Effect of the exercise programme on the quality of life of prostate cancer survivors: A randomized controlled trial

Physical activity and pain in people with and without cancer

BACKGROUND

Performing physical activity may provide analgesic benefit, although this effect is more established for noncancer pain rather than cancer pain. The relationship between physical activity and pain outcomes in adults with and without a history of cancer was examined.

METHODS

Totals of 51,439 adults without a cancer history and 10,651 adults with a cancer history from the Cancer Prevention Study II Nutrition Cohort were included. Exposures included self-reported moderate to vigorous physical activity (MVPA) as well as 2-year change in MVPA. Pain outcomes included pain intensity (primary outcome) and analgesic use (secondary outcome).

RESULTS

MVPA was inversely associated with pain intensity for adults with (odds ratio [OR], 0.84 [≥15 metabolic equivalent of task (MET) h/week vs. <7.5 MET h/week]; 95% confidence interval [CI], 0.76-0.93) and without (OR, 0.79; 95% CI, 0.75-0.82) a history of cancer. Compared to remaining inactive, participants who became sufficiently active (cancer: OR, 0.76; 95% CI, 0.68-0.86; no cancer: OR, 0.73; 95% CI, 0.69-0.77), became inactive (cancer: OR, 0.79; 95% CI, 0.71-0.88; no cancer: OR, 0.84; 95% CI, 0.80-0.89), or remained sufficiently active (cancer: OR, 0.66; 95% CI, 0.60-0.72; no cancer: OR, 0.62; 95% CI, 0.60-0.65) also reported less pain. Physical activity was not related to analgesic use.

CONCLUSIONS

The relationship between physical activity and pain intensity was not substantially different between people with and without a history of cancer. Cancer survivors who perform more activity, or who increase their activity, may experience less pain than cancer survivors who consistently perform less.

PLAIN LANGUAGE SUMMARY

People who have had cancer often experience ongoing pain. Being physically active may help reduce the intensity of the pain they experience.

Qualitative exploration of sexual dysfunction and associated coping strategies among Iranian prostate cancer survivors

OBJECTIVE

Our understanding of the experiences of prostate cancer survivors regarding their sexual life and related issues remains limited. Therefore, this study aimed to explore sexual dysfunction and associated coping strategies among Iranian prostate cancer survivors.

METHODS

A qualitative study was undertaken. Participants were 15 Iranian prostate cancer survivors chosen using purposeful sampling. Data collection involved conducting in-depth semi-structured interviews, followed by the utilization of the conventional qualitative content analysis method for data analysis.

RESULTS

Three themes were developed: (a) suspension of sexual life-treatment for prostate cancer significantly impacted participants' sexual lives; (b) emotional resilience and psychological coping strategies-various psychological strategies were used to tackle sexual dysfunction; (c) efforts to regain sexual function-several strategies were applied to enhance sexual performance.

CONCLUSION

Our study findings provide insights into the experiences of prostate cancer survivors and subsequent shifts in their sexual dynamics and coping with the disease. Healthcare providers should actively identify patients' concerns and develop culturally tailored care strategies to address sexual challenges and improve coping among prostate cancer survivors.

Physical activity and pain in people with cancer: a systematic review and meta-analysis

PURPOSE

Physical activity can provide analgesic benefit but its effect on cancer-related pain is unclear. This review synthesised and appraised the evidence for the effect of physical activity on pain in people living with or beyond cancer.

METHODS

A systematic search of Ovid Medline and Embase was performed to identify randomised controlled trials (RCTs), randomised cross-over studies (RXTs), and prospective observational studies that examined physical activity and pain outcomes in adults living with or beyond cancer. Meta-analyses were performed to generate effect estimates. Risk of bias was assessed, and the GRADE system was used to assess evidence quality.

RESULTS

One hundred twenty-one studies (n = 13,806), including 102 RCTs, 6 RXTs, and 13 observational studies, met the criteria for inclusion. Meta-analyses of RCTs identified a decrease in pain intensity (n = 3734; standardised mean difference (SMD) - 0.30; 95% confidence interval (CI) - 0.45, - 0.15) and bodily pain (n = 1170; SMD 0.28; 95% CI 0.01, 0.56) but not pain interference (n = 207; SMD - 0.13, 95% CI - 0.42, 0.15) following physical activity interventions. Individual studies also identified a reduction in pain sensitivity but not analgesic use, although meta-analysis was not possible for these outcomes. High heterogeneity between studies, low certainty in some effect estimates, and possible publication bias meant that evidence quality was graded as very low to low.

