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Physiotherapy Review
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vol. 25
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Artykuł oryginalny

The usefulness of assessing single-leg jumps in children aged 7–13 years in a postural-motor control test

Małgorzata Matyja
Aleksandra Bartela
Justyna Friedrich
Marta Smyk

  1. Department of Physiotherapy in Movement System and Developmental Age Diseases, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
PTrev 2021; vol 25 (2) 32-40
Data publikacji online: 2021/06/23
Pełna treść artykułu Pobierz cytowanie
Metryki PlumX:

The quality of motor patterns during single-leg jum ping can be a valuable adjunct to the diag-nosis of body stabilisa tion in school-age children.

The purpose of this study was to qualitatively and quantitati vely analyse single-leg jumps in children aged 7–13 years.

Material and methods
A total of 148 children (72 girls and 76 boys) aged 7 to 13 years participated in the study. The inclusion criterion was the lack of contraindications to jumping. The test station con sisted of a circle with a diameter of 75 cm and two cameras placed on the side and in front of the sub-ject. The test consisted of eight jumping trials, with 30-second breaks between them. We evalu ated the time the subjects needed to perform 15 jumps on one leg and the number of jumps on one leg within a given time unit (i.e. 30 seconds). The jumps were analysed qualita-tively and quantita tively.

The predominant activity type of the supporting limb in most examined children was the in-termediate position. Internal rotation was observed in most children aged 7 years and external rotation in one-third of the children aged 13 years. The anterior type of positioning of the un-loaded lower limb occurred least frequently, and the posterior type occurred most frequently. The mixed type was noted in most 9-year-old children. Upper limb synkinesis was the most common compensatory behaviour (synkinesis) in the study group. The best average time was achieved by the 13-year-olds, while the 11-year-olds achieved the worst time. Statistically significant differences in the time required to perform 15 single-leg jumps occurred between the groups of 10- and 11-year-olds (p = 0.002) and between the 11- and 12-year-olds (p = 0.0002) to the disadvantage of the 11-year-old children. The differences in results were statistically significant between the 9-year- -olds and all older age groups (p < 0.05). Statistically significant differences (p=0.01) were noted only for jumps with right-side rotations.

Single-leg jumping is a skill performed by younger school-age children variably and does not show a linear progression. The single- -leg jumping assessment can be used as an adjunct to test-ing body stabilisation in children.

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