Background: Neuro-muscular fatigue (ANM) in the upper limbs can cause impaired coordination and dexterity. The main purpose of the study was to investigate whether ANM induced by a working day produced a reduction in digital dexterity in a population of dental health workers (OSD). Secondary objective was to investigate whether there were relationships between any reductions in dexterity and independent socio-demographic variables (gender, age and profession). Methods: A cohort of OSD was assessed before and at the end of a working day of at least 7 hours using the Functional Dexterity Test (FDT). The effects of ANM (time), of the tested limb (dominance), and of their interaction on dexterity were investigated using two-way ANOVA. A multiple linear regression model was applied to explore the relationship between dexterity performance and independent variables. Results: A total of 50 OSDs were included. The net time of the FDT at the end of the day was always higher than in the morning. The ANOVA showed a significant difference for time (p <0.001) and side (p <0.001), but an effect from the interaction between the two factors was not identified (p = 0.428). The worsening of manual dexterity appears to be weakly correlated with age on both sides, and with the profession in the dominant limb. Conclusion: The ANM appears to have negatively affected the dexterity of both hands in the sample examined. The results of this study may be useful for planning the OSD's work agenda more carefully.
Introduzione: L’affaticamento neuro-muscolare (ANM) agli arti superiori può causare un’alterazione della coordinazione e della destrezza. Scopo principale dello studio era di indagare se l’ANM indotta da una giornata di lavoro producesse una riduzione di destrezza digitale in una popolazione di operatori sanitari dentali (OSD). Obiettivo secondario era quello di indagare se vi fossero relazioni tra le eventuali riduzioni delle performances di destrezza e variabili socio-demografiche indipendenti (genere, età e professione). Metodi: Una coorte di OSD è stata valutata prima e al termine di una giornata lavorativa di almeno 7 ore tramite il Functional Dexterity Test (FDT). Gli effetti dell’ANM (tempo), dell’arto testato (dominanza), e della loro interazione sulla destrezza sono stati indagati tramite ANOVA a due vie. Un modello di regressione lineare multiplo è stato applicato per esplorare la relazione tra la performance di destrezza e le variabili indipendenti. Risultati: Sono stati inclusi complessivamente 50 OSD. Il tempo netto di esecuzione del FDT a fine giornata è stato sempre superiore a quello del mattino. L’ANOVA ha mostrato una differenza significativa per il tempo (p < 0.001) e per il lato (p < 0.001), ma non è stato identificato un effetto dall’interazione tra i due fattori (p = 0.428). Il peggioramento della destrezza manuale risulta essere debolmente correlato all’età in entrambi i lati, e dalla professione nell’arto dominante. Conclusioni: L’ANM sembra aver influenzato negativamente la destrezza di entrambe le mani nel campione esaminato. I risultati di questo studio possono essere utili a pianificare più attentamente l’agenda lavorativa degli OSD.
Relationship between work fatigue and manual dexterity in dental professionals: observational study
Francesco Sartorio
Primo
;Giorgio FerrieroSecondo
;Stefano VercelliUltimo
2020-01-01
Abstract
Background: Neuro-muscular fatigue (ANM) in the upper limbs can cause impaired coordination and dexterity. The main purpose of the study was to investigate whether ANM induced by a working day produced a reduction in digital dexterity in a population of dental health workers (OSD). Secondary objective was to investigate whether there were relationships between any reductions in dexterity and independent socio-demographic variables (gender, age and profession). Methods: A cohort of OSD was assessed before and at the end of a working day of at least 7 hours using the Functional Dexterity Test (FDT). The effects of ANM (time), of the tested limb (dominance), and of their interaction on dexterity were investigated using two-way ANOVA. A multiple linear regression model was applied to explore the relationship between dexterity performance and independent variables. Results: A total of 50 OSDs were included. The net time of the FDT at the end of the day was always higher than in the morning. The ANOVA showed a significant difference for time (p <0.001) and side (p <0.001), but an effect from the interaction between the two factors was not identified (p = 0.428). The worsening of manual dexterity appears to be weakly correlated with age on both sides, and with the profession in the dominant limb. Conclusion: The ANM appears to have negatively affected the dexterity of both hands in the sample examined. The results of this study may be useful for planning the OSD's work agenda more carefully.File | Dimensione | Formato | |
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