Abstract
This article presents a comprehensive study of human physiology to determine the impact of body mass index (BMI) on human gait. The approach followed in this study consists of a mathematical model based on the centre of mass of the human body, the inertia of a person in motion and the human gait speed. Moreover, the study includes the representation of a building using graph theory and emulates the presence of a person inside the building when an emergency takes place. The optimal evacuation route is obtained using the breadth-first search (BFS) algorithm, and the evacuation time prediction is calculated using a Gaussian process model. Then, the risk of the building is quantified by using a non-sequential Monte Carlo simulation. The results open up a new horizon for developing a more realistic model for the assessment of civil safety.
Highlights
According to the World Health Organization (WHO), the number of individuals who are overweight worldwide has tripled since 1975
In an effort to fill the gaps in the existing literature, this paper proposes a comprehensive model based on the body mass index (BMI) to determine the evacuation time of a building, taking into account the physical phenomena involved in human motion
This paper proposes an innovative approach to show the impact of sex and BMI on human gait
Summary
According to the World Health Organization (WHO), the number of individuals who are overweight worldwide has tripled since 1975 (http://www.who.int/es/news-room/fact-sheets/detail/obesity-and-overweight). Mass Index (BMI) is a reliable indicator of overweight, and it is commonly used to identify if a person lies within a weight category that can lead to health problems [2]. A person is considered to be obese if his or her BMI is greater than 30. There are a number of studies in the literature in which the BMI is calculated on the basis of weight and height [3,4,5,6,7]. The Center for Disease Control and Prevention (CDC) states that “factors such as age, sex, ethnicity, and muscle mass can influence the relationship between BMI and body fat. BMI doesn’t distinguish between excess fat, muscle, or bone mass, nor does it provide any indication of the distribution of fat among individuals” [8,9]
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