fatmawaty Mallapiang Futri Alifia Rezkiyanti Githa Nurfaridha Yahya Gunawan Rasyidi Habibi . Habibi Habibi Habibi Habibi Haruna, Nadyah Hasnah Hasnah Hengki Fernando Sinaga Herlina Herlina Hesti Hesti Husnah, Asmaul Husnul Khatimah Iman Kurnianda Irviani Anwar Ibrahim Isma, Rabiatul Khansaa Afifah M Kiky Afriani Andi Aris Krisno Bimantoro La Ode Ismail Ahmad Lilis Widiastuty M. Fais Satrianegara Moh. Hidayat Muh. Irwan Muh. Kahfi Muhammad Adriansyah Muhammad Azwar Muhammad Rusmin Muhammad Saleh Jastam Muhben Muktar Munawir Amansyah Munawir Amansyah Munawir Amansyah Nahda Syaidah Marhabatsar Nildawati Nildawati Ilda Nildawati Nildawati Nirma Nirma Nirwana Putri Awaliah Nur Afiat Soraya Mursyaf Nur Amalia Wahyuni Tahir Nur Rahma Nurdiyanah Syarifuddin Nurfadillah Tenri Ugi Nurfatwa Ridha Nursyifah Syukur Onky Pranata Putra Qadri Karim Ramisdar, Irma Octaviani Ranti Ekasari Rezki Awalia Ria Anggraini Sausan, Qonitah Sitti Raodhah Sri Safitri Tambunga Sunandar Sunandar Surahmawati Surahmawati Syahrul Basri Syamsul Alam Syamsul Alam Syamsuryana Basri Syarfaini Syarfaini Syarfaini Syarfaini, Syarfaini Syukur, Nursyifah Tuhelelu, Ghifari M. Nuh Yudi Adnan Yusma Indah Jayadi Zainal Hamzah