The aim of the study: to determine and compare the low frequency fatigue of the legs’ muscles of 12–13 years old boys during the isometric and eccentric-concentric physical exercises.
The objectives of the study:
1. To determine the exertion of low frequency fatigue during isometric exercises in boys.
2. To determine the exertion of low frequency fatigue during eccentric-concentric exercises in boys.
3. To compare the exertion of low frequency fatigue among isometric and eccentric-concentric exercises in boys.
Subjects. Healthy boys (n = 6) aged 12–13 (12,4 ± 0,6) who do not participate in sports regularly but attend the classes of physical education twice a week. The rest period between the studies was three weeks. The tension was set up at 50 % MVS level. After that the values of the contractions and relaxations of the muscles were registered as follows:
1. The strength of muscle contraction caused by a single electric stimulus (Pt);
2. The strength of muscle contraction (P) caused by the following regiments of electrostimulation: 7 Hz (P7), 10 Hz (P10), 15 Hz (P15), 20 Hz (P20), and 100 Hz (P100) (the duration of the stimulation – 1 s, and the rest intervals between stimulations – 5 s);
3. Maximal voluntary strength (MVS) of muscle contractions (three trials every 3 minutes);
4. The workout (10 minutes of slow pedaling on the ergometer: the heart rate contractions from 110 to 130 times per minute);
5. Isometric workload: 18 times, each lasts 15 s, 40 % MVS contraction... [to full text]
| Identifer | oai:union.ndltd.org:LABT_ETD/oai:elaba.lt:LT-eLABa-0001:E.02~2006~D_20060522_125049-48828 |
| Date | 22 May 2006 |
| Creators | Mikšta, Audrius |
| Contributors | Mockus, Pranas, Zuozienė, Ilona Judita, Sreckis, Vytautas, Čižauskas, Antanas, Skarbalius, Antanas, Milašius, Kazimieras, Gulbinas, Remigijus, Kšanauskienė, Liudmila, Lithuanian Academy of Physical Education |
| Publisher | Lithuanian Academic Libraries Network (LABT), Lithuanian Academy of Physical Education |
| Source Sets | Lithuanian ETD submission system |
| Language | Lithuanian |
| Detected Language | English |
| Type | Master thesis |
| Format | application/pdf |
| Source | http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060522_125049-48828 |
| Rights | Unrestricted |
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