Browsing NTNU Open by Author "Helgerud, Jan"
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Abdominal aerobic endurance exercise reveals spot reduction exists : a randomized controlled trial
Brobakken, Mathias Forsberg; Krogsæter, Iben; Helgerud, Jan; Wang, Eivind; Hoff, Jan (Peer reviewed; Journal article, 2023)The existence of spot reduction, exercise-induced local body fat reduction, has been debated for half a century. Although the evidence is equivocal, no study has applied aerobic endurance training closely matching interventions ... -
Aerob utholdenhetstrening for bedret hjertefunksjon og helse hos oppdrettslaks. Prosjektperiode 1.6.2007 – 10.10.2008
Takle, Harald Rune; Kristensen, Torstein; Helland, Ståle Johannes; Grisdale-Helland, Barbara; Poppe, Trygve T; Tørud, Brit; Helgerud, Jan (Nofima rapportserie;, Research report, 2008)Prosjektet hadde som hovedmål å undersøke effekten av aerob utholdenhetstrening som metode for å bedre hjertefunksjon og helse hos laks. Prosjektet gav klare indikasjoner på at trening av lakseparr har positive effekter ... -
Aerobic and anaerobic speed predicts 800-m running performance in young recreational runners
Støren, Øyvind; Helgerud, Jan; Johansen, Jan-Michael; Gjerløw, Lars Erik; Aamlid, Aanund; Støa, Eva Maria (Peer reviewed; Journal article, 2021)The main aim was to investigate the impact of maximal aerobic speed (MAS), maximal anaerobic speed (MANS), and time to exhaustion (TTE) at 130% MAS, on 800-m running time performance (800TT). A second aim was to investigate ... -
Aerobic High-Intensity Interval Training Improve VO2max More Than Sprint Interval Training
Boye, Anders Johan Nesheim (Master thesis, 2020)Purpose: To compare the effects of sprint interval training (SIT) and high-intensity interval training (HIIT) on endurance performance and endurance performance determinants. Methods: Twenty-three healthy, trained female ... -
Aerobic high-intensity intervals improve V̇O2max more than supramaximal sprint intervals in females, similar to males
Helgerud, Jan; Hov, Håkon; Mehus, Håkon Andre; Balto, Bård; Boye, Anders Johan Nesheim; Finsås, Lars; Hoff, Jan; Wang, Eivind (Journal article; Peer reviewed, 2023)Introduction: Maximal oxygen uptake (V̇O2max) is a pivotal factor for aerobic endurance performance. Recently, aerobic high-intensity interval training (HIIT) was documented to be superior to sprint interval training (SIT) ... -
An inconvenient truth:The association between maximal strength training, rate of force development, one repetition maximum, work economy and quality of life amongst persons with inflammatory rheumatic disease.
Wesley, Callan (Master thesis, 2020)Bakgrunn Revmatismer er klassifisert som kroniske, systemiske og autoimmune sykdommer. Symptomer inkluderer synovial betennelse, hovne ledd, deformasjon av brusk og beinstrukturer. Systemiske funksjoner som hjerte-, skjelett- ... -
Arm crank and wheelchair ergometry produce similar peak oxygen uptake but different work economy values in individuals with spinal cord injury
Tørhaug, Tom; Brurok, Berit; Hoff, Jan; Helgerud, Jan; Leivseth, Gunnar (Journal article; Peer reviewed, 2016)Objective. To study whether values for peak oxygen uptake (VO2peak) and work economy (WE) at a standardized workload are different when tested by arm crank ergometry (ACE) and wheelchair ergometry (WCE). Methods. Twelve ... -
Arm Cycling Combined with Passive Leg Cycling Enhances VO2peak in Persons with Spinal Cord Injury Above the Sixth Thoracic Vertebra
Tørhaug, Tom; Brurok, Berit; Hoff, Jan; Helgerud, Jan; Leivseth, Gunnar (Journal article; Peer reviewed, 2018) -
Blood flow regulation in an integrated system determining aerobic endurance
Nyberg, Stian Kwak (Doctoral theses at NTNU;2019:188, Doctoral thesis, 2019) -
Disease resistance is related to inherent swimming performance in Atlantic salmon
Castro, Vicente; Grisdale-Helland, Barbara; Jørgensen, Sven Martin; Helgerud, Jan; Claireaux, Guy; Farrell, Anthony P.; Krasnov, Aleksei; Helland, Ståle; Takle, Harald Rune (Journal article; Peer reviewed, 2013)Background Like humans, fish can be classified according to their athletic performance. Sustained exercise training of fish can improve growth and physical capacity, and recent results have documented improved disease ... -
Effect of Aerobic Exercise Intensity on Energy Expenditure and Weight Loss in Severe Obesity-A Randomized Controlled Trial