CONCLUSION

Physical activity may decrease pain in people living with and beyond cancer; however, high heterogeneity limits the ability to generalise this finding to all people with cancer or to specific types of cancer-related pain.

A meta-analysis of healthy lifestyle interventions addressing quality of life of cancer survivors in the post treatment phase

PURPOSE

This study's primary aim was to investigate whether including a mental health component to healthy lifestyle interventions are associated with greater effects on quality of life (QoL) for post-treatment cancer survivors than addressing physical activity and/or nutrition alone.

METHODS

PsycINFO, Scopus, Medline, CINAHL, and Google Scholar were searched to identify randomised control trials of healthy lifestyle interventions for post-treatment cancer survivors, with a usual care or waitlist control, and measured QoL. Meta-analyses quantified the effects of interventions vs controls at post-treatment on total QoL, physical, emotional, and social well-being. Subgroup analyses compared interventions with vs without a mental health component, modes of delivery, and duration. The quality of the included studies was assessed using the Cochrane Risk of Bias 2.

RESULTS

Eighty-eight papers evaluating 110 interventions were included: 66 effect sizes were extracted for meta-analysis, and 22 papers were narratively synthesised. The pooled effect size demonstrated a small, significant effect of healthy lifestyle interventions in comparison to control for all QoL outcomes (total g = 0.32, p >.001; physical g = 0.19, p = 0.05; emotional g = 0.20, p >.001; social g = 0.18, p = 0.01). There was no significant difference between interventions with vs without a mental health component. Face-to-face delivered interventions were associated with greater total QoL and physical well-being compared to other modalities. Interventions delivered ≤12 weeks were associated with greater physical well-being than those delivered ≥13 weeks. Overall, studies had substantial levels of heterogeneity and 55.9% demonstrated high risk of bias.

CONCLUSIONS

Participating in a healthy lifestyle intervention following cancer treatment improves QoL. Few trials addressed mental health or evaluated online or telephone modalities; future research should develop and evaluate interventions that utilise these features.

IMPLICATIONS FOR CANCER SURVIVORS

Brief healthy lifestyle interventions can be recommended for cancer survivors, particularly those interested in improving physical well-being.

Characteristics and Components of Self-Management Interventions for Improving Quality of Life in Cancer Survivors: A Systematic Review

Self-management can improve clinical and psychosocial outcomes in cancer survivors. Which intervention characteristics and components are beneficial is unclear, hindering implementation into practice. We systematically searched six databases from inception to 17 November 2021 for studies evaluating self-management interventions for adult cancer survivors post-treatment. Independent reviewers screened for eligibility. Data extraction included population and study characteristics, intervention characteristics (TIDieR) and components (PRISMS), (associations with) quality of life (QoL), self-efficacy, and economic outcomes. Study quality was appraised, and narrative synthesis was conducted. We identified 53 papers reporting 32 interventions. Studies had varying quality. They were most often randomised controlled trials (n = 20), targeted at survivors of breast (n = 10), prostate (n = 7), or mixed cancers (n = 11). Intervention characteristics (e.g., provider, location) varied considerably. On average, five (range 1-10) self-management components were delivered, mostly "Information about condition and its management" (n = 26). Twenty-two studies reported significant QoL improvements (6 also reported significant self-efficacy improvements); these were associated most consistently with combined individual and group delivery. Economic evaluations were limited and inconclusive. Self-management interventions showed promise for improving QoL, but study quality was variable, with substantial heterogeneity in intervention characteristics and components. By identifying what to adapt from existing interventions, these findings can inform development and implementation of self-management interventions in cancer.

Updated systematic review of the effects of exercise on understudied health outcomes in cancer survivors

INTRODUCTION

The American College of Sports Medicine provided guidelines for exercise prescriptions in cancer survivors for specific cancer- and treatment-related health outcomes. However, there was insufficient evidence to generate exercise prescriptions for 10 health outcomes of cancer treatment. We sought to update the state of evidence.

