• Affective Valence and Enjoyment in High- and Moderate-High Intensity Interval Exercise. The Tromsø Exercise Enjoyment Study 

      Hammer, Tord Markussen; Pedersen, Sigurd; Pettersen, Svein Arne; Rognmo, Kamilla; Sagelv, Edvard Hamnvik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-22)
      Introduction: Exercise at high intensity may cause lower affective responses toward exercise compared with moderate intensity exercise. We aimed to elucidate affective valence and enjoyment in high- and moderate-high interval exercise.<p> <p>Methods: Twenty recreationally active participants (9 females, 11 males, age range: 20–51 years) underwent three different treadmill running exercise sessions ...
    • Associations between maximal strength, sprint, and jump height and match physical performance in high‐level female football players 

      Pedersen, Sigurd; Welde, Boye; Sagelv, Edvard Hamnvik; Heitmann, Kim Arne; Randers, Morten B.; Johansen, Dag; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-06)
      Studies on females’ decisive physical components to physical match-play performance are sparse and only emphasize endurance tests. Thus, the influence of maximal strength and power on physical performance during match-play is currently unknown. The aim of this study was to assess the association between one repetition maximum (1RM) half squat strength, 5-, 10-, and 15-m sprint times, countermovement ...
    • The bidirectional associations between leisure time physical activity change and body mass index gain. The Tromsø Study 1974–2016 

      Sagelv, Edvard Hamnvik; Ekelund, Ulf; Hopstock, Laila Arnesdatter; Fimland, Marius Steiro; Løvsletten, Ola; Wilsgaard, Tom; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)
      Objectives: To examine whether leisure time physical activity changes predict subsequent body mass index (BMI) changes, and conversely, whether BMI changes predict subsequent leisure time physical activity changes. <p> <p>Methods: This prospective cohort study included adults attending ≥3 consecutive Tromsø Study surveys (time: T1, T2, T3) during 1974–2016 (n = 10779). If participants attended ...
    • A comparison between two different conditions of breaking up sedentary behaviour on glucose metabolism 

      Sagelv, Edvard Hamnvik; Ekelund, Ulf; Stensrud, Trine (Conference object; Konferansebidrag, 2016-05-30)
      Conclusion: There is no effect of either breaking up sedentary behaviour each hour or performing 30 minutes of vigorous physical activity in one bout compared with prolonged sitting for six hours on glucose metabolism.
    • Complex lifestyle intervention among inactive older adults with elevated cardiovascular disease risk and obesity: a mixed-method, single-arm feasibility study for RESTART—a randomized controlled trial 

      Deraas, Trygve Sigvart; Hopstock, Laila Arnesdatter; Henriksen, André; Morseth, Bente; Sand, Anne-Sofie; Njølstad, Inger; Pedersen, Sigurd; Sagelv, Edvard Hamnvik; Johansson, Jonas; Grimsgaard, Sameline (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-27)
      Background - Physical inactivity and obesity are global public health challenges. Older adults are important to target for prevention and management of disease and chronic conditions. However, many individuals struggle with maintaining increased physical activity (PA) and improved diet. This feasibility study provides the foundation for the RESTART trial, a randomized controlled trial (RCT) to test ...
    • Criterion validity of the Saltin-Grimby Physical Activity Level Scale in adolescents. The Fit Futures Study 

      Beldo, Sigurd Klemetsen; Aars, Nils Abel; Christoffersen, Tore; Furberg, Anne-Sofie; Halvorsen, Peder Andreas; Hansen, Bjørge Hermann; Horsch, Alexander; Sagelv, Edvard Hamnvik; Syed, Shaheen; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-01)
      Background<p> <p>The Saltin-Grimby Physical Activity Level Scale (SGPALS) is commonly used to measure physical activity (PA) in population studies, but its validity in adolescents is unknown. This study aimed to assess the criterion validity of the SGPALS against accelerometry in a large sample of adolescents. A secondary aim was to examine the validity across strata of sex, body mass index (BMI), ...
    • Criterion validity of two physical activity and one sedentary time questionnaire against accelerometry in a large cohort of adults and older adults 

      Sagelv, Edvard Hamnvik; Hopstock, Laila Arnesdatter; Johansson, Jonas; Hansen, Bjørge Hermann; Søren, Brage; Horsch, Alexander; Ekelund, Ulf; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-26)
      <i>Objectives</i> - We compared the ability of physical activity and sitting time questionnaires (PAQ) for ranking individuals versus continuous volume calculations (physical activity level (PAL), metabolic equivalents of task (MET), sitting hours) against accelerometry measured physical activity as our criterion.<p> <p><i>Methods</i> - Participants in a cohort from the Tromsø Study completed ...
    • Device-measured physical activity, sedentary time, and risk of all-cause mortality: an individual participant data analysis of four prospective cohort studies 

