Blar i NTNU Open på forfatter "Tjønna, Arnt Erik"
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Evidence against a Beneficial Effect of Irisin in Humans
Raschke, Silja; Elsen, Manuela; Gassenhuber, Hans; Sommerfeld, Mark; Schwahn, Uwe; Brockmann, Barbara; Jung, Raphael; Wisløff, Ulrik; Tjønna, Arnt Erik; Raastad, Truls; Hallén, Jostein; Norheim, Frode; Drevon, Christian A; Romacho, Tania; Eckardt, Kristin; Eckel, Juergen (Journal article; Peer reviewed, 2013)Brown adipose tissue has gained interest as a potential target to treat obesity and metabolic diseases. Irisin is a newly identified hormone secreted from skeletal muscle enhancing browning of white fat cells, which ... -
EX-MET study: Exercise in prevention on of metabolic syndrome - A randomized multicenter trial: Rational and design
Tjønna, Arnt Erik; Ramos, Joyce S.; Pressler, Axel; Halle, Martin; Jungbluth, Klaus; Ermacora, Erika; Salvesen, Øyvind; Rodrigues, Jhennyfer; Bueno, Carlos Roberto; Munk, Peter Scott; Coombes, Jeff; Wisløff, Ulrik (Journal article; Peer reviewed, 2018)Background Metabolic syndrome substantially increases risk of cardiovascular events. It is therefore imperative to develop or optimize ways to prevent or attenuate this condition. Exercise training has been long recognized ... -
High intensity interval training in reduction of anxiety symptoms in adults with the metabolic syndrome: Secondary analyses from the multicenter study EX-MET
Hagen, Linn Marita (Master thesis, 2020)Sammendrag Bakgrunn. Angstlidelser er assosiert med utviklingen- og progresjon av kardiovaskulære sykdommer. Økt prevalens av angstsymptomer hos individer med metabolsk syndrom har nylig blitt rapportert. Individer med ... -
High-intensity interval training improves obstructive sleep apnoea
Karlsen, Trine; Nes, Bjarne; Tjønna, Arnt Erik; Engstrøm, Morten; Støylen, Asbjørn; Steinshamn, Sigurd Loe (Journal article; Peer reviewed, 2017)Background Three hours per week of vigorous physical activity is found to be associated with reduced odds of sleep-disordered breathing. Aim To investigate whether 12 weeks of high-intensity interval training (HIIT) ... -
Implications of Peak Oxygen Consumption and Visceral Adipose Tissue on the Metabolic Syndrome: A matter of intensity, duration and frequency?: A Randomized Controlled Trial
Fremo, Thomas (Master thesis, 2014)The metabolic syndrome (MetS) is a socioeconomic concern on a worldwide scale. Visceral adipose tissue (VAT) accumulation is a fundamental component of the MetS, and the prevalence of abdominally obese individuals steadily ... -
The inclusion of sprints in low-intensity sessions during the transition period of elite cyclists improves endurance performance 6 weeks into the subsequent preparatory period
Taylor, Madison; Almquist, Nicki Winfield; Rønnestad, Bent; Tjønna, Arnt Erik; Kristoffersen, Morten; Spencer, Matthew; Sandbakk, Øyvind; Skovereng, Knut (Journal article; Peer reviewed, 2021)Purpose: To investigate the effects of including repeated sprints in a weekly low-intensity (LIT) session during a 3-week transition period on cycling performance 6 weeks into the subsequent preparatory period (PREP) in ... -
Low- and High-Volume of Intensive Endurance Training Significantly Improves Maximal Oxygen Uptake after 10-Weeks of Training in Healthy Men
Tjønna, Arnt Erik; Leinan, Ingeborg; Jenssen, Bjørn Munro; Gibala, Martin; Winett, Richard A.; Wisløff, Ulrik; Bartnes, Anette Thoresen (Journal article; Peer reviewed, 2013)Regular exercise training improves maximal oxygen uptake (VO2max), but the optimal intensity and volume necessary to obtain maximal benefit remains to be defined. A growing body of evidence suggests that exercise training ... -
Oxygen uptake during functional activities after stroke - Reliability and validity of a portable ergospirometry system
Gjellesvik, Tor Ivar; Brurok, Berit; Tjønna, Arnt Erik; Tørhaug, Tom; Askim, Torunn (Journal article; Peer reviewed, 2017)Background People with stroke have a low peak aerobic capacity and experience increased effort during performance of daily activities. The purpose of this study was to examine test-retest reliability of a portable ... -
Quantification of Position-Specific In-Season Training Load Relative to Match Load in Professional Football
Rydningen, Robert (Master thesis, 2021)Sammendrag Hensikt: Hensikten med denne studien var å kvantifisere og sammenligne total og høyeste (mest intense 5-minuttersperiode) belastning for 1) normal treningsuke, og 2) kompensasjonsøkten for ikke-starterne med ... -
Relation Between Rural and Urban Schools in Regards to Physical Education Participation, Daily Physical Activity and Cardiorespiratory Fitness - A Cross-Sectional Pilot Study of Norwegian School Children
Rosvold, Guro (Master thesis, 2019)Bakgrunn: En nedgang i fysisk aktivitetsnivå er blitt sett i overgangen fra barn til ungdom. Selv om andelen skolebaserte intervensjoner for å bekjempe nedgangen i fysisk aktivitet (FA) øker, viser rapporter ingen økning ... -
The Effect of Sleep on Physical Performance in Male Elite Soccer Players - a Pilot Prospective Cohort Study
Haugan, Simen (Master thesis, 2021)Bakgrunn: Fotball er ansett som den mest populære sporten i verden, hvor utfallet av en kamp avhenger av en rekke faktorer. Unormalt stort søvntap er etablert å ha en negativ effekt på flere fysiske utholdenhetsvariabler. ... -
The effects of systematic block versus traditional periodization on physiological and performance indicators of well-trained cyclists
Ing, Steven (Master thesis, 2019)Abstract Previous studies have found block periodization to be an effective training organization model for improving endurance performance indicators as well as related physiological capacities in endurance athletes. ... -
The impact of pre-sleep protein ingestion on sleep parameters and recovery markers - A pilot study in proffesional soccer players
Druzkowski, Andreas (Master thesis, 2021)Bakgrunn og formål: Det er vist at inntak av protein før søvn øker proteinsyntesehastigheten i muskler under restitusjon over natten etter økter med høy fysisk anstrengelse. Det er imidlertid ikke etablert hvordan et ... -
The therapeutic potential of high intensity interval training among women with lipedema
Sæther, Johanne (Master thesis, 2023)Bakgrunn Lipødem er en tilstand karakterisert med en symmetrisk sykelig fettansamling. Tilstanden er assosiert og forverres i kombinasjon med fedme. Smerte er en av de vanligste utfordringene og fører til nedsatt ...