Muscle functional characteristics of Latvian weightlifters in lightweight categories

Leonīds Čupriks, Uģis Ciematnieks, Gundega Knipše, Aleksandra Čuprika, Māris Lesčinskis, Sergejs Saulīte

Abstract


To predict the potential physical abilities of weightlifters, it is recommended to follow the complex methodology for assessing the weightlifter in certain weightlifting competition exercise. Our aim of the study was to investigate the muscle contraction and relaxation process of Latvian weightlifters of lightweight categories (-56kg, -62kg) in the competition-like situation. Tests were conducted on a dynamometer system REV9000 using leg flexion and extension in knee joint. Establishing the contraction and relaxation processes of weightlifters nerve muscle apparatus in electromiograhical curves allowed us to clear out five main muscle contraction and relaxation interactional patterns: athletes straining muscles very quickly with very fast relaxation, athletes strain and relax their muscles relatively fast; athletes straining muscles fast with slow relaxation , slowly straining the muscles with quick relaxation, slowly contracting the muscles and slowly relax them. Latvian weight lifters training process requires further attention in improvement of muscle relaxation and tightening processes with selection of appropriate training resources and means.

Keywords


muscles; dynamometer; torque; electromyogram; dynamogram; weightlifting

Full Text:

PDF

References


Basmajian, J. V., Blumenstein, R. (1980). Electrode placement for EMG biofeedback. Baltimore, MD, Williams&Wilkins, p.16. – 89

Catani, F. User Manual REV 9000. (1992). Forli: Technogym Research Centre, p.55-60

Čupriks, L. (2003). Optimāla izmantoto līdzekļu ietekme uz vingrinājuma labāku izpildījumu sacensībās. LSPA zinātniskie raksti, Rīga, lpp 41. – 46

Mayer, T., Smith, S., Keeley, J., Money, V. (1985). Quantification of Lumbar Function Part 2: Sagittal Plane Trunk Strength in Chronic Low Back Pain Patients. Spine, N10, p.765 – 772

Frolovs, V., Krasovs, J., Upmalis, J. (1987). Svarcelšana iesācējiem. Rīga, Avots, lpp 86

Sondeberg, G.L., Cook, T.M. (1983). An electromyographic analysis of quadriceps femoris muscle settinf and straight leg raising. Physical Therapy, N63. p.1434 – 1438.

Высочин, Ю.В., Денисенко, Ю.П. (2001). Факторы, лимитируюшие прогресс спортивных результатов и квалификации футболистов. Теория и практика физичекой культуры, № 2. ц. 17 - 21

Медведев, А.С. (1986). Программа многолетней тренировки в тяжелой атлетике. Москва, Физкультура и спорт, c. 10 – 81

Шакирзянов, М.С., Упмалис, Я.Р., Красов, Е.А., Чуприк, Л.В., Сартапутнис, В.П. (1987). Импульс, как показатель уровня тренированности в тяжелой атлетике. Актуальные проблемы физической культуры и спорта. Сборник статей. Рига, с. 112. - 124




DOI: https://doi.org/10.17770/sie2013vol2.609

Refbacks

  • There are currently no refbacks.