Browsing NTNU Open by Author "Hoff, Jan"
Now showing items 1-16 of 16
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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 ... -
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) ... -
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) -
Early maximal strength training improves leg strength and postural stability in elderly following hip fracture surgery
Berg, Ole Kristian; Stutzer, Jens-Meinhard; Hoff, Jan; Wang, Eivind (Peer reviewed; Journal article, 2021)Introduction: Hip fractures predominantly occur in the geriatric population and results in increased physical inactivity and reduced independency, largely influenced by a downward spiral of ambulatory capacity, related to ... -
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 ... -
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 ... -
Impaired skeletal health and neuromuscular function among amphetamine users in clinical treatment
Mosti, Mats Peder; Flemmen, Grete; Hoff, Jan; Stunes, Astrid Kamilla; Syversen, Unni; Wang, Eivind (Journal article; Peer reviewed, 2016)Summary This study examined musculoskeletal health in amphetamine users, compared with healthy age-matched controls. We show that amphetamine users have reduced bone mass at several skeletal sites and attenuated maximal ... -
Maximal strength training : the impact of eccentric overload
Tøien, Tiril; Haglo, Håvard Pedersen; Unhjem, Runar Jakobsen; Hoff, Jan; Wang, Eivind (Peer reviewed; Journal article, 2018)The search for the most potent strength training intervention is continuous. Maximal strength training (MST) yields large improvements in force-generating capacity (FGC), largely attributed to efferent neural drive ... -
Maximal strength training as a physical rehabilitation for patients with substance use disorder; a randomized controlled trial
Unhjem, Runar Jakobsen; Flemmen, Grete; Hoff, Jan; Wang, Eivind (Peer reviewed; Journal article, 2016)Background:Patients with substance use disorder (SUD) suffer from multiple health and psychosocial problems.Because poor physical capacities following an inactive lifestyle may indeed contribute to these problems, ... -
Maximal strength training in patients with inflammatory rheumatic disease: implications for physical function and quality of life
Haglo, Håvard Pedersen; Berg, Ole Kristian; Hoff, Jan; Helgerud, Jan; Wang, Eivind (Journal article; Peer reviewed, 2022)Purpose: Patients with inflammatory rheumatic disease (IRD) have attenuated muscle strength in the lower extremities, resulting in impaired physical function and quality of life. Although maximal strength training (MST), ... -
Prediction of upper extremity peak oxygen consumption from heart rate during submaximal arm cycling in young and middle-aged adults
Helgerud, Jan; Øiestad, Britt Elin; Wang, Eivind; Hoff, Jan (Peer reviewed; Journal article, 2019)Based on the strong linear relationship between heart rate (HR) and oxygen consumption, the Åstrand–Ryhming cycle ergometer test (Astrand and Ryhming in J Appl Physiol 7:218–221, 1954) is a widely used submaximal test to ... -
Prediction of VO2max from submaximal exercise using the smartphone application myworkout GO : validation study of a digital health method
Helgerud, Jan; Haglo, Håvard Pedersen; Hoff, Jan (Peer reviewed; Journal article, 2022)Background: Physical inactivity remains the largest risk factor for the development of cardiovascular disease worldwide. Wearable devices have become a popular method of measuring activity-based outcomes and facilitating ... -
Reduced peak oxygen uptake and implications for cardiovascular health and quality of life in patients with schizophrenia
Heggelund, Jørn; Hoff, Jan; Helgerud, Jan; Nilsberg, Geir Erling; Morken, Gunnar (Journal article; Peer reviewed, 2011)Background: Peak oxygen uptake (VO2peak) is a strong predictor of cardiovascular disease (CVD) and all-cause mortality, but is inadequately described in patients with schizophrenia. The aim of this study was to ... -
Smartphone-assisted high-intensity interval training in inflammatory rheumatic disease patients : randomized controlled trial
Haglo, Håvard Pedersen; Wang, Eivind; Berg, Ole Kristian; Hoff, Jan; Helgerud, Jan (Peer reviewed; Journal article, 2021)Background: Patients with inflammatory rheumatic diseases (IRDs) experience disease-related barriers to physical training. Compared with the general population, IRD patients are reported to have reduced maximal oxygen ... -
Therapeutic effects of maximal strength training on walking efficiency in patients with schizophrenia - a pilot study
Heggelund, Jørn; Morken, Gunnar; Helgerud, Jan; Nilsberg, Geir Erling; Hoff, Jan (Journal article; Peer reviewed, 2012)Background Patients with schizophrenia frequently have disabling gait deficits. The net mechanical efficiency of walking (ϵ net ) is an accurate measure often used to evaluate walking performance. Patients with gait ...