METHODS

We conducted a systematic review of these 10 understudied health outcomes (bone health, sleep, cardiovascular function, chemotherapy-induced peripheral neuropathy (CIPN), cognitive function, falls and balance, nausea, pain, sexual function, and treatment tolerance) and provided an update of evidence.

RESULTS

While the evidence base for each outcome has increased, there remains insufficient evidence to generate exercise prescriptions. Common limitations observed across outcomes included: variability in type and quality of outcome measurement tools, variability in definitions of the health outcomes, a lack of phase III trials, and a majority of trials investigating breast or prostate cancer survivors only.

CONCLUSION

We identified progress in the field of exercise oncology for several understudied cancer- and treatment-related health outcomes. However, we were not able to generate exercise prescriptions due to continued insufficient evidence base. More work is needed to prescribe exercise as medicine for these understudied health outcomes, and our review highlights several strategies to aid in research acceleration within these areas of exercise oncology.

Association between physical activity and health-related quality of life: time to deterioration model analysis in lung adenocarcinoma

BACKGROUND AND PURPOSE : Health-related quality of life (HRQoL) is a key aspect of care for cancer survivors that can be improved by physical activity. Our aim was to explore the relationship between physical activity and time to deterioration (TTD) of the HRQoL in patients with lung adenocarcinoma (LUAD).

METHODS

We conducted a hospital-based prospective study. The International Physical Activity Questionnaire long-form (IPAQ-L) was used to investigate the pre-treatment physical activity levels, and the EORTC Quality of Life Questionnaire version 3.0 (EORTC QLQ-C30) and EORTC Quality of Life Questionnaire-Lung Cancer (EORTC QLQ-LC13) were used to assess HRQoL at baseline and during follow-up. The QoLR package was used to calculate the HRQoL scores and determine TTD events (minimal clinically important difference=5 points). The effect of physical activity on the HRQoL was assessed using Cox regression analysis.

RESULTS

For EORTC QLQ-C30, TTD events of physical functioning (PF) and dyspnea (DY) in functional scales and symptom scales were the most common during follow-up. Pre-treatment physical activity was found to significantly delay TTD of insomnia (HR=0.635, 95%CI: 0.437-0.922, P=0.017) and diarrhea (HR=0.475, 95%CI: 0.291-0.774, P=0.003). For EORTC QLQ-LC13 scales, deterioration of dyspnea (LC-DY) was the most common event. Physical activity was found to delay the TTD of dyspnea (HR=0.654, 95%CI: 0.474-0.903, P=0.010), sore mouth (HR=0.457, 95%CI: 0.244-0.856, P=0.015), and dysphagia (HR=0.315, 95%CI: 0.172-0.580, P<0.001).

CONCLUSIONS

Pre-treatment physical activity of LUAD patients may delay the TTD of multiple HRQoL indicators in EORTC QLQ-C30 and EORTC QLQ-LC13.

IMPLICATION FOR CANCER SURVIVORS

Health-related quality of life (HRQoL) is a key aspect of care for cancer survivors (someone who is living with or beyond cancer), that can be improved by physical activity. Our aim was to explore the relationship between physical activity and time to deterioration (TTD) of the HRQoL in patients with lung adenocarcinoma (LUAD).

Comparative effects of different types of exercise on health-related quality of life during and after active cancer treatment: A systematic review and network meta-analysis

BACKGROUND

The positive influence of most types of exercise has been reported repeatedly, but what the most effective exercise approaches are for improving health-related quality of life (HRQoL) in people with cancer remains unknown. The aim of this systematic review and network meta-analysis was to synthesize the evidence from intervention studies to assess the effects of different types of exercise on HRQoL during and after cancer treatment.

METHODS

MEDLINE, SPORTDiscus, the Cochrane Library, Web of Science, and Scopus were searched for randomized controlled trials aimed at testing the effects of exercise interventions meant to improve HRQoL in people with cancer. Separate analyses were conducted for HRQoL as measured by general and cancer-specific questionnaires. We also evaluated whether the effects of exercise were different during and after cancer treatment in both the physical and mental HRQoL domains.

