Christina Gjestvang

ORCID: 0000-0003-2253-1921
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About
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Research Areas
  • Physical Activity and Health
  • Eating Disorders and Behaviors
  • Cardiovascular and exercise physiology
  • Obesity, Physical Activity, Diet
  • Sports Performance and Training
  • Behavioral Health and Interventions
  • Obesity and Health Practices
  • Muscle metabolism and nutrition
  • Impact of Technology on Adolescents
  • COVID-19 and Mental Health
  • Gestational Diabetes Research and Management
  • Exercise and Physiological Responses
  • Obsessive-Compulsive Spectrum Disorders
  • Stoma care and complications
  • Genetics and Physical Performance
  • Motivation and Self-Concept in Sports
  • Breastfeeding Practices and Influences
  • Children's Physical and Motor Development
  • Cardiovascular Health and Disease Prevention
  • Adventure Sports and Sensation Seeking
  • Pregnancy-related medical research
  • Sports injuries and prevention
  • Health Literacy and Information Accessibility
  • Health and Lifestyle Studies
  • Cardiovascular and Diving-Related Complications

Norwegian School of Sport Sciences
2017-2025

No prospective studies have investigated motives and barriers to exercise in new untrained fitness club members. The aims of the present longitudinal study were (a) examine proportions reporting regular exercise, non‐regular dropout; (b) identify exercise; (c) compare between exercisers first year membership. New members (n = 250) followed for 1 year. A questionnaire including demographics, frequency, (EMI‐2), (18 common reported barriers) was used, 184 answered at four time points (onset,...

10.1111/sms.13736 article EN cc-by Scandinavian Journal of Medicine and Science in Sports 2020-06-03

Background Regular exercise may counteract obesity-related health risks, but adherence is low among individuals with obesity. Personal trainers positively influence behavior by providing motivational support. Individuals who receive regular coaching are more likely to adhere their routine, compared those individually. However, investing in personalized guidance, such as a personal trainer, can be expensive for the individual. Thus, integrating web-based could economically sustainable option,...

10.2196/68462 article EN cc-by Journal of Medical Internet Research 2025-02-25

Objectives The primary aim of the present study was to investigate if changes in physical fitness, body composition and weight are associated with exercise attendance dropout among fitness club members. Secondary, we wanted identify motives for membership exercise. Setting New members at 25 clubs Oslo, Norway. Participants In total, 125 new were recruited. Eligible criteria <4 weeks membership, untrained (exercising <60 min once a week) ≥18 years. At inclusion, after 3 (n=87) 12 months...

10.1136/bmjopen-2018-027987 article EN cc-by-nc BMJ Open 2019-04-01

This study investigated self-perception of overall health (SPH) and quality life (QoL) at onset after 3, 6 12 months fitness club membership. Also, we compared SPH QoL between those who reported regular use the (≥2 exercise sessions/week last month) with did not (one session/week or no month).Longitudinal prospective study.25 clubs in Oslo, Norway.In total, 250 newly registered members (equal numbers men women, mean age=36.4±11.3 years, body mass index=25.7±4.4) were recruited. At (n=250), 3...

10.1136/bmjopen-2019-036250 article EN cc-by-nc BMJ Open 2020-06-01

A fitness club may be an important arena to promote regular exercise. However, authors have reported low attendance rates (10 37%) the first months after individuals sign up for membership. It is therefore understand reasons poor exercise adherence. In this project, we aimed investigate different psychosocial factors that might increase likelihood of reporting year a membership, including self-efficacy, motives, social support, life satisfaction, and customer satisfaction.New members (≤4...

10.3389/fpsyg.2021.638928 article EN cc-by Frontiers in Psychology 2021-05-28

Abstract Background Exercise during pregnancy is associated with various health benefits for both mother and child. Despite these benefits, most pregnant women do not meet physical activity recommendations. A known barrier to engaging in exercise a lack of knowledge about appropriate safe exercise. In our current era social media, many are turning online information sources guidance, including media influencers. Little attitudes towards provided by influencers on platforms. This study aimed...

