Page 135 - Petelin Ana. Ur. 2022. Zdravje otrok in mladostnikov / Health of children and adolescents. Proceedings. Koper: Založba Univerze na Primorskem/University of Primorska Press
P. 135
https://doi.org/10.26493/978-961-293-167-4.135-139
The role of muscle and fat mass
in the expression of explosive power
in preschool children
Miran Muhič1, Klavdija Rančnik2
1University of Maribor, Faculty of Education and Institute of sports medicine, Slovenia
2 Kindergarten Velenje, Velenje, Slovenia
miran.muhic@um.si; klavdija.rancnik@student.um.si
Abstract
Introduction: Motor development, motor abilities, and physical fitness
level in children are potent biomarkers of health from an early age. In
order to assess motor abilities and physical fitness in young children
practical and easy-to-perform tests are necessary. Explosive power is
defined as the ability to perform the maximum effort in a minimum
amount of time. Body composition has a significant impact on motor
skills and consequently on motor development and health status. With
this research we want to find out what the role is a muscle and fat mass
in the expression of explosive power in preschool children according
to their body weight status. Methods: A causal non-experimental
method was used to obtain the data. The sample consists of 5-6-year-
old children of both genders (N=75), divided into three groups based on
body mass index (WHO BMI for age 5-19 years) – Normalweight (N=54),
Overweight (N=5) and Obesity (N=16). The explosive power of the legs
was measured with the motor test long jump from the site and the motor
test counter movement jump tests on the ARS balance plate. Muscle and
fat mass were measured with a Tanita DC 430-MA body composition
analyzer. ANOVA (Eta squared / Effect Size) was used to compare results
between groups and Pearson correlation for differences between groups.
Results: Children in the Normalweight group achieved the best results
on explosive power tests, and children in the Obesity group achieved
the worst results. However, the differences between the groups are not
statistically significant (p >0.05). Discussion and conclusions: Reducing
the proportion of fat mass in the body and increasing the proportion
of muscle mass in the preschool period is important for well-developed
explosive power. Children need to be offered enough exercise and sports
activities, including jumping and running.
Keywords: muscle mass, fat mass, explosive power, preschool children
The role of muscle and fat mass
in the expression of explosive power
in preschool children
Miran Muhič1, Klavdija Rančnik2
1University of Maribor, Faculty of Education and Institute of sports medicine, Slovenia
2 Kindergarten Velenje, Velenje, Slovenia
miran.muhic@um.si; klavdija.rancnik@student.um.si
Abstract
Introduction: Motor development, motor abilities, and physical fitness
level in children are potent biomarkers of health from an early age. In
order to assess motor abilities and physical fitness in young children
practical and easy-to-perform tests are necessary. Explosive power is
defined as the ability to perform the maximum effort in a minimum
amount of time. Body composition has a significant impact on motor
skills and consequently on motor development and health status. With
this research we want to find out what the role is a muscle and fat mass
in the expression of explosive power in preschool children according
to their body weight status. Methods: A causal non-experimental
method was used to obtain the data. The sample consists of 5-6-year-
old children of both genders (N=75), divided into three groups based on
body mass index (WHO BMI for age 5-19 years) – Normalweight (N=54),
Overweight (N=5) and Obesity (N=16). The explosive power of the legs
was measured with the motor test long jump from the site and the motor
test counter movement jump tests on the ARS balance plate. Muscle and
fat mass were measured with a Tanita DC 430-MA body composition
analyzer. ANOVA (Eta squared / Effect Size) was used to compare results
between groups and Pearson correlation for differences between groups.
Results: Children in the Normalweight group achieved the best results
on explosive power tests, and children in the Obesity group achieved
the worst results. However, the differences between the groups are not
statistically significant (p >0.05). Discussion and conclusions: Reducing
the proportion of fat mass in the body and increasing the proportion
of muscle mass in the preschool period is important for well-developed
explosive power. Children need to be offered enough exercise and sports
activities, including jumping and running.
Keywords: muscle mass, fat mass, explosive power, preschool children
