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| 2. |
- Ax, Anna-Karin, 1980-, et al.
(författare)
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Cost-effectiveness of different exercise intensities during oncological treatment in the Phys-Can RCT
- 2023
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Ingår i: Acta Oncologica. - : Taylor & Francis. - 0284-186X .- 1651-226X. ; 62:4, s. 414-421
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundCost-effectiveness is important in the prioritisation between interventions in health care. Exercise is cost-effective compared to usual care during oncological treatment; however, the significance of exercise intensity to the cost-effectiveness is unclear. In the present study, we aimed to evaluate the long-term cost-effectiveness of the randomised controlled trial Phys-Can, a six-month exercise programme of high (HI) or low-to-moderate intensity (LMI) during (neo)adjuvant oncological treatment.MethodsA cost-effectiveness analysis was performed, based on 189 participants with breast, colorectal, or prostate cancer (HI: n = 99 and LMI: n = 90) from the Phys-Can RCT in Sweden. Costs were estimated from a societal perspective, and included cost of the exercise intervention, health care utilisation and productivity loss. Health outcomes were assessed as quality-adjusted life-years (QALYs), using EQ-5D-5L at baseline, post intervention and 12 months after the completion of the intervention.ResultsAt 12-month follow-up after the intervention, the total cost per participant did not differ significantly between HI (€27,314) and LMI exercise (€29,788). There was no significant difference in health outcome between the intensity groups. On average HI generated 1.190 QALYs and LMI 1.185 QALYs. The mean incremental cost-effectiveness ratio indicated that HI was cost effective compared with LMI, but the uncertainty was large.ConclusionsWe conclude that HI and LMI exercise have similar costs and effects during oncological treatment. Hence, based on cost-effectiveness, we suggest that decision makers and clinicians can consider implementing both HI and LMI exercise programmes and recommend either intensity to the patients with cancer during oncological treatment to facilitate improvement of health.
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| 3. |
- Ax, Anna-Karin, 1980-, et al.
(författare)
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Long-term resource utilisation and associated costs of exercise during (neo)adjuvant oncological treatment : the Phys-Can project
- 2022
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Ingår i: Acta Oncologica. - : Taylor & Francis. - 0284-186X .- 1651-226X. ; 61:7, s. 888-896
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Exercise during oncological treatment is beneficial to patient health and can counteract the side effects of treatment. Knowledge of the societal costs associated with an exercise intervention, however, is limited. The aims of the present study were to evaluate the long-term resource utilisation and societal costs of an exercise intervention conducted during (neo)adjuvant oncological treatment in a randomised control trial (RCT) versus usual care (UC), and to compare high-intensity (HI) versus low-to-moderate intensity (LMI) exercise in the RCT.METHODS: We used data from the Physical Training and Cancer (Phys-Can) project. In the RCT, 577 participants were randomised to HI or to LMI of combined endurance and resistance training for 6 months, during oncological treatment. The project also included 89 participants with UC in a longitudinal observational study. We measured at baseline and after 18 months. Resource utilisation and costs of the exercise intervention, health care, and productivity loss were compared using analyses of covariance (RCT vs. UC) and t test (HI vs. LMI).RESULTS: Complete data were available for 619 participants (RCT HI: n = 269, LMI: n = 265, and UC: n = 85). We found no difference in total societal costs between the exercise intervention groups in the RCT and UC. However, participants in the RCT had lower rates of disability pension days (p < .001), corresponding costs (p = .001), and pharmacy costs (p = .018) than the UC group. Nor did we find differences in resource utilisation or costs between HI and LMI exercise int the RCT.CONCLUSION: Our study showed no difference in total societal costs between the comprehensive exercise intervention and UC or between the exercise intensities. This suggests that exercise, with its well-documented health benefits during oncological treatment, produces neither additional costs nor savings.
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| 4. |
- Berntsen, Sveinung, et al.
