Showing 2 results for Ghaderi
Teymour Allahyari, Sara Hedayati, Hamidreza Khalkhali, Fariba Ghaderi,
Volume 2, Issue 2 (Journal of Ergonomics 2014)
Abstract
Background: Patient Manual handling is one of the major risk factors in musculoskeletal disorders among healthcare workers (HCWs). Therefore, the purpose of this study was to estimate the mechanical force on the low back of the staff responsible for patient manual handling and to exam in the effect of patient manual handling by two people on the level forces exerted on HCWs ҆ low back.
methods: the participants of this study were 10 health care workersdoing patient manual handling individually and by two people . To determine the posture of these people, we filmed them both from front and side and force plate was used to determine the weight of the patient handling by HCWs. 3DSSPP was used to estimate theforces exerted on the their low back during patient manual handling.
Results: Results showed that among the four studied tasks, the maximum compression forces exerted on discs L4/L5 and L5/S1 were 3591 ± 863 and 3342 ± 827 respectively when the patient was seated on wheelchair. The Maximum shear force exerted on the disc L4/L5 and L5/S1 were 252 ± 122 432 ± 36 N respectively when patient was seated on the bed. No significant difference was seen in the average forces exerted on low back except seating patient on wheelchair. ( P> 0.05)
Conclusions: The comparison of exerted force on disks with recommended limits revealed that only the task of placing patient on wheelchair exerted force on low back exceed NIOSH recommended weight limit. patient manual handling by two people most tasks of this study does not created significant difference. Therefore to reduce exert force on low back need ergonomic intervention including bed design, beds appropriate stabilization, training.
Masoumeh Seif, Kamal Ranjbar, Mahbanoo Ghaderi,
Volume 14, Issue 1 (Iranian Journal of Ergonomics-In Press 2026)
Abstract
Objectives: The purpose of this study was to investigate the effects of combined functional exercise training on fear of falling, salivary cortisol levels and quality of life in older adults with fear of falling.
Methods: Forty older adults (16 men and 24 women aged ≥65 years) with fear of falling were randomly assigned to either a control group (n = 20, 8M/12F) or an exercise group (n = 20, 8M/12F). The exercise group participated in an 8-week combined training program consisting of resistance, balance, and flexibility exercises, while the control group maintained their usual lifestyle. Quality of life (LEIPAD questionnaire) and fear of falling (FES-I) were assessed before and 48 hours after the intervention in both groups. Salivary cortisol levels were also measured using the ELISA method.
Results: Fear of falling was significantly lower in the training group compared to the control group after the intervention (p < 0.0001). The 8‑week combined exercise program resulted in a 51% reduction in fear of falling among the older adults (p < 0.0001). Quality of life significantly improved in the training group compared to the control group (p ≤ 0.001). Moreover, salivary cortisol levels were lower in the training group than in the control group (p ≤ 0.0001), while the combined exercises produced a 19.5% reduction in cortisol compared to pre-training levels (p = 0.07).
Conclusion: Combined functional exercise program significantly reduced fear of falling and improved quality of life in older adults, while also inducing a downward trend in cortisol levels. Therefore, such programs can be recommended as safe and effective strategies in geriatric rehabilitation settings