      Sagelv, Edvard Hamnvik; Hopstock, Laila Arnesdatter; Morseth, Bente; Hansen, Bjørge Hermann; Steene-Johannessen, Jostein; Johansson, Jonas Lars; Nordström, Anna Hava; Saint-Maurice, Pedro F; Løvsletten, Ola; Wilsgaard, Tom; Ekelund, Ulf; Tarp, Jakob (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-24)
      Objectives - To examine whether moderate-to-vigorous physical activity (MVPA) modifies the association between sedentary time and mortality and vice versa, and estimate the joint associations of MVPA and sedentary time on mortality risk.<p> <p>Methods - This study involved individual participant data analysis of four prospective cohort studies (Norway, Sweden, USA, baseline: 2003–2016, 11 989 ...
    • Digital interventions to promote physical activity among inactive adults: A study protocol for a hybrid type I effectiveness-implementation randomized controlled trial 

      Zanaboni, Paolo; Manskow, Unn Sollid; Sagelv, Edvard Hamnvik; Morseth, Bente; Edvardsen, Alf Egil; Aksetøy, Inger-Lise Aamot; Nes, Bjarne; Hastings, Bryce; Gagnon, Marie-Pierre; Antypas, Konstantinos (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-21)
      Introduction: Physical inactivity is the fourth leading risk factor for global mortality, and inactive adults have a higher risk to develop lifestyle diseases. To date, there is preliminary evidence of the efficacy of fitness technologies and other digital interventions for physical activity (PA) promotion. Intervention studies are needed to test the effectiveness and implementation of innovative ...
    • Do declines in occupational physical activity contribute to population gains in body mass index? Tromsø Study 1974–2016 

      Sagelv, Edvard Hamnvik; Ekelund, Ulf; Hopstock, Laila Arnesdatter; Aars, Nils Abel; Fimland, Marius Steiro; Jacobsen, Bjarne K.; Løvsletten, Ola; Wilsgaard, Tom; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-04)
      <i>Objective</i> - To examine whether occupational physical activity changes predict future body mass index (BMI) changes.<p> <p><i>Methods</i> - This longitudinal cohort study included adult participants attending ≥3 consecutive Tromsø Study surveys (examinations 1, 2 and 3) from 1974 to 2016 (N=11 308). If a participant attended >3 surveys, the three most recent surveys were included. Occupational ...
    • Effects of a structured recess intervention on physical activity levels, cardiorespiratory fitness, and anthropometric characteristics in primary school children 

      Casolo, Andrea; Sagelv, Edvard Hamnvik; Bianco, Massimiliano; Casolo, Fransesco; Galvani, Christel (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-22)
      Non-curricular time spent in school context might provide a potential opportunity to promote physical activity (PA) and enhance children’s health. This study examined the effects of a structured recess intervention over 12 weeks on cardiorespiratory fitness (CRF), PA daily levels and anthropometric characteristics, in 2nd and 3rd grade school children. This non-randomized controlled study included ...
    • Effects of Linear Versus Changes of Direction Repeated Sprints on Intermittent High Intensity Running Performance in High-level Junior Football Players over an Entire Season: A Randomized Trial 

      Sagelv, Edvard Hamnvik; Selnæs, Ivar; Pedersen, Sigurd; Pettersen, Svein Arne; Randers, Morten B.; Welde, Boye (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-06)
      <i>Abstract</i>: Background: Changes of direction (COD) repeated sprints (RSs) might have greater relevance to football than linear RSs. We aimed to compare the effects of linear and COD RSs on intermittent high intensity running (HIR) over an entire season. <p> <p><i>Methods</i>: In total, 19 high-level male football players (16–19 years) randomly performed linear RSs or COD RSs twice a week ...
    • Females display lower risk of myocardial infarction from higher estimated cardiorespiratory fitness than males. The Tromsø Study 1994-2014 

      Sagelv, Edvard Hamnvik; Casolo, Andrea; Eggen, Anne Elise; Heitmann, Kim Arne; Johansen, Kristoffer Robin; Løchen, Maja-Lisa; Mathiesen, Ellisiv B.; Morseth, Bente; Njølstad, Inger; Osborne, John Owen; Hagerupsen, Karianne; Pedersen, Sigurd; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-06)
      Objective - To examine the dose-response association between estimated cardiorespiratory fitness (eCRF) and risk of myocardial infarction (MI).<p> <p>Patients and Methods - Adults who attended Tromsø Study surveys 4-6 (Janurary 1,1994-December 20, 2008) with no previous cardiovascular disease were followed up through December 31, 2014 for incident MI. Associations were examined using restricted ...
    • Flywheel squats versus free weight high load squats for improving high velocity movements in football. A randomized controlled trial 