(författare)
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Design of a randomized controlled trial of physical training and cancer (Phys-Can) - the impact of exercise intensity on cancer related fatigue, quality of life and disease outcome
- 2017
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Ingår i: BMC Cancer. - : Springer Science and Business Media LLC. - 1471-2407. ; 17:1, s. 1-12
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Tidskriftsartikel (refereegranskat)abstract
- Background: Cancer-related fatigue is a common problem in persons with cancer, influencing health-related quality of life and causing a considerable challenge to society. Current evidence supports the beneficial effects of physical exercise in reducing fatigue, but the results across studies are not consistent, especially in terms of exercise intensity. It is also unclear whether use of behaviour change techniques can further increase exercise adherence and maintain physical activity behaviour. This study will investigate whether exercise intensity affects fatigue and health related quality of life in persons undergoing adjuvant cancer treatment. In addition, to examine effects of exercise intensity on mood disturbance, adherence to oncological treatment, adverse effects from treatment, activities of daily living after treatment completion and return to work, and behaviour change techniques effect on exercise adherence. We will also investigate whether exercise intensity influences inflammatory markers and cytokines, and whether gene expressions following training serve as mediators for the effects of exercise on fatigue and health related quality of life. Methods/design: Six hundred newly diagnosed persons with breast, colorectal or prostate cancer undergoing adjuvant therapy will be randomized in a 2 × 2 factorial design to following conditions; A) individually tailored low-to-moderate intensity exercise with or without behaviour change techniques or B) individually tailored high intensity exercise with or without behaviour change techniques. The training consists of both resistance and endurance exercise sessions under the guidance of trained coaches. The primary outcomes, fatigue and health related quality of life, are measured by self-reports. Secondary outcomes include fitness, mood disturbance, adherence to the cancer treatment, adverse effects, return to activities of daily living after completed treatment, return to work as well as inflammatory markers, cytokines and gene expression. Discussion: The study will contribute to our understanding of the value of exercise and exercise intensity in reducing fatigue and improving health related quality of life and, potentially, clinical outcomes. The value of behaviour change techniques in terms of adherence to and maintenance of physical exercise behaviour in persons with cancer will be evaluated. Trial registration:NCT02473003 , October, 2014.
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| 5. |
- Bjørke, Ann Christin Helgesen, et al.
(författare)
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Exploring Moderators of the Effect of High vs. Low-to-Moderate Intensity Exercise on Cardiorespiratory Fitness During Breast Cancer Treatment - Analyses of a Subsample From the Phys-Can RCT
- 2022
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Ingår i: Frontiers in Sports and Active Living. - : Frontiers Media S.A.. - 2624-9367. ; 4
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: The results from the physical training and cancer randomized controlled trial (Phys-Can RCT) indicate that high intensity (HI) strength and endurance training during (neo-)adjuvant cancer treatment is more beneficial for cardiorespiratory fitness (CRF, measured as peak oxygen uptake [VO2peak]) than low-to-moderate intensity (LMI) exercise. Adherence to the exercise intervention and demographic or clinical characteristics of patients with breast cancer undergoing adjuvant treatment may moderate the exercise intervention effect on VO2peak. In this study, the objective was to investigate whether baseline values of VO2peak, body mass index (BMI), time spent in moderate- to vigorous-intensity physical activity (MVPA), physical fatigue, age, chemotherapy treatment, and the adherence to the endurance training moderated the effect of HI vs. LMI exercise on VO2peak.Materials and Methods: We used data collected from a subsample from the Phys-Can RCT; women who were diagnosed with breast cancer and had a valid baseline and post-intervention VO2peak test were included (n = 255). The exercise interventions from the RCT included strength and endurance training at either LMI, which was continuous endurance training at 40–50% of heart rate reserve (HRR), or at HI, which was interval training at 80–90% of HRR, with similar exercise volume in the two groups. Linear regression analyses were used to investigate moderating effects using a significance level of p < 0.10. Statistically significant interactions were examined further using the Johnson–Neyman (J-N) technique and regions of significance (for continuous variables) or box plots with adjusted means of post-intervention VO2peak (for binary variables).Results: Age, as a continuous variable, and adherence, dichotomized into < or > 58% based on median, moderated the effect of HI vs. LMI on CRF (B = −0.08, 95% CI [−0.16, 0.01], pinteraction = 0.06, and B = 1.63, 95% CI [−0.12, 3.38], pinteraction = 0.07, respectively). The J-N technique and regions of significance indicated that the intervention effect (HI vs. LMI) was positive and statistically significant in participants aged 61 years or older. Baseline measurement of CRF, MVPA, BMI, physical fatigue, and chemotherapy treatment did not significantly moderate the intervention effect on CRF.Conclusion: Women with breast cancer who are older and who have higher adherence to the exercise regimen may have larger effects of HI exercise during (neo-)adjuvant cancer treatment on CRF.
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| 6. |
- Brooke, Hannah L., et al.
