High-volume intermittent maximal intensity isometric exercise caused great stress, although central motor fatigue did not occur
| العنوان: | High-volume intermittent maximal intensity isometric exercise caused great stress, although central motor fatigue did not occur |
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| المؤلفون: | Diana Karanauskiene, Giedre Jurgelaitiene, Albertas Skurvydas, Jurate Stanislovaitiene, Kristina Bradauskiene, Andrius Satas, Daiva Majauskiene, Dovile Valanciene, Kristina Motiejunaite, Agne Cekanauskaite |
| المساهمون: | Institute of sport |
| المصدر: | Biology of sport, Warsaw : Institute of sport, 2021, vol. 38, no. 3, p. 315-323 Biology of Sport Biology of Sport, Vol 38, Iss 3, Pp 315-323 (2020) |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | medicine.medical_specialty, high-intensity isometric exercise, QH301-705.5, Physical Therapy, Sports Therapy and Rehabilitation, Isometric exercise, Knee extension, Body weight, high-volume, physiological stress, peripheral and central fatigue, rate of force development, muscle length, Physiology (medical), Internal medicine, Heart rate, medicine, Orthopedics and Sports Medicine, Biology (General), Cortisol level, Muscle force, Original Paper, business.industry, Intensity (physics), Sports medicine, Cardiology, business, RC1200-1245, Body mass index |
| الوصف: | To establish whether very high-volume, high-intensity isometric exercise causes stress to the body and how it affects peripheral and central fatigue. Nineteen physically active healthy male subjects(21.2 ± 1.7 years; height – 1.82 ± 0.41 m, body weight – 79.9 ± 4.5 kg; body mass index – 24.3 ± 2.1 kg/m2 ) volunteered to participate in this study. They participated in two experiments 3–5 days apart. Each experiment comprised six series of 60-s maximum voluntary contraction (MVC) force (knee extension) achieved as rapidly as possible. This very high-volume, high-intensity exercise (HVHIE) was performed at different quadriceps muscle lengths: short (SL) and long (LL). The MVC and the electrically stimulated contractile properties of the muscle were measured prior to HVHIE, immediately after and 3 min after each series, and at 3, 10, and 30 min after the end of HVHIE. We found that HVHIE caused high levels of stress (cortisol levels approximately doubled, heart rate and the root mean square successive difference of interval (RMSSD) decreased by about 75%); lactate increased to 8–11 mmol/L, voluntary and 100 Hz stimulation-induced force (recorded immediately after HVHIE) decreased by 55% at LL and 40% at SL. However, the central activation ratio during MVC did not change after either exercise. Isometric HVHIE performed using one leg caused high levels of stress (RMSSD decreased, cortisol increased after HVHIE equally at SL and LL; La increased more while exercising at LL) and the voluntary and electrostimulation-induced muscle force significantly decreased, but muscle central activation during MVC did not decrease. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0860-021X 2083-1862 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7015db638aa35e9e522760b11d09eb4eTest https://doi.org/10.5114/biolsport.2021.99322Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7015db638aa35e9e522760b11d09eb4e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0860021X 20831862 |
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