RESULTS

In total, 93 studies involving 7435 people with cancer were included. Network effect size estimates comparing exercise intervention vs. usual care were significant for combined exercise (0.35, 95% confidence interval (95%CI): 0.14-0.56) for HRQoL as measured by general questionnaires, and for combined (0.31, 95%CI: 0.13-0.48), mind-body exercise (0.54, 95%CI: 0.18-0.89), and walking (0.39, 95%CI: 0.04-0.74) for HRQoL as measured by cancer-specific questionnaires.

CONCLUSION

Exercise programs combining aerobic and resistance training can be recommended to improve HRQoL during and after cancer treatment. The scarcity and heterogeneity of these studies prevents us from making recommendations about other exercise modalities due to insufficient evidence.

Behaviour change techniques used in lifestyle interventions that aim to reduce cancer-related fatigue in cancer survivors: a systematic review

BACKGROUND

Lifestyle interventions that target dietary and/or physical activity behaviours may impact cancer-related fatigue in cancer survivors. Changing lifestyle may be especially difficult for cancer survivors suffering from cancer-related fatigue. To increase effectiveness of lifestyle interventions, behaviour change techniques (BCTs) can be applied. The aim of this review is to systematically describe which BCTs are applied in lifestyle interventions targeting cancer-related fatigue among cancer survivors who finished primary treatment.

METHODS

PubMed, Scopus, PsycINFO, Cochrane Library and Web of Science were searched to identify randomised controlled trials (RCTs) of dietary and/or physical activity interventions targeting cancer-related fatigue in cancer survivors. The BCT taxonomy was used to code the BCTs that were applied in those interventions. BCTs that were reported in at least 25% of effective interventions were indicated as 'promising BCT', but only retained this classification when these BCTs were present in less than 25% of ineffective interventions.

RESULTS

Twenty-nine RCTs were identified, of which 17 were effective in reducing cancer-related fatigue. The most frequently applied BCTs were Goal setting (behaviour), Instruction on how to perform the behaviour, Demonstration of the behaviour, Behavioural practice/rehearsal, and Credible Source. The BCT 'Generalisation of the target behaviour' was identified as promising. These results should be interpreted with caution as only three studies screened their participants on level of cancer-related fatigue and most studies focused only on physical activity. Furthermore, many studies did not include a measure for actual behaviour change and had no follow-up period after the intervention ended.

CONCLUSIONS

There is a need for studies that screen their participants on level of cancer-related fatigue and a need for studies that focus more on dietary behaviours as a possible intervention to reduce fatigue. Also, studies should include follow-up timepoints after the interventions ends to examine long-term behaviour change. Future lifestyle interventions should describe interventions in detail to allow for easier coding of BCTs, and report on actual behaviour change following the intervention. Interventions may apply the BCT 'Generalisation of the target behaviour' to incorporate lifestyle behaviours in daily life. This may increase the chance that interventions will effectively reduce cancer-related fatigue.

Assessing the Efficacy of a 28-Day Comprehensive Online Prostate Cancer Patient Empowerment Program (PC-PEP) in Facilitating Engagement of Prostate Cancer Patients in Their Survivorship Care: A Qualitative Study

A 28-day Prostate Cancer-Patient Empowerment Program (PC-PEP) developed through patient engagement was successful at promoting mental and physical health. Thirty prostate cancer patients from Halifax, Canada participated in the 28-day PC-PEP intervention in early 2019. PC-PEP encompassed daily patient education and empowerment videos, prescribed physical activities (including pelvic floor exercises), a mostly plant-based diet, stress reduction techniques, intimacy education, social connection, and support. Quantitative exit surveys and semi-structured interviews (conducted in focus groups of ten) were used to assess perceived factors that facilitated or impeded adherence to the program. The program received high praise from the patients and was deemed extremely useful by the participating men, who rated it 9 out of 10. Patients expressed that the multifaceted, online, home-based nature of the program helped them adhere to it better than they would have had to a single or less comprehensive intervention. Feedback from the participants indicated that the program, when viewed as a whole, was perceived as greater than the sum of its individual parts. Furthermore, the program addressed various issues, including emotional vulnerability and distress, physical fitness, urinary incontinence, challenges in expressing emotions, perceived lack of control over healthcare decisions, emotional fragility, and hesitancy to discuss prostate cancer-related matters in social settings. Patients highly (9.6/10) endorsed integrating the program into the standard care regimen from the very beginning of diagnosis. However, challenges such as work commitments were noted. Patients' high endorsement of PC-PEP suggests that its implementation into the standard of care from day one of diagnosis may be warranted.