(författare)
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Patterns and determinants of adherence to resistance and endurance training during cancer treatment in the Phys-Can RCT
- 2022
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Ingår i: BMC Sports Science, Medicine and Rehabilitation. - : BioMed Central (BMC). - 2052-1847. ; 14:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Knowledge regarding adherence is necessary to improve the specificity of exercise interventions during cancer treatment. We aimed to determine adherence to resistance and endurance training interventions in parallel; identify subgroups with similar adherence characteristics; and examine determinants of these subgroups. Methods: In the Phys-Can randomised controlled trial, participants (n=577, 81% women, mean(SD) age 59(12) years, and 50% with BMI >= 25 kg/m(2)) starting (neo-) adjuvant treatment for breast, colorectal or prostate cancer were randomized to 6-month of high (HI) or low-to-moderate intensity (LMI) supervised, group-based resistance training and individual home-based endurance training, with or without behavior change support. Adherence was calculated as performed exercise volume as a proportion of prescribed exercise volume (0-100%), overall (HI and LMI groups) and for frequency, intensity, type and time (FITT principles) (HI group). Adherence to resistance training was plotted against adherence to endurance training overall and for each FITT principle. K-means cluster analysis was used to identify subgroups with similar adherence characteristics. Potential determinants of subgroup membership were examined using multinomial logistic regression. Results: We found a positive curvilinear correlation between adherence to resistance and endurance training overall. A similar correlation was seen for adherence to frequency of resistance vs. endurance training in the HI group. In the HI group, adherence to resistance training intensity and time was > 80% for almost all participants. For endurance training adherence ranged from 0 to 100% for each of the FITT principles. Three clusters were identified, representing low, mixed, and high adherence to resistance and endurance training overall. Participants with higher age (Relative risk ratio [95% Cl]; LMI: 0.86[0.77-0.96], HI: 0.83[0.74-0.93]), no behaviour change support (LMI: 0.11 [0.02-0.56], HI: 0.20[0.05-0.85]), higher cardiorespiratory fitness (LMI: 0.81 [0.69-0.94], HI: 0.80[0.69-0.92]), more fatigue (according to the reduced activity subscale of the MFI questionnaire) (LMI: 0.48[0.31-0.73], HI: 0.69[0.52-0.93]) or higher quality of life (LMI: 0.95[0.90-1.00], HI: 0.93[0.88-0.98]) were less likely to be in the low than the high adherence cluster whether randomised to LMI or HI training. Other determinants were specific to those randomised to LMI or HI training. Conclusions: In an exercise intervention during cancer treatment, adherence to resistance and endurance training were positively correlated. Personalisation of interventions and additional support for some subgroups of participants may improve adherence.
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| 7. |
- Brynjulfsen, Trine, et al.
(författare)
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Motivation for physical activity in adolescents with asthma
- 2021
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Ingår i: Journal of Asthma. - : Taylor & Francis. - 0277-0903 .- 1532-4303. ; 58:9, s. 1247-1255
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Tidskriftsartikel (refereegranskat)abstract
- Objective:We explored motivation for physical activity (PA) and exercise in adolescents with asthma who entered and continued a 10-week play-based exercise intervention. Methods:Eighteen adolescents with asthma, aged 13-17 years, participated in a 10-week play- and interval-based indoor exercise intervention during winter and autumn months. Semi-structured focus group interviews were conducted in weeks 2 and 8, focusing on motivation for PA and exercise, as well as field observations of exercise sessions in weeks 2, 6, and 8. The first interview was analyzed separately from the second one and descriptive observational data were obtained using thematic analysis and self-determination theory as a framework. Results:In the first round of focus group interviews, participants (n= 18) described amotivation and motivation for PA within the following five themes: "teachers' lack of asthma knowledge", "embarrassment over asthma symptoms", "not being able to keep pace with peers", "seasonal challenges", and "mastering fun physical activities". Based on the second interview (n= 14) and descriptive observational data (n= 18), participants reported and revealed amotivation and motivation for PA within the following four themes: "understanding and relatedness", "social support", "competition", and "mastering fun activities". Conclusion:We conclude that play-based exercises designed for groups of adolescents with asthma can support motivation for PA and exercise and reduce social and asthma-specific barriers.
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| 8. |
- Demmelmaier, Ingrid, 1960-
(författare)
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Behaviours, Beliefs and Back Pain : Prognostic Factors for Disability in the General Population and Implementation of Screening in Primary Care Physiotherapy
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Aim: The overall aim of this thesis was to study prognostic factors for prolonged disability in back pain in the general population and physiotherapists’ screening for prolonged disability, applying a social cognitive learning perspective. Methods and results: Studies I and II were based on a survey in the general population in Sweden. Study I included 1024 individuals aged 20-50 years, reporting non-specific back pain. Four groups (n = 100, 215, 172 and 537) based on duration and recurrence of back pain were formed and compared. After controlling for pain intensity, catastrophising and expectations of future pain were positively correlated to pain duration. Perceived social support was negatively correlated to pain duration. Study II was longitudinal over 12 months and analysed one group reporting first-episode back pain (n = 77), and one group reporting long-term back pain (n = 302). Future pain intensity and disability were predicted by initial levels of pain and disability and pain-related cognitions in both groups. Study III examined the inter-rater reliability of a research protocol for assessment of physiotherapists’ telephone screening for prolonged disability. The results demonstrated sufficient inter-rater reliability. Study IV evaluated the effect of a tailored skills training intervention on physiotherapists’ screening for prolonged disability in back pain. Four physiotherapists in primary care participated in four quasi-experimental single-subject studies. Effects were seen in all participants, with increased screening of prognostic factors and less time spent on detailed discussions about back pain. Conclusions: The identification of mainly cognitive explanatory variables indicates the relevance of a social cognitive perspective of back pain-related disability (studies I and II). Physiotherapists’ telephone screening for prolonged disability in back can be reliably assessed (study III). It is suggested that interventions based on social cognitive theory are effective in producing change in specified clinical behaviours in physiotherapists (study IV).
