ABSTRACT
Multiplatform Mobile Applications for the Promotion of Physical Activity in times of Covid-19: A Case Study at Trujillo City : The lack of a mobile application for the promotion of physical activity of people in the city of Trujillo, has not allowed to improve their physical and mental health, resulting in sedentary lifestyle and diseases caused by overweight and obesity. The objective of this research seeks to promote physical activity of people in Trujillo, through the use of a multiplatform mobile application. For this, a multiplatform mobile application was developed using the Mobile-D methodology, a control group (Gc) and an experimental group (Ge) were used, the hypotheses were validated through Student's t test. [...]the results showed significant improvements in Ge with respect to Gc in the indicators of time physical activity / day, physical activity / week, number of exercises practiced and time without exercising / day.