Facultad de Ciencias Básicas
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Browsing Facultad de Ciencias Básicas by Author "Felix Rodacki, André Luiz (Director)"
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Item Sistema de medición cuantitativa para determinar el control postural en estudiantes y profesores durante el uso excesivo del Smartphone y su correlación con la Sintomatología musculoesquelética(Universidad Santiago de Cali, 2025) Giraldo Jiménez, Claudia Fernanda; Bermeo Varon, Leonardo Antonio (Director); Felix Rodacki, André Luiz (Director)Background: The use of smartphones can negatively impact the musculoskeletal system due to the constant flexion of the neck and upper limbs. Previous studies have addressed this phenomenon with subjective measurement instruments from various approaches. The Mechanical Movement Dysfunction Model stands out as a possible explanation, and the use of objective measurement systems to identify characteristics of postural control and prevent painful symptoms is a challenge in the health sector. In this sense, the objective of this research is to determine the characteristics of the angles of movement and myoelectric signals involved in the excessive use of smartphones, based on postural changes and muscle fatigue in the neck and upper limbs, and their correlation with the perception of musculoskeletal symptomatology. Methodology: A quantitative study of cross-sectional descriptive design with correlational analysis was carried out, using stratified and convenience sampling, on 50 adults divided into two groups (group 1: students and group 2: professors) from a private university who underwent quantitative measurements by means of IMU and EMGs during smartphone use. Results: There were significant differences in the angles of movement in the head and extremities from the 5 - 10 minute segment, with respect to the characteristics of the myoelectric signals, there were significant differences in the MAV, RMS, AR, MDF, MNF and TTP, as well as in the 5 - 10 minute segment. The most significant characteristics are those of frequency which are reduced, while those of amplitude and power increase. This behavior indicates muscle fatigue. Discussion and Conclusions: The results indicate that musculoskeletal symptomatology and muscle fatigue are present, approximately after 8 minutes of using a Smartphone, which suggests that postural control should be performed, avoiding excessive use of smartphones.