Title CIKLUS ISTEZANJA I SKRAĆIVANJA KAO OSNOVA PLIOMETRIJSKOG TRENINGA Title (english) STRETCH-SHORTENING CYCLE AS A BASIS OF PLYOMETRIC TRAINING Author Ivan Matić Mentor Pavle Mikulić (mentor)Committee member Pavle Mikulić (predsjednik povjerenstva)Committee member Goran Marković (član povjerenstva)Committee member Cvita Gregov (član povjerenstva)Granter University of Zagreb Defense date and country 2023-09-19, Croatia Scientific / art field, SOCIAL SCIENCES Abstract Pliometrijski trening oblik je treninga u kojem dominiraju skakački ili bacački pokreti, odnosno balistički pokreti koji u svojoj izvedbi sadrže tzv. ekscentrično-koncentrični mišićni režim rada. Ciklus istezanja i skraćivanja, kao jedinstvena kontrakcija mišića, u stranoj i znanstvenoj literaturi označava naziv „stretch-shortening cycle“ – SSC. Pliometrijske aktivnosti uslijed ekscentrične kontrakcije pohranjuju elastičnu potencijalnu energiju u mišićno-tetivnom sustavu te se oslobađanjem te energije tijekom koncentrične kontrakcije maksimizira mišićna sila. Skeletni mišić čovjeka ne sadrži isključivo mišić nego i elemente tetiva. Mišićno- tetivna mehanika, u kojoj tetive svojim specifičnim svojstvima uvelike doprinose ovom kompleksnom fenomenu, utječe na maksimalno generiranje sile, rada i snage. Ako se želi proizvesti što veća sila u što kraćoj jedinici vremena onda je iznimno važno da pasivne strukture sadrže dostatnu krutost. Njeno svojstvo elastičnosti, odnosno krutosti, uvelike će ovisiti o vrsti primijenjenog treninga. U svrhu što boljeg opisa i shvaćanja SSC-a, funkcija skeletnih mišića je objašnjena u sinergiji s radom ostalih sustava lokomocije. Cilj ovog rada bio je detaljno opisati i objasniti – s anatomskog, fiziološkog i biomehaničkog stajališta – ciklus istezanja i skraćivanja mišića i njegov značaj za izvedbu balističkih vježbi koje se tipično provode u kontekstu pliometrijskog treninga.
Abstract (english) Plyometric training is a form of training that involves jumping or throwing movements, i.e. ballistic movements that contain the so-called eccentric-concentric muscle regime of work. The cycle of stretching and shortening, as a unique muscle contraction, is reffered to in foreign and scientific literature as the „stretch-shortening cycle“ – SSC. Plyometric activities due to eccentric contraction store elastic potential energy in the muscle-tendon system and by releasing this energy during concentric contraction muscle force is maximized. Human skeletal muscle does not only contain muscle, but also elements of tendons. Muscle-tendon mechanics, in which the tendons with their specific properties greatly contribute to this complex phenomenon, affect the maximum generation of force, work and power. If one wants to produce as much force as possible in the shortest unit of time, then passive structures must contain sufficient stiffness. Its property of elasticity and stifness will largely depend on the type of training applied. To better describe and understand SSC, the function of skeletal muscles is explained in synergy with the work of other locomotion systems. This paper aimed to describe and explain in detail – from an anatomical, physiological and biomechanical point of view – the muscle stretch-shortening cycle and its significance for the performance of ballistic exercises that are typically performed in the context of plyometric training.
Keywords
mišićna akcija
krutost
tetiva
elastična potencijalna energija
balistički pokret
Keywords (english)
muscle action
stiffness
tendon
elastic potential energy
ballistic movement
Language croatian URN:NBN urn:nbn:hr:117:417805 Study programme Title: Kinesiology; specializations in: Kinesiology in Education and Track-and-Field, Kinesiology in Education and Fitness, Kinesiology in Education and Wrestling, Kinesiology in Education and Sailing, Kinesiology in Education and Windsurfing, Kinesiology in Education and Judo, Kinesiology in Education and Kayaking, Kinesiology in Education and Kinesiological Recreation, Kinesiology in Education and Kinesitherapy, Kinesiology in Education and Physical Conditioning of Athletes, Kinesiology in Education and Basketball, Kinesiology in Education and Football, Kinesiology in Education and Volleyball, Kinesiology in Education and Basic Kinesiological Transformations, Kinesiology in Education and Dancing, Kinesiology in Education and Swimming, Kinesiology in Education and Rhythmic Gymnastics, Kinesiology in Education and Handball, Kinesiology in Education and Skiing, Kinesiology in Education and Artistic Gymnastics, Kinesiology in Education and Management of Sport, Kinesiology in Education and Tennis, Kinesiology in Education and Rowing Type of resource Text File origin Born digital Access conditions Access restricted to authenticated users Terms of use Created on 2023-09-26 07:49:22