10.1186/s12889-023-15457-6 article EN cc-by BMC Public Health 2023-03-27

Abstract Background Some physically active people exercise compulsively, which can be associated with several mental health challenges. Fitness instructors are considered important role models for an active, healthy lifestyle; yet little is known about their motives and health. The aim of this study was to examine the presence compulsive challenges, interaction, in fitness instructors. Methods A total 270 from Norwegian clubs were recruited cross-sectional study. Inclusion criteria operating...

10.1186/s40337-021-00446-0 article EN cc-by Journal of Eating Disorders 2021-09-02

Objective To evaluate how rating of perceived capacity (RPC) is related to maximal oxygen uptake (VO 2max ) and examine VO at onset training in healthy adults. Methods In total, 125 newly registered fitness centre members, equally men women, answered the RPC scale performed a treadmill test for measurement . Eligible criteria were <4 weeks membership, physically inactive, ≥18 years not pregnant. The one-page (1–20) based on metabolic equivalent tasks, where individual chooses most...

10.1136/bmjsem-2017-000232 article EN cc-by-nc BMJ Open Sport & Exercise Medicine 2017-07-01

Abstract Introduction The aims of the present study were to report longitudinal data on prevalence urinary incontinence (UI) in a fitness club setting and investigate whether gym members are educated about exercise their pelvic floor muscles. Methods New (125 women) from 25 clubs Oslo, Norway, filled 25-min online questionnaire (SurveyXact) at four time points (onset, 3, 6 12 months membership). covered background/health information, membership dropout habits, including muscle training...

10.1007/s00192-020-04253-0 article EN cc-by International Urogynecology Journal 2020-03-04

Moderate to heavy load resistance training (RT) is advocated for overweight and obese individuals. One of the beneficial effects RT increased resting metabolic rate (RMR), which typically makes up majority total daily energy expenditure. It is, however, unclear if low moderate affects RMR. Hence, present study aimed examine twelve weeks BodyPump, on RMR in previous untrained women with BMI≥25.0, compare results individual RT.Eighteen participated (mean age 35.4±10.2 years, BMI 30.4...

10.23736/s0022-4707.17.07613-7 article EN The Journal of Sports Medicine and Physical Fitness 2018-07-01

Data from the research project "Fitness clubs-a venue for public health?" provided an opportunity to evaluate accuracy of self-reported body weight and height, subsequent Body Mass Index (BMI), as well "trueness" novice exercisers perception status category, which has not been examined in this population. The aims were examine weight, calculated BMI data online survey compared with measured at fitness club start-up, investigate how accurately place themselves within self-classified group...

10.3390/ijerph18168502 article EN International Journal of Environmental Research and Public Health 2021-08-11

The aims of the present study were (a) to assess PA level and prevalence meeting recommendations at onset after 12 months fitness club membership, (b) identify socioeconomic status (SES), compare this in participants with high (≥two weekly sessions) exercise frequency low (≤one session/week) frequency. was measured by ActiGraph GT1M 125 new members months. A total 250 answered a questionnaire covering SES To examine changes recommendations, paired t tests or McNemar's test used. No found...

10.1002/tsm2.120 article EN Translational Sports Medicine 2019-11-14

Since cardiorespiratory fitness is an important predictor for all-cause mortality, it of interest to know if meeting the physical activity (PA) recommendations associated with higher levels maximal oxygen uptake (VO2max). We aimed investigate association between total PA level given as counts per minute (cpm) and minutes in moderate-to-vigorous (MVPA), VO2max new club members.A 62 men 63 women (≥ 18 years), defined healthy (no disease considered hinder PA) participated this study. (mL kg-1...

