Tag: wskaźnik asymetrii postawy

Which way of carrying a four-kilogram schoolbag disturbs the body posture the least and which disturbs the most in 7-year-old students of both sexes?

Mirosław Mrozkowiak

 

Mirosław Mrozkowiak –Which way of carrying a four-kilogram schoolbag disturbs the body posture the least and which disturbs the most in 7-year-old students of both sexes? Fizjoterapia Polska 2023; 23(5); 6-29

DOI: https://doi.org/10.56984/8ZG20B24g

Abstract
Introduction. The aim of the research was to determine, which of the analyzed ways of carrying shows the strongest and the weakest correlations with the values after a 10-minute loading with a four-kilogram schoolbag after two-minute restitution. Material, method. The body posture research was carried among a group of 65 children aged 7 with the projection moiré in 4 positions: 1- habitual position, 2- position after a 10-minute loading, 3 – after one minute of the load removal and 4- after two minutes of the load removal. Results. There were analyzed correlations of the differences values of the frontal, sagittal and transversal plane features in a habitual position with the values after a ten-minute loading with a four-kilogram schoolbag as well as with values after two-minute restitution. Conclusions. (1) Carrying a four-kilogram loading in two equal containers on the chest and back or one on the back disturbs body posture statics the least of a 7-year-old student. (2) The fullest restitution of the values of body posture features takes place after carrying two equal containers on the chest and back or one on the back. (3) The most unfavourable changes of the values of body posture features during carrying and restitution appear when the schoolbag is carried on the chest and dragged with right or left hand.

Key words:
children’s health, moire topography, physical fitness, postural asymmetry factor

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The difference of the influence of the weight of school supplies on body posture features in carrying on the right or left shoulder by 7-year-old students of both sexes

Mirosław Mrozkowiak


Mirosław Mrozkowiak – The difference of the influence of the weight of school supplies on body posture features in carrying on the right or left shoulder by 7-year-old students of both sexes. Fizjoterapia Polska 2023; 23(3); 32-58

DOI: https://doi.org/10.56984/8ZG143751

Abstract
Introduction. Periodically, at the turn of August and September the problem of overloading children with too heavy schoolbags rises and it may initiate various disorders not only around the spine area. Material, method. The research on body posture was carried out in a group of 65 7-year-old students by Projection Moiré in 8 positions. First position – habitual position, second – after 10 min. of asymmetric loading on the left or right shoulder, third – after 1 min. of the load removal, and fourth – after 2 min. of the load removal. Results. There were analyses of significance of the differences between 1st and 2nd, 1st and 3rd, 1st and 4th, 2nd and 3rd, and 3rd and 4th measurement to determine the influence of loading and correlation of the differences with physical activity. It was also measured, which way of carrying disturbs the body posture less.
Conclusions.
1. A four-kilograms load of school supplies carried on the left or right shoulder disturbs significantly and negatively biomechanical body statics of a 7-year-old child, which may cause errors in long term perspective and consequently body posture disorders. Relatedly, this way of carrying school supplies is not recommended to first graders.
2. Physical fitness has more significant meaning in biomechanical body statics disorders in frontal plane than in sagittal and transversal plane, relatedly among boys than girls. Endurance and strength show the most common correlations with changes of values of body posture features. In sagittal and transversal plane speed and strength have the greatest meaning but in frontal plane it is endurance and strength.
3. Restitution of none of the analyzed values of body posture features was not complete after 1 and 2 min. when carrying on the left or right shoulder was terminated, which means low overall fitness and immature corrective-compensatory processes.

Key words:
children’s health, moiré topography, physical fitness, postural asymmetry factor

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