Supportive care interventions for men with urological cancers: a scoping review

PURPOSE

To identify supportive care interventions for men with urological cancers.

METHODS

Experimental studies conducted among men with any urological cancer were eligible for inclusion. Academic Search Complete, CINAHL Plus with Full Text, MEDLINE, APA PsycArticles, APA PsycInfo, Social Sciences Full Text (H.W. Wilson), SocINDEX with Full Text, ERIC, Google Scholar and ClinicalTrials.gov were searched on 6 December 2022. No database limits were applied. The included studies were methodologically appraised. A narrative synthesis of the results was conducted.

RESULTS

Thirty studies were included with 10 categories of interventions identified. Over 300 outcomes were measured, and more than 100 instruments were used. Multicomponent interventions generally led to positive changes in physiological outcomes like body mass index, as well as exercise tolerance and quality of life. This change, however, was not sustained in the long term. Cognitive-behavioural interventions significantly improved psychological symptoms but seldom physical symptoms. Telephone and web-based interventions showed great promise in improving outcomes like depression, positive affect, negative affect, perceived stress, spiritual wellbeing and fatigue. Findings from physical activity/exercise-based interventions were promising for both, physical and psychological outcomes. Rehabilitative interventions were associated with significant improvements in quality of life, urinary symptoms and psychological symptoms, albeit in the short term. Mixed results were reported for nurse-led interventions, family-based interventions and nutritional interventions.

CONCLUSION

All but one study focused exclusively on prostate cancer. The included studies were significantly heterogeneous. Multicomponent, cognitive-behavioural, telephone and web-based, physical activity/exercise-based and rehabilitative interventions showed great promise in improving various outcomes. This improvement, however, was often short-lived.

Fear of Cancer Recurrence and Coping Strategies among Prostate Cancer Survivors: A Qualitative Study

BACKGROUND

Fear of cancer recurrence (FCR), as a commonly reported problem among prostate cancer survivors, has not been fully understood. This study aimed to explore the experience of FCR and relevant coping strategies among Iranian prostate cancer survivors.

METHODS

Qualitative research was conducted on 13 men who completed treatments for prostate cancer in the last 24 months. The participants were selected through purposeful sampling, and in-depth semi-structured interviews were used for data collection. Conventional content analysis was used for data analysis.

RESULTS

Data analysis led to the emergence of three themes. "Living with insecurity" describes the participants' experiences regarding what triggers FCR with two categories, including "fear of incomplete cure" and "fear of cancer return." In addition, "struggling to cope" with two categories, including "psychological strategies" and "spiritual coping," presents coping strategies used by the participants for reducing FCR. Furthermore, "trying to prevent cancer recurrence" with two categories, "seeking health" and "lifestyle modification," indicates coping strategies used by the participants to prevent cancer recurrence.

CONCLUSIONS

Healthcare providers need to consider the cultural characteristics of prostate cancer survivors when assessing their FCR, encourage them to disclose their concerns and fears, and provide tailored interventions in order to reduce FCR among them.

The influence of lifestyle changes (diet, exercise and stress reduction) on prostate cancer tumour biology and patient outcomes: A systematic review

Background

The mostly indolent natural history of prostate cancer (PCa) provides an opportunity for men to explore the benefits of lifestyle interventions. Current evidence suggests appropriate changes in lifestyle including diet, physical activity (PA) and stress reduction with or without dietary supplements may improve both disease outcomes and patient's mental health.

Objective

This article aims to review the current evidence on the benefits of all lifestyle programmes for PCa patients including those aimed at reducing obesity and stress, explore their affect on tumour biology and highlight any biomarkers that have clinical utility.

