Učinek preventivne lokalne vibracijske terapije na zapoznelo mišično bolečino in sposobnost zavestne kontrakcije skeletnih mišic - študija več primerov : diplomsko delo

Jereb, Gal (avtor), Kacin, Alan (mentor), Rugelj, Darja (recenzent)

Uvod: Zapoznela mišična bolečina (ZMB) nastane zaradi povečanja intenzivnosti ali obsega vadbe. Najpogosteje se pojavi po ekscentričnih mišičnih kontrakcijah in nastopi od 8 do 20 ur po vadbi; vrh doseže med 24 in 48 ur po vadbi in nato počasi izzveni. Kaže se kot bolečina v mišicah z znaki vnetja; zmanjšani sta tudi mišična sila in obseg gibljivost. Običajno ZMB blažimo, ko se že razvije. Obstajajo pa metode, s katerimi lahko zmanjšamo ali preprečimo nastanek ZMB. Ena iz med novejših tehnik je lokalna vibracijska terapija (LVT), vendar eksperimentalnih dokazov o njeni učinkovitosti še ni dovolj. Namen: Namen študije več primerov je bilo pilotiranje raziskovalnega protokola za proučevanje učinkov preventivne lokalne vibracijske terapije na razvoj zapoznele mišične bolečine in sočasnega upada zavestne mišične kontraktilnosti po intenzivni ekscentrični vadbi. Metode dela: Štirim preiskovancem je bila s štirimi nizi z desetimi ponovitvami supramaksimalnih ekscentričnih kontrakcij povzročena ZMB v fleksorjih komolca obeh zgornjih udov. Pred vadbo sta bili izmerjeni algometrija na pritisk in zmogljivost mišic z izokinetičnim dinamometrom. Te meritve so bile ponovljene 24, 48 in 72 ur po vadbi, ko je bila s pomočjo vizualne analogne lestvice ocenjena še bolečina v mišici. Tik pred vadbo je bila izvedena LVT na fleksorjih komolca eksperimentalnega zgornjega uda, kontrolni ud pa ni prejel nobene terapije. Rezultati: Bolečina med izometričnimi in izokinetičnimi kontrakcijami je bila na kontrolnem udu bolj intenzivna , vendar so razlike majhne. Opazili smo spremenjen časovni potek ZMB. Na LVT udu je bil prag bolečine na pritisk višji kot na kontrolnem udu. Povprečne vrednosti zavestne mišične kontrakcije ne pokažejo vidnih izboljšav na LVT udu. Razprava in zaključek: Rezultati kažejo, da uporaba preventivne LVT rahlo zmanjša intenzivnost bolečine med zavestnimi kontrakcijami mišic, nima pa vpliva na največji navor in moč med zavestno mišično kontrakcijo. S pilotnim protokolom smo pokazali, da lahko zaznamo spremembe v nezavedni in zavestni kontraktilnosti mišice po intenzivni ekscentrični vadbi. Za ugotavljanje učinkovitosti LVT pa je potrebno v prihodnje uporabiti drugačen protokol njene aplikacije. Rezultati pričujoče pilotne raziskave kažejo velike individualne razlike, zato je potrebno testiranje na večjem vzorcu.

• Jezik: Slovenski jezik
• Ključne besede: diplomska dela, fizioterapija, zapoznela mišična bolečina, lokalna vibracijska terapija, zavestna mišična kontrakcija, fleksorji komolca
• Vrsta gradiva: Diplomsko delo/naloga
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: ZF - Zdravstvena fakulteta
• Kraj izida: Ljubljana
• Založnik: [G. Jereb]
• Leto izida: 2022
• Št. strani: 26 str.
• PID: 20.500.12556/RUL-136766
• UDK: 615.8
• COBISS.SI-ID: 108479747
• Datum objave v RUL: 20.05.2022

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: The effect of preventive local vibration therapy on delayed muscle soreness and the ability of voluntary skeletal muscle contractility - a study of several cases : diploma work

Izvleček

Introduction: Delayed onset muscle soreness (DOMS) is caused by increased intensity or volume of exercise. It most commonly occurs after eccentric muscle contraction, 8 to 20 hours after exercise, peaks between 24 and 48 hours after, and then slowly subsides. It manifests as muscle pain with signs of inflammation, decreased strength, and reduced range of motion. DOMS is usually alleviated once it has developed but there are some methods we can use to prevent or at least limit the development. One of the newest techniques is local vibration therapy (LVT) but there is not enough experimental evidence of its effectiveness. Purpose: This study of several cases aims to pilot a research protocol for studying the effects of preventive local vibration therapy on the development of DOMS and potential changes in voluntary contractility of skeletal muscles after intensive eccentric exercise. Methods: There were four subjects in this study. DOMS in their elbow flexors of both upper limbs was induced with four sets of ten repetitions of supramaximal eccentric elbow extensions. Before exercise, we measured pressure-pain threshold and muscle performance using an isokinetic dynamometer. These measures were repeated 24, 48, and 72 hours later when we also measured DOMS intensity using a visual analog scale. Just before the exercises, one minute of vibration therapy was applied to the elbow flexors of the experimental arm while the control arm did not receive any intervention. Results: Pain during isometric and isokinetic contractions was more intense on the control arm but there were small differences. The changed time course of DOMS was noticeable. The pressure-pain threshold was higher on the experimental arm than on the control arm. Mean values of voluntary muscle contractions did not show visible improvements on the experimental arm versus the control arm. Discussion and conclusion: The results show that the use of vibration therapy slightly reduces the intensity of DOMS during voluntary contractions but has no effects on maximal torque and strength during voluntary muscle contraction. The pilot protocol showed that changes in unconscious and volunatry muscle contractility can be detected after intense eccentric exercise, however a different application protocol of vibration therapy needs to be used in the future to determine its effectiveness. The results of the present pilot study show large individual differences, therefore testing on a larger sample is necessary.

• Ključne besede: diploma theses, physiotherapy, delayed onset muscle soreness, local vibration therapy, voluntary muscle contraction, elbow flexors