The term work-related musculoskeletal disorders (WMSDs) refers to a wide range of inflammatory or degenerative diseases affecting body tissues such as tendons, muscles, ligaments, nerves, vessels, bones and soft tissues that cause pain and discomfort in workers with repercussions even in activities of daily living. One of the main MSDs is Low Back Pain (LBP) which is defined as pain, muscle tension and/or stiffness localized between the lower edge of the costal arch and the gluteal folds, with or without radiating pain to the lower limb. Especially in the industrial sector, ergonomic equipment, such as the exoskeleton, has been developed to reduce the load in the lower back and improve the well-being of workers. The aim of this study is to verify and compare differences in muscle activation and expressed force (Kg) in 10 male subjects while performing an isometric pull-up with and without a passive exoskeleton, detected by surface electromyography and the use of a load cell. The results of this study showed that there was no significant difference in both force expressed and muscle activation between using the exoskeleton and free-body. Any future tests should evaluate the parameters of muscle strength and activation under conditions other than isometry with the external support of the passive exoskeleton, and in addition, should be performed on a larger number of subjects in their own work environment in order to obtain more consistent and objective data for each type of gesture performed.
Con il termine patologie muscoloscheletriche lavoro correlate (work-related musculoskeletal disorders o WMSDs) ci si riferisce ad un ampio ventaglio di malattie infiammatorie o degenerative a carico dei tessuti corporei quali tendini, muscoli, legamenti, nervi, vasi, ossa e tessuti molli che causano dolore e disagio nei lavoratori con ripercussioni anche nelle attività della vita quotidiana. Una delle principali MSD è la Lombalgia o Low Back Pain (LBP) che è definita come dolore, tensione muscolare e/o rigidità localizzati tra il margine inferiore dell’arcata costale e le pieghe glutee, con o senza dolore irradiato all’arto inferiore. Soprattutto nel settore industriale si sono sviluppate apparecchiature ergonomiche, come l’esoscheletro, che permettono di ridurre il carico nella zona lombare e migliorare il benessere dei lavoratori. Lo scopo di questo studio è verificare e confrontare le differenze nell’attivazione muscolare e nella forza espressa (Kg) in 10 soggetti di sesso maschile durante l’esecuzione di una tirata isometrica con e senza esoscheletro passivo, rilevate tramite elettromiografia di superficie e l’uso di una cella di carico. I risultati di questo studio hanno dimostrato che non vi è differenza significativa sia nella forza espressa sia nell’attivazione muscolare tra l’utilizzo dell’esoscheletro e a corpo libero. Eventuali test futuri dovrebbero valutare i parametri di forza e attivazione muscolare in condizioni diverse da quelle di isometria con il supporto esterno dell’esoscheletro passivo e inoltre, dovrebbero essere effettuati su un numero più consistente di soggetti nel proprio ambiente lavorativo, al fine di ottenere dati più consistenti e oggettivi per ogni tipologia di gesto svolto.
Esoscheletro e corpo libero: differenze fra attivazione muscolare e forza espresse durante un gesto specifico.
SONZOGNI, FEDERICO
2023/2024
Abstract
The term work-related musculoskeletal disorders (WMSDs) refers to a wide range of inflammatory or degenerative diseases affecting body tissues such as tendons, muscles, ligaments, nerves, vessels, bones and soft tissues that cause pain and discomfort in workers with repercussions even in activities of daily living. One of the main MSDs is Low Back Pain (LBP) which is defined as pain, muscle tension and/or stiffness localized between the lower edge of the costal arch and the gluteal folds, with or without radiating pain to the lower limb. Especially in the industrial sector, ergonomic equipment, such as the exoskeleton, has been developed to reduce the load in the lower back and improve the well-being of workers. The aim of this study is to verify and compare differences in muscle activation and expressed force (Kg) in 10 male subjects while performing an isometric pull-up with and without a passive exoskeleton, detected by surface electromyography and the use of a load cell. The results of this study showed that there was no significant difference in both force expressed and muscle activation between using the exoskeleton and free-body. Any future tests should evaluate the parameters of muscle strength and activation under conditions other than isometry with the external support of the passive exoskeleton, and in addition, should be performed on a larger number of subjects in their own work environment in order to obtain more consistent and objective data for each type of gesture performed.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/69060