<abstract xmlns="http://www.w3.org/1999/xhtml"><italic>Study aim:</italic> to evaluate the differences in H-reflex parameters in lying and standing positions in canoeists.<italic>
Material and methods:</italic> 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.<italic>Results:</italic> 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 &lt; 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.<italic>Conclusions:</italic> the lying position is recommended for measurements as more comfortable for subjects and providing a greater level of the elicited H-reflex.</abstract>

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.

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

Department of Biomechanics, Institute of Sport, Warsaw, Poland

Faculty of Physical Education, Józef Piłsudski University of Physical Education, Warsaw, Poland

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

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

Biomedical Human Kinetics

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

{"article-title":"The H-reflex modulation in lying and standing positions in young canoeists"}

Study aim: to evaluate the differences in H-reflex parameters in lying and standing positions in canoeists.
Material and methods: twenty seven male canoeists...

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

Publicado en línea: 11 dic 2014

Páginas: -

DOI: https://doi.org/10.2478/bhk-2014-0023

© University of Physical Education, Warsaw, Poland

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.