Evidence acquisition

Evidence was obtained from PubMed and Web of Science using keywords for each section on the affects of lifestyle interventions on (a) mental health, (b) disease outcomes and (c) biomarkers in PCa patients. PRISMA guidelines were used to gather the evidence for these three sections (15, 44 and 16 publications, respectively).

Evidence synthesis

For lifestyle studies focused on mental health, 10/15 demonstrated a positive influence, although for those programmes focused on PA it was 7/8. Similarly for oncological outcomes, 26/44 studies demonstrated a positive influence, although when PA was included or the primary focus, it was 11/13. Complete blood count (CBC)-derived inflammatory biomarkers show promise, as do inflammatory cytokines; however, a deeper understanding of their molecular biology in relation to PCa oncogenesis is required (16 studies reviewed).

Conclusions

Making PCa-specific recommendations on lifestyle interventions is difficult on the current evidence. Nevertheless, notwithstanding the heterogeneity of patient populations and interventions, the evidence that dietary changes and PA may improve both mental health and oncological outcomes is compelling, especially for moderate to vigorous PA. The results for dietary supplements are inconsistent, and although some biomarkers show promise, significantly more research is required before they have clinical utility.

Community-based interventions designed to optimize health behaviors among cancer survivors: an integrative systematic review

PURPOSE

The purpose of this review was to synthesize the evidence on community-based health behavior optimization interventions (physical activity, nutrition, weight management) with a focus on cancer survivors at risk for poor health outcomes.

METHODS

This integrative review followed the methods and protocol outlined by the Joanna Briggs Institute Methods Manual for systematic reviews and was reported using PRISMA-Scr. Four databases, namely, PubMed, CINAHL, Web of Science, SportDiscus, were searched in March 2021 to identify articles addressing health behaviors among cancer survivors.

RESULTS

The review included 43 articles describing unique interventions developed through community-based participatory research (CBPR). The majority of community-based interventions were designed to optimize exercise/physical activity (76.7%) exclusively or in combination with nutrition. Non-Hispanic White persons constituted most participants. Most interventions took place as a part of an established community program and recruited from existing community programs to evaluate intervention effects on specific health outcomes. Of the interventions, 88.3% improved at least one outcome measurement.

CONCLUSION

The current studies have built on the strengths and resources of the community using existing programs. There was a lack of diversity in socioeconomic status and racial/ethnic background among participants of most interventions and inputs from partners such as cancer survivors, community, and healthcare organizations. Multiple health behavior interventions with longitudinal studies are needed for racial/ethnic minoritized cancer survivors. Future research should focus on achieving mutual benefits through iterative processes to develop sustainable community/research partnerships, ensuring long-term commitment, and disseminating knowledge gained from CBPR to and by all involved partners to improve health behaviors.

Considerations of Control Conditions Designs in Randomized Controlled Trials of Exercise Interventions for Cancer Survivors

Background

Given the multifaceted complexity in the nature of randomized controlled trials, identifying an appropriate and comparable control condition is an essential step to ensure methodological rigor, which allows for researchers to draw unambiguous conclusions concerning the efficacy of the intervention being studied.

Objectives

The objectives of this paper are to (a) review the current literature and analyze the control condition designs in exercise interventions targeted for cancer survivors; (b) provide an overview of the benefits and limitations of various types of control conditions used in exercise interventions; (c) discuss the considerations in the design of control conditions for exercise interventions; and (d) suggest recommendations for control condition design in future trials of behavioral interventions.

Results

The review of randomized controlled trials of exercise training interventions for cancer survivors revealed that the design of control conditions varied. The most commonly employed design could be classified into two major categories: (a) active controls including attention control, add-on controls, and dismantling controls; and (b) inactive controls including no-treatment, usual care, and wait-list control. Examples from the literature are presented. Four principal considerations concerning control condition design, including appropriateness, credibility, appeal, and comparability, are discussed. Recommendations on how to avoid some major threats to validity and potential biases are also provided.

Conclusions

Careful planning for the control group design is as important as for the intervention group. Researchers can use the considerations presented in the paper to assist in planning for the most appropriate control condition for their study.

The relationship between sleep hygiene, mood, and insomnia symptoms in men with prostate cancer

PURPOSE

Insomnia symptoms are commonly experienced by men after prostate cancer (PCa) treatment. Here we explored how sleep hygiene behaviours and psychological symptoms are associated with insomnia symptoms in PCa patients.