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| 9. |
- Demmelmaier, Ingrid, 1960-, et al.
(författare)
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Does exercise intensity matter for fatigue during (neo-)adjuvant cancer treatment? The Phys-Can randomized clinical trial
- 2021
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : Wiley. - 0905-7188 .- 1600-0838. ; 31:5, s. 1144-1159
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Tidskriftsartikel (refereegranskat)abstract
- Exercise during cancer treatment improves cancer-related fatigue (CRF), but the importance of exercise intensity for CRF is unclear. We compared the effects of high- vs low-to-moderate-intensity exercise with or without additional behavior change support (BCS) on CRF in patients undergoing (neo-)adjuvant cancer treatment. This was a multicenter, 2x2 factorial design randomized controlled trial (Clinical Trials NCT02473003) in Sweden. Participants recently diagnosed with breast (n = 457), prostate (n = 97) or colorectal (n = 23) cancer undergoing (neo-)adjuvant treatment were randomized to high intensity (n = 144), low-to-moderate intensity (n = 144), high intensity with BCS (n = 144) or low-to-moderate intensity with BCS (n = 145). The 6-month exercise intervention included supervised resistance training and home-based endurance training. CRF was assessed by Multidimensional Fatigue Inventory (MFI, five subscales score range 4-20), and Functional Assessment of Chronic Illness Therapy-Fatigue scale (FACIT-F, score range 0-52). Multiple linear regression for main factorial effects was performed according to intention-to-treat, with post-intervention CRF as primary endpoint. Overall, 577 participants (mean age 58.7 years) were randomized. Participants randomized to high- vs low-to-moderate-intensity exercise had lower physical fatigue (MFI Physical Fatigue subscale; mean difference −1.05 [95% CI: −1.85, −0.25]), but the difference was not clinically important (ie <2). We found no differences in other CRF dimensions and no effect of additional BCS. There were few minor adverse events. For CRF, patients undergoing (neo-)adjuvant treatment for breast, prostate or colorectal cancer can safely exercise at high- or low-to-moderate intensity, according to their own preferences. Additional BCS does not provide extra benefit for CRF in supervised, well-controlled exercise interventions.
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| 10. |
- Demmelmaier, Ingrid, 1960-, et al.
(författare)
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How Are Behavioral Theories Used in Interventions to Promote Physical Activity in Rheumatoid Arthritis? : A Systematic Review
- 2018
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Ingår i: Arthritis care & research. - : John Wiley & Sons. - 2151-464X .- 2151-4658. ; 70:2, s. 185-196
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Forskningsöversikt (refereegranskat)abstract
- ObjectiveTo identify the use of behavioral theories in physical activity interventions in populations with rheumatoid arthritis (RA). MethodsThis review includes articles published in English between January 1, 1980 and November 8, 2015 in MEDLINE, Cochrane, and CINAHL, identified by a strategic literature search. Included studies were published in international peer-reviewed journals, mentioned theory, evaluated a physical activity intervention for adults with RA, and had 1 physical activity variable as the outcome. References and reviews were also checked. Two investigators independently selected articles and extracted data using a validated scale, the theory coding scheme. Additional extracted data included author, sample characteristics, study design, physical activity outcomes, intervention type and duration, and control group. ResultsA total of 245 articles were identified, 211 articles and references were screened, and 29 articles were reviewed. Of these, 18 were excluded, leaving 11 articles with 1,472 participants (75% women). Ten studies (91%) were randomized controlled trials, 8 (73%) assessed physical activity plus self-management, and 3 (27%) physical activity only. Program durations ranged from 5 weeks to 1 year. Eight studies (73%) used a single theory, 7 studies (64%) linked at least 1 intervention technique to theory, 2 studies (18%) analyzed mediating effects of theoretical constructs, and 5 studies (45%) discussed results in relation to theory. ConclusionFindings indicate that physical activity intervention studies claiming the use of behavioral theories use theory to a small extent. We suggest expanding theory use in design, evaluation, and interpretation of physical activity intervention results. Further, we recommend that future studies evaluate the most salient behavioral theories, interventions components, and delivery modes in RA populations.
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