The Influence of Fatigue on the Characteristics of Physiological Tremor and Hoffmann Reflex in Young Men

Joanna Mazur-Różycka (), Jan Gajewski, Joanna Orysiak, Dariusz Sitkowski and Krzysztof Buśko
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Joanna Mazur-Różycka: Department of Ergonomics, Central Institute for Labour Protection–National Research Institute (CIOP-PIB), 00-701 Warsaw, Poland
Jan Gajewski: Faculty of Physical Education, Józef Piłsudski University of Physical Education, 00-968 Warsaw, Poland
Joanna Orysiak: Department of Ergonomics, Central Institute for Labour Protection–National Research Institute (CIOP-PIB), 00-701 Warsaw, Poland
Dariusz Sitkowski: Department of Physiology, Institute of Sport-National Research Institute, 01-982 Warsaw, Poland
Krzysztof Buśko: Department of Anatomy and Biomechanics, Kazimierz Wielki University, 85-091 Bydgoszcz, Poland

IJERPH, 2023, vol. 20, issue 4, 1-10

Abstract: The aim of the study was to determine the relationship between changes in physiological tremor after exercise and changes in the traction properties of the stretch reflex indirectly assessed using the Hoffmann reflex test. The research involved 19 young men practicing canoe sprint (age 16.4 ± 0.7 years, body mass 74.4 ± 6.7 kg, body height 182.1 ± 4.3 cm, training experience 4.8 ± 1.6 years). During resting tests, Hoffmann reflex measurements were performed from the soleus muscle, physiological tremor of the lower limb, and the blood lactate concentration was determined. Then, a graded test was carried out on the kayak/canoe ergometer. Immediately after the exercise and in the 10th and 25th minute following the exercise, Hoffmann’s reflex of the soleus muscle was measured. The physiological tremor was measured at 5, 15 and 30 min after exercise. Blood lactate concentrations were determined immediately after physiological tremor. Both the parameters of Hoffmann’s reflex and physiological tremor changed significantly after exercise. There were no significant interrelationships between Hoffmann reflex measurements and physiological tremor in resting and post-exercise conditions. No significant correlation was detected between changes in physiological tremor and changes in Hoffmann reflex parameters. It is to be assumed that there is no connection between a stretch reflex and a physiological tremor.

Keywords: H-reflex; lower extremity tremor; athletes; kayak/canoe ergometer (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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