METHODS

An online survey was posted on social media and sent to mailing lists of PCa and general cancer organisations. The survey collected information on demographic, sleep hygiene, and psychological symptoms using validated questionnaires.

RESULTS

Data from 142 participants were compared based on the absence (age = 68.3 ± 8.9 years) and presence (age = 66.6 ± 9.0 years) of insomnia symptoms. Participants with insomnia symptoms had significantly higher levels of anxiety, depression, fatigue, and sleepiness as well as poorer sleep hygiene than those without insomnia symptoms. Control variables (age, number of comorbidities, and BMI) accounted for 11.9% of the variance in insomnia symptoms. Including treatment history contributed to an additional 1.6% of the variance in insomnia symptoms. Adding sleepiness, fatigue, anxiety, and depressive symptoms to the model explained an additional 44.6% of the variance in insomnia symptoms. Furthermore, including the sleep hygiene item 'I think, plan, or worry when I am in bed' and 'I sleep in an uncomfortable bedroom' explained an additional 3.6% of the variance in insomnia symptoms.

CONCLUSIONS

Poor sleep hygiene, fatigue, sleepiness, anxiety, and depressive symptoms were all associated with worse insomnia symptoms in PCa patients. Improving sleep hygiene and treating psychological conditions may potentially help prevent and/or alleviate insomnia symptoms in PCa patients.

Do Patients with Prostate Cancer Benefit from Exercise Interventions? A Systematic Review and Meta-Analysis

Men diagnosed and treated for prostate cancer experience severe adverse effects on quality of life (QoL) and metabolic health, some of which may be preventable or reversible with exercise, the benefits of which healthcare providers and patients increasingly acknowledge, though existing evidence on its effects varies in significance and magnitude. We aimed to review the effect of exercise on QoL and metabolic health in a broad prostate cancer population. A systematic search was conducted in nine databases and eligible trials were included in the meta-analytic procedure. All outcomes were stratified into aerobic exercise, resistance exercise, and a combination of both. The review identified 33 randomised controlled trials (2567 participants) eligible for inclusion. Exercise had a borderline small positive effect on cancer-specific QoL (standardised mean difference (SMD) = 0.10, 95% confidence interval (CI) -0.01-0.22), and a moderate to large effect on cardiovascular fitness (SMD = 0.46, 95% CI 0.34-0.59) with aerobic exercise being the superior modality (SMD = 0.60, 95% CI 0.29-0.90). A positive significant effect was seen in lower body strength, whole-body fat mass, general mental health, and blood pressure. No significant effect was seen in fatigue, lean body mass, and general physical health. We thereby conclude that exercise is effective in improving metabolic health in men diagnosed with prostate cancer, with aerobic exercise as the superior modality. The effect of exercise on QoL was small and not mediated by choice of exercise modality.

Effects of Exercise on Sexual Dysfunction in Patients With Prostate Cancer - A Systematic Review

BACKGROUND

Emerging evidence suggests that exercise interventions may improve sexual dysfunction, one of the most common and distressing long-term adverse effects of cancer treatment.

AIM

The aim of this systematic review is to provide an overview of the effects of exercise on sexual dysfunction in prostate cancer patients.

METHODS

A systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses statement. The systematic literature search was performed on 13th July 2021 using CINAHL, Cochrane Central Register of Controlled Trials, Embase, Medline and Web of Science. Studies were included if they were randomized controlled trials (RCTs) assessing sexual function in prostate cancer patients conducting an exercise intervention alone or in combination with other supportive interventions. The methodological quality was assessed using the Physiotherapy Education Database Score and Jadad scale. Outcomes were reported as between-group differences. Intragroup differences were also reported if significant.

OUTCOMES

Positive intervention effects on sexual function were primarily observed in patients following prostatectomy and undergoing anti-hormone treatment and for pelvic floor muscle exercises as well as aerobic and resistance exercise.

RESULTS

22 RCTs (n = 1.752 patients) met the eligibility criteria, conducting either an exercise-only intervention (n = 10), a multimodal (exercise plus