Search Results - "Hallén, Jostein"

Effects of adding high‐intensity training during an 8‐week period on maximal oxygen uptake in 12‐year‐old youth athletes by Grendstad, Halvard, Hallén, Jostein

“…Purpose Maximal oxygen uptake (V̇O2max) increases during adolescence parallel to the increase in fat‐free mass (FFM). How much endurance training adds to this…”
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Longitudinal Training-related Hematological Changes in Boys and Girls from Ages 12 to 15 yr by LANDGRAFF, HEGE WILSON, HALLÉN, JOSTEIN

“…PURPOSENatural growth and maturation cause hemoglobin mass (Hbmass) and blood volume (BV) to increase during childhood and adolescence. Whether endurance…”
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Kinematic differences between uphill roller skiing and on-snow skiing using the V2 skating technique by Myklebust, Håvard, Losnegard, Thomas, Hallén, Jostein

“…Purpose Roller skiing is the primary sport-specific training and testing mode during pre-competition periods for cross-country skiers, biathletes, and Nordic…”
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Individual variations in pre‐altitude hemoglobin mass influence hemoglobin mass responses to repeated altitude sojourns by Skattebo, Øyvind, Hallén, Jostein

“…Introduction Previous studies have shown variable within‐subject hemoglobin mass (Hbmass) responses to altitude training. We investigated whether Hbmass…”
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Technique analysis in elite athletes using principal component analysis by Gløersen, Øyvind, Myklebust, Håvard, Hallén, Jostein, Federolf, Peter

“…The aim of this study was to advance current movement analysis methodology to enable a technique analysis in sports facilitating (1) concurrent comparison of…”
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Evidence against a beneficial effect of irisin in humans by Raschke, Silja, Elsen, Manuela, Gassenhuber, Hans, Sommerfeld, Mark, Schwahn, Uwe, Brockmann, Barbara, Jung, Raphael, Wisløff, Ulrik, Tjønna, Arnt E, Raastad, Truls, Hallén, Jostein, Norheim, Frode, Drevon, Christian A, Romacho, Tania, Eckardt, Kristin, Eckel, Juergen

“…Brown adipose tissue has gained interest as a potential target to treat obesity and metabolic diseases. Irisin is a newly identified hormone secreted from…”
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Effects of 150- and 450-mL Acute Blood Losses on Maximal Oxygen Uptake and Exercise Capacity by SKATTEBO, ØYVIND, JOHANSEN, ESPEN SPRO, CAPELLI, CARLO, HALLÉN, JOSTEIN

“…PURPOSEThis study investigated whether maximal oxygen uptake (V˙O2max) and exercise capacity are affected by small acute blood loss (150 mL) and elucidated…”
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Contribution of oxygen extraction fraction to maximal oxygen uptake in healthy young men by Skattebo, Øyvind, Calbet, Jose A. L., Rud, Bjarne, Capelli, Carlo, Hallén, Jostein

“…We analysed the importance of systemic and peripheral arteriovenous O2 difference ( a-v¯O2 difference and a‐vfO2 difference, respectively) and O2 extraction…”
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Hemoglobin Mass and Aerobic Performance at Moderate Altitude in Elite Athletes by Wehrlin, Jon Peter, Marti, Bernard, Hallén, Jostein

“…Fore more than a decade, the live high-train low (LHTL) approach, developed by Levine and Stray-Gundersen, has been widely used by elite endurance athletes…”
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Longitudinal changes in maximal oxygen uptake in adolescent girls and boys with different training backgrounds by Landgraff, Hege Wilson, Riiser, Amund, Lihagen, Maren, Skei, Marius, Leirstein, Svein, Hallén, Jostein

“…The purpose of this study was to investigate the effects of high‐volume endurance training on the development of maximal oxygen uptake (VO2max) in physically…”
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Vitamin C and E supplementation hampers cellular adaptation to endurance training in humans: a double‐blind, randomised, controlled trial by Paulsen, Gøran, Cumming, Kristoffer T., Holden, Geir, Hallén, Jostein, Rønnestad, Bent Ronny, Sveen, Ole, Skaug, Arne, Paur, Ingvild, Bastani, Nasser E., Østgaard, Hege Nymo, Buer, Charlotte, Midttun, Magnus, Freuchen, Fredrik, Wiig, Håvard, Ulseth, Elisabeth Tallaksen, Garthe, Ina, Blomhoff, Rune, Benestad, Haakon B., Raastad, Truls

“…Key points Recent studies have indicated that antioxidant supplementation may blunt adaptations to exercise, such as mitochondrial biogenesis induced by…”
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Aerobic exercise training resets the human skeletal muscle methylome 10 years after breast cancer treatment and survival by Gorski, Piotr P., Raastad, Truls, Ullrich, Max, Turner, Daniel C., Hallén, Jostein, Savari, Sebastian Imre, Nilsen, Tormod S., Sharples, Adam P.