10.1186/s13102-022-00503-4 article EN cc-by BMC Sports Science Medicine and Rehabilitation 2022-06-17

No prospective studies have investigated if repeated testing of physical performance and body composition are associated with exercise attendance or patterns in fitness club members. This study aimed to investigate was gym members report data on use the club`s facilities products. Untrained new were recruited divided into a test group (n = 125) as controls 125). All participants answered survey including involvement, at onset, after 3, 6, 12 months follow-up. The also measured composition,...

10.52082/jssm.2021.35 article EN cc-by-nc-nd Journal of Sports Science and Medicine 2021-02-26

Fitness clubs are one of the largest exercise arenas worldwide. Still, membership withdrawal and dropout rates 40-65% in first six months. One important approach to retaining members may be create an environment that feels inclusive, clusters with mutual needs interests. Increased knowledge this field can provide valuable information leads more effective promotion strategies better retention rates, long-term success gym public health. Thus, we aimed compare background factors, motivation,...

10.52082/jssm.2023.235 article EN cc-by-nc-nd Journal of Sports Science and Medicine 2023-04-10

Due to the Coronavirus pandemic, politicians enacted directions reduce social interactions, including lockdown of fitness clubs. We aimed investigate how this changed exercise habits Norwegian gym members.Based on survey data, men and women (≥18 years, n = 233, data collection from Aug. 2020 Jan. 2021) were recruited study by an email-invitation their club chain or Facebook advertisement. The participants reported background variables (e.g., age, gender, total household income, occupation,...

10.3389/fspor.2022.985782 article EN cc-by Frontiers in Sports and Active Living 2022-11-23

High-repetition, low-load resistance exercise in group class settings has gained popularity recent years, with BodyPump as a prime example. For individuals using for body-weight management, the energy expenditure during is of interest. Therefore, we herein aimed to estimate session and time-matched heavy load training overweight women (BMI ≥ 25.0).Eighteen participated study (mean age 35.4 years ± 10.2, BMI 30.4 kg/m2 4.8), 10 exercising (50-100 repetitions each muscle group) eight performed...

10.3389/fphys.2020.00570 article EN cc-by Frontiers in Physiology 2020-06-10

Fitness clubs may be environments where abnormal eating behaviors and excessive exercise are socially accepted, potentially putting individuals at risk for disordered (DE). This study examined the DE prevalence among gym members, comparing body appreciation, motivation, frequency, BMI, age across levels, assessed associated factors. A sample of 232 members (age: 39.6 ± 13.7) completed an online survey measuring (Eating Disorder Screen Primary Care (ESP)), appreciation (Body Appreciation...

10.3390/sports12120343 article EN cc-by Sports 2024-12-12

<sec> <title>BACKGROUND</title> Regular exercise may counteract obesity-related health risks, but adherence is low among individuals with obesity. Personal trainers positively influence behavior by providing motivational support. Individuals who receive regular coaching are more likely to adhere their routine, compared those individually. However, investing in personalized guidance, such as a personal trainer, can be expensive for the individual. Thus, integrating web-based could...

10.2196/preprints.68462 preprint EN 2024-11-06

Fitness clubs are one of the largest exercise arenas worldwide. Still, membership withdrawal and dropout rates 40-65% in first six months. One important approach to retaining members may be create an environment that feels inclusive, clusters with mutual needs interests. Increased knowledge this field can provide valuable information leads more effective promotion strategies better retention rates, long-term success gym public health. Thus, we aimed compare background factors, motivation,...

10.52082/jssm.2023.234 article EN cc-by-nc-nd Journal of Sports Science and Medicine 2023-04-10

Background Along with the rising prevalence of high body-mass index (BMI), there is also increased emphasis on leanness and fitness. Both these trends suggest that many individuals are concerned about weight management may try to lose weight. Using data from research project “Fitness clubs - a venue for public health?”, we aimed describe cycling energy-restricted dieting in men women at start-up fitness club membership, investigate influencing factors [age, BMI, educational level,...

10.3389/fendo.2022.851887 article EN cc-by Frontiers in Endocrinology 2022-05-03
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