The H-reflex modulation in lying and standing positions in young canoeists

• Authors: Joanna Mazur–Różycka , Jan Gajewski , Krzysztof Buśko , Radosław Michalski , Patrycja Łach
• Languages of publication: EN

Abstracts

EN

Study aim: to evaluate the differences in H-reflex parameters in lying and standing positions in canoeists. Material and methods: twenty seven male canoeists (age 17.2 ± 1.6 year, body mass 73.7 ± 7.6 kg, height 180.9 ± 6.1 cm, training experience 6.5 ± 3.6 years) participated in the study. None of the subjects had any history of neuromuscular disorders. The soleus H-reflex was examined in each subject twice: in lying and standing position. H-reflex was elicited by one-millisecond electrical stimulation of a posterior tibial nerve in the popliteal fossa. A recruitment curve for each subject was obtained by gradually increasing the stimulus intensity.Results: the results obtained in the present study showed statistically significant differences of the variables characterising effects of stimulations performed in lying and standing positions (F4,23 = 8.063; p < 0.001). H/M ratio was 0.50 ± 0.25 and 0.64 ± 0.27 for lying and standing positions, respectively. Our results support previous findings.Conclusions: the lying position is recommended for measurements as more comfortable for subjects and providing a greater level of the elicited H-reflex.

Keywords

EN

H-reflex ; Posture ; Soleus muscle

• Publisher: Versita
• Journal: Biomedical Human Kinetics
• Year: 2014
• Volume: 6
• Issue: 1

Dates

online

11 - 12 - 2014

Contributors

author

Joanna Mazur–Różycka

• Department of Biomechanics, Institute of Sport, Warsaw, Poland

author

Jan Gajewski

• Department of Biomechanics, Institute of Sport, Warsaw, Poland
• Faculty of Physical Education, Józef Piłsudski University of Physical Education, Warsaw, Poland

author

Krzysztof Buśko

• Institute of Physical Culture, Kazimierz Wielki University, Bydgoszcz, Poland

author

Radosław Michalski

• Department of Biomechanics, Institute of Sport, Warsaw, Poland

author

Patrycja Łach

• Department of Ergonomics Laboratory of Biomechanics, Central Institute for Labour Protection – National Research Institute, Warsaw, Poland

References

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Identifiers

DOI

10.2478/bhk-2014-0023