“…Cancer survivors suffer impairments in skeletal muscle in terms of reduced mass and function. Interestingly, human skeletal muscle possesses an epigenetic…”
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Endurance Training Improves Leg Proton Release and Decreases Potassium Release During High‐Intensity Exercise in Normoxia and Hypobaric Hypoxia by Skattebo, Øyvind, Capelli, Carlo, Calbet, Jose A. L., Hallén, Jostein

“…ABSTRACT Aim To assess the impact of endurance training on skeletal muscle release of H+ and K+. Methods Nine participants performed one‐legged knee extension…”
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Increased oxygen extraction and mitochondrial protein expression after small muscle mass endurance training by Skattebo, Øyvind, Capelli, Carlo, Rud, Bjarne, Auensen, Marius, Calbet, Jose A. L., Hallén, Jostein

“…When exercising with a small muscle mass, the mass‐specific O2 delivery exceeds the muscle oxidative capacity resulting in a lower O2 extraction compared with…”
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Kinematical analysis of the V2 ski skating technique: A longitudinal study by Losnegard, Thomas, Myklebust, Håvard, Ehrhardt, Angela, Hallén, Jostein

“…To characterise timing of movements and evaluate performance effects of technique alterations in V2 ski skating, 13 elite male cross-country skiers (age,…”
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Impact of baseline serum ferritin and supplemental iron on altitude‐induced hemoglobin mass response in elite athletes by Koivisto‐Mørk, Anu Elisa, Svendsen, Ida Siobhan, Skattebo, Øyvind, Hallén, Jostein, Paulsen, Gøran

“…The present study explored the impact of pre‐altitude serum (s)‐ferritin and iron supplementation on changes in hemoglobin mass (ΔHbmass) following altitude…”
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Determinants of the maximal functional reserve during repeated supramaximal exercise by humans: The roles of Nrf2/Keap1, antioxidant proteins, muscle phenotype and oxygenation by Galvan-Alvarez, Victor, Martin-Rincon, Marcos, Gallego-Selles, Angel, Martínez Canton, Miriam, HamedChaman, NaDer, Gelabert-Rebato, Miriam, Perez-Valera, Mario, García-Gonzalez, Eduardo, Santana, Alfredo, Holmberg, Hans-Christer, Boushel, Robert, Hallén, Jostein, Calbet, Jose A.L.

“…When high-intensity exercise is performed until exhaustion a “functional reserve” (FR) or capacity to produce power at the same level or higher than reached at…”
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The developing athlete's heart: a cohort study in young athletes transitioning through adolescence by Bjerring, Anders W, Landgraff, Hege EW, Stokke, Thomas M, Murbræch, Klaus, Leirstein, Svein, Aaeng, Anette, Brun, Henrik, Haugaa, Kristina H, Hallén, Jostein, Edvardsen, Thor, Sarvari, Sebastian I

“…Background Athlete's heart is a term used to describe physiological changes in the hearts of athletes, but its early development has not been described in…”
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Determinants and reference values for blood volume and total hemoglobin mass in women and men by Oberholzer, Laura, Montero, David, Robach, Paul, Siebenmann, Christoph, Ryrsøe, Camilla Koch, Bonne, Thomas C., Breenfeldt Andersen, Andreas, Bejder, Jacob, Karlsen, Trine, Edvardsen, Elisabeth, Rønnestad, Bent R., Hamarsland, Håvard, Cepeda‐Lopez, Ana C., Rittweger, Jörn, Treff, Gunnar, Ahlgrim, Christoph, Almquist, Nicki Winfield, Hallén, Jostein, Lundby, Carsten

“…Blood volume (BV) is an important clinical parameter and is usually reported per kg of body mass (BM). When fat mass is elevated, this underestimates BV/BM…”
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Achieving energy balance with a high‐fat meal does not enhance skeletal muscle adaptation and impairs glycaemic response in a sleep‐low training model by Areta, José L., Iraki, Juma, Owens, Daniel J., Joanisse, Sophie, Philp, Andrew, Morton, James P., Hallén, Jostein

“…New Findings What is the central question of this study? Does achieving energy balance mainly with ingested fat in a ‘sleep‐low’ model of training with low…”
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