With the expansion of the knowledge about the physiology of pregnancy is changing the recommendation for safe management during its duration. More and more often talk about the need for physical activity due to maintaining or even increasing cardiopulmonary capacity, muscle strength, range of joint mobility, especially the hip and spine. And the right conduct and selection of exercises not only guarantees the development of the child, but also prepares the future mother for active participation in childbirth. Regular gymnastics and properly selected exercises, as part of pregnancy care with a physiological, uncomplicated course, are widely recognized. It is important that such awareness also have women expecting a child, while gaining additional motivation to exercise. In this article, we have tried to present and justify the valuable effect of the mentioned gymnastic exercises, which a pregnant woman can do without medical contraindications.

Introduction. Cross-country skiing is a sport discipline with different applications in the modern world. It is used in recreation, rehabilitation, tourism and sport as a phycical movement.

Objective of the work. The aim of the study was to estimate physical fitness of children aged 10 - 11 years attending sports classes (cross-country skiing profile) with the results of the efficiency grade among students attending unsportsmanlike classes in Sports Primary School in Suprasl.

Material and methods. The study involved 50 children attending the Sports School in Suprasl -  class 4 students.  Each student was supposed to take part in the International Physical Fitness Test. There were the following attempts: 50 metres run, long jump, sitting position from lying down during 30 seconds, the trunkbend in front and 600 metres run. The results of completed studies are presented in tables and figures below.

Results. The analysis show that girls practising cross-country skiing are characterized by higher efficiency motor skill compared to their peers, as well as it is easier for them to acquire new motor skills than for boys of their class. For boys the differences that occurred between sports and unsportsmanlike classes  was insignificant. Perhaps, it may change in future.

Conclusions. Children attending sports classes (cross country-skiing profile) have better motor abilities and acquire new motor skills faster than pupils in unsportsmanlike classes.