      Sagelv, Edvard Hamnvik; Pedersen, Sigurd; Nilsen, Lars Petter R.; Casolo, Andrea; Welde, Boye; Randers, Morten B.; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-02)
      <i>Background</i> - High load (HL: > 85% of one repetition maximum (1RM)) squats with maximal intended velocity contractions (MIVC) combined with football sessions can be considered a relevant and time-efficient practice for maintaining and improving high velocity movements in football. Flywheel (FW) resistance exercise (RE) have recently emerged with promising results on physical parameters associated ...
    • High intensity long interval sets provides similar enjoyment as continuous moderate intensity exercise. The Tromsø Exercise Enjoyment Study 

      Sagelv, Edvard Hamnvik; Hammer, Tord; Hamsund, Tommy; Rognmo, Kamilla; Pettersen, Svein Arne; Pedersen, Sigurd (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-06)
      <i>Objective</i>: High intensity interval exercise sessions with interval sets over 3 min may provide superior cardiorespiratory fitness benefits. To our knowledge, the exercise enjoyment of interval sets over 3 min is not yet elucidated. The aim of this study was to examine exercise enjoyment following one session with four intervals of 4 min high intensity exercise (HIIE) versus one session ...
    • Improved maximal strength is not associated with improvements in sprint time or jump height in high-level female football players: a clusterrendomized controlled trial 

      Pedersen, Sigurd; Heitmann, Kim Arne; Sagelv, Edvard Hamnvik; Johansen, Dag; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-17)
      <i>Background</i> - Maximal strength increments are reported to result in improvements in sprint speed and jump height in elite male football players. Although similar effects are expected in females, this is yet to be elucidated. The aim of this study was to examine the effect of maximal strength training on sprint speed and jump height in high-level female football players.<p> <p><i>Methods</i> ...
    • Maximal Strength, Sprint, and Jump Performance in High-Level Female Football Players Are Maintained With a Customized Training Program During the COVID-19 Lockdown 

      Pedersen, Sigurd; Johansen, Dag; Pettersen, Svein Arne; Sagelv, Edvard Hamnvik; Welde, Boye; Winther, Andreas Kjæreng; Casolo, Andrea; Randers, Morten B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-26)
      Introduction: The COVID-19 outbreak with partial lockdown has inevitably led to an alteration in training routines for football players worldwide. Thus, coaches had to face with the novel challenge of minimizing the potential decline in fitness during this period of training disruption.<p> <p>Methods: In this observational pre- to posttest study involving Norwegian female football players (18.8 ...
    • Occupational physical activity and risk of mortality in women and men: the Tromsø Study 1986–2021 

      Sagelv, Edvard Hamnvik; Dalene, Knut Eirik; Eggen, Anne Elise; Ekelund, Ulf; Fimland, Marius Steiro; Heitmann, Kim Arne; Holtermann, Andreas; Johansen, Kristoffer Robin; Løchen, Maja-Lisa; Morseth, Bente; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      Objective - Associations between occupational physical activity (OPA) and mortality risks are inconclusive. We aimed to examine associations between (1) OPA separately and (2) jointly with leisure time physical activity (LTPA), and risk of all-cause, cardiovascular disease (CVD) and cancer mortality, over four decades with updated exposure and covariates every 6–8 years.<p> <p>Methods - Adults ...
    • Physical activity levels in adults and elderly from triaxial and uniaxial accelerometry. The Tromsø Study 

      Sagelv, Edvard Hamnvik; Ekelund, Ulf; Pedersen, Sigurd; Brage, Søren; Hansen, Bjørge Hermann; Johansson, Jonas; Grimsgaard, Sameline; Nordström, Anna; Horsch, Alexander; Hopstock, Laila Arnesdatter; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-03)
      <i>Introduction</i> - Surveillance of physical activity at the population level increases the knowledge on levels and trends of physical activity, which may support public health initiatives to promote physical activity. Physical activity assessed by accelerometry is challenged by varying data processing procedures, which influences the outcome. We aimed to describe the levels and prevalence estimates ...
    • Physical activity, weight gain, and risk of mortality in adults 

      Sagelv, Edvard Hamnvik (Doctoral thesis; Doktorgradsavhandling, 2023-05-11)
      <p><i>Why:</i> As low physical activity levels associate with ill health and mortality, continuous monitoring of physical activity levels is needed to inform policy. Identifying aetiology causes for the obesity epidemic is important to prevent population weight gain. However, there are still uncertainties on how physical activity and weight at population level associate over time, and how physical ...