Berge, Jarle; Hjelmesæth, Jøran; Hertel, Jens Kristoffer; Gjevestad, Espen Svendsen; Småstuen, Milada Cvancarova; Johnson, Line Kristin; Martins, Catia; Andersen, Eivind; Helgerud, Jan; Støren, Øyvind (Peer reviewed; Journal article, 2021)Objective This study aimed to compare the effects of two aerobic exercise programs of different intensities on energy expenditure. Methods This was a single‐center randomized controlled trial of patients with severe obesity ... -
Effect of aerobic exercise intensity on health-related quality of life in severe obesity: a randomized controlled trial
Berge, Jarle; Hjelmesæth, Jøran Sture; Kolotkin, Ronette Loganzo; Støren, Øyvind; Bratland-Sanda, Solfrid; Hertel, Jens Kristoffer; Gjevestad, Espen Svendsen; Småstuen, Milada Cvancarova; Helgerud, Jan; Bernklev, Tomm (Peer reviewed; Journal article, 2022)Background Aerobic exercise is an important part of obesity treatment and may improve health-related quality of life (HRQOL). The objective of this study was to compare the effect of two different exercise programs on ... -
Effect of lower extremity functional electrical stimulation pulsed isometric contractions on arm cycling peak oxygen uptake in spinal cord injured individuals
Brurok, Berit; Tørhaug, Tom; Karlsen, Trine; Leivseth, Gunnar; Helgerud, Jan; Hoff, Jan (Journal article; Peer reviewed, 2013)Objective: To compare peak oxygen uptake (VO2peak) between: (i) functional electrical stimulation lower extremity pulsed isometric muscle contractions combined with arm cycling (FES iso hybrid), (ii) functional electrical ... -
Effects of high-intensity exercise on determinants of endurance performance and quality of life in inflammatory rheumatic disease: a real-world randomized controlled trial
Schwendinger, Fabian (Master thesis, 2020)Background: High-intensity interval training (HIIT) was previously shown to be a safe strategy to improve cardiorespiratory fitness in certain inflammatory rheumatic diseases (IRDs) in clinical settings. However, it is ... -
Effects of individual changes in training distribution on maximal aerobic capacity in well-trained cross-country skiers: A follow-up study
Johansen, Jan-Michael; Sunde, Arnstein; Helgerud, Jan; Gjerløw, Lars Erik; Støren, Øyvind (Peer reviewed; Journal article, 2021)The purpose of this study was to evaluate individual changes in training distribution and the subsequent effects on maximal oxygen uptake (VO2max). The participants were well-trained cross-country skiers who had performed ... -
Exercise testing and training after spinal cord injury; Strengthen the endurance from arm crank and wheelchair ergometry, lower extremity passive and electro- stimulated movements and upper body bench press exercise.
Tørhaug, Tom (Doctoral theses at NTNU;2018:43, Doctoral thesis, 2018)Avhandlingen beskriver test og treningsresponser hos en gruppe ryggmargsskadde. Testing har foregått i samarbeid med erfarne treningsfysiologer på validert medisin-tekniskutstyr med støtte fra svært gode laboratoriefasiliteter ... -
Factors Influencing Running Velocity at Lactate Threshold in Male and Female Runners at Different Levels of Performance
Støa, Eva Maria; Helgerud, Jan; Rønnestad, Bent; Hansen, Joar; Ellefsen, Stian; Støren, Øyvind (Peer reviewed; Journal article, 2020)Background: The primary aim was to examine the relationship between lactate threshold (LT) expressed as percentage of maximal oxygen uptake (VO2max) and running velocity at LT (LTV). A secondary aim was to investigate to ... -
Heat tolerance during uncompensable heat stress in men and women wearing firefighter personal protective equipment
Renberg, Julie; Lignier, Maxime Jeanovitch; Wiggen, Øystein; Færevik, Hilde; Helgerud, Jan; Sandsund, Mariann (Peer reviewed; Journal article, 2022)Firefighters run a risk of heat strain during occupational tasks. The number of female firefighters has been increasing, but research relevant to this group is still scarce. We aimed to investigate whether there are any ... -
Hvordan påvirker styrke- og utholdenhetstrening pasienter med multippel sklerose?
Refsnes, Kristin Marie Skjelbred (Master thesis, 2024)Mål: Evaluere effekten av kombinert styrke- og kondisjonstrening i en norsk gruppe med MS-pasienter. I tillegg vil vi undersøke om det er noen sammenheng mellom treningseffekt, funksjonelle fysiske tester, smerte, utmattelse ... -
Large inter-individual differences in responses to a block of high intensity aerobic interval training: A case series in national-level cyclists and triathletes
Bratland-Sanda, Solfrid; Pedersen, Frank. G.; Haave, Marius Ness; Helgerud, Jan; Støren, Øyvind (Journal article; Peer reviewed, 2020)The aim was to investigate individual responses on VO2maxand performance to a block of high intensity aerobic interval training (HIIT) in national-level endurance athletes. METHODS: National-level cyclists and triathletes ...