Neuromuscular Adaptations after an Altitude Training Camp in Elite Judo Athletes

Katja Tomazin, Filipa Almeida, Igor Stirn, Paulino Padial, Juan Bonitch-Góngora, Antonio J. Morales-Artacho, Vojko Strojnik and Belen Feriche
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Katja Tomazin: Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
Filipa Almeida: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain
Igor Stirn: Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
Paulino Padial: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain
Juan Bonitch-Góngora: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain
Antonio J. Morales-Artacho: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain
Vojko Strojnik: Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia
Belen Feriche: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain

IJERPH, 2021, vol. 18, issue 13, 1-16

Abstract: The aim of this study was to investigate neuromuscular adaptations in elite judo athletes after three weeks of power-oriented strength training at terrestrial altitude (2320 m). Nineteen men were assigned to altitude training (AL) (22.1 ± 2.3 years) and sea level training (SL) (22.6 ± 4.1 years). Neuromuscular assessment consisted of: (1) maximal isometric knee extensor (KE) torque, (2) KE rate of torque development (RTD), (3) quadriceps activity and voluntary activation, (4) soleus H-reflex, (5) quadriceps single (T TW ) and double twitch torque (T DB100 ) and contraction time (CT TW ). There were no significant differences between groups at baseline for any of the observed parameters. Significant differences were found between groups in terms of change in RTD ( p = 0.04). Cohen’s d showed a positive significant effect (0.43) in the SL group and a negative significant effect (?0.58) in the AL group. The difference between groups in changes in CT TW as a function of altitude was on the edge of significance ( p = 0.077). CT TW increased by 8.1 ± 9.0% in the AL group ( p = 0.036) and remained statistically unchanged in the SL group. Only the AL group showed a relationship between changes in T TW and T DB100 and changes in RTD at posttest ( p = 0.022 and p = 0.016, respectively). Altitude induced differences in muscular adaptations likely due to greater peripheral fatigue.

Keywords: elite athlete; strength training; twitch; H-reflex; voluntary activation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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