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Delkropp- eller helkroppsarbete som återhämtningsstrategi efter upprepade högintensiva arbetsbelastningar på stakergometer hos svenska elitlängdskidåkare.: En kvantitativ studie om återhämtningsstrategier
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science.
2018 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Syfte: Studiens syfte var att undersöka skillnaden mellan två olika återhämtningsstrategier, delkroppsarbete (cykelergometer) och helkroppsarbete (rullskidor), avseende effektutveckling vid upprepade högintensiva arbeten på stakergometer. Vidare syftar studien till att undersöka om hjärtfrekvensen och blodlaktatkoncentrationen skiljer sig åt mellan återhämtningsstrategierna.

Metod: Sju elitaktiva manliga skidåkare på nationell nivå rekryterades till studien där en crossovermetod tillämpades. En prolog och tre heat med tre minuter högintensivt arbete genomfördes under varje prestationstillfälle. Återhämtningsstrategierna genomfördes med 16 min arbete på en arbetsbelastning vid ≈ 55% av VO2max. De testvariabler som samlades in var laktatkoncentration, effektutveckling samt hjärtfrekvens.

Resultat: En signifikant lägre laktatkoncentration påvisades efter helkroppsarbete som återhämtningsstrategi. Dock kunde ingen skillnad mellan strategierna påvisas avseende effektutveckling under heaten. Det kunde heller inte påvisas någon skillnad i hjärtfrekvens före eller under heaten.

Slutsatser: Ingen utav de undersökta återhämtningsstrategierna kan rekommenderas framför den andra avseende att optimera sprintprestationsförmågan i längdskidåkning. Däremot visade det sig att helkroppsarbete medförde en lägre blodlaktatkoncentration inför nästkommande heat jämfört mot delkroppsarbete som återhämtningsstrategi.

Abstract [en]

Purpose: The purpose of the study was to investigate the difference between two recovery strategies, lower-body work (cycle) and whole-body work (roller skiing), regarding to power development in repeated maximum workout on double-poling ergometer. Moreover, the study also aims to investigating whether the heart rate and the blood-lactate concentration differ between the recovery strategies.

Method: Seven elite-active male skiers at national level were recruited to the study where a crossover method was applied. A prologue and three heats with three minutes of high-intensity work were performed during each performance. Recovery strategies were carried out with 16 min work at a workload for ≈ 55% of VO2max. The collected test variables in this study were lactate concentration, effect development, and heart rate.

Results: A significant difference was found in the lactate concentration after whole-body work as a recovery strategy. However, there was no difference between the strategies in power development during the heats. Furthermore, no difference in heartrates was detected before or during the heats.

Conclusions: None of the investigated recovery strategies can be recommended above the other in order to optimize the sprint performance in cross-country skiing. However, whole-body work resulted in a lower blood-lactate concentration prior to next heat compared to lower-body work as recovery strategy.

Place, publisher, year, edition, pages
2018.
Keywords [en]
Recovery strategies, Cross-country skiing, Sprint, Lactate, Power development
Keywords [sv]
Återhämtningsstrategi, längdskidåkning, sprint, laktat, effektutveckling
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:du-28158OAI: oai:DiVA.org:du-28158DiVA, id: diva2:1232441
Available from: 2018-07-11 Created: 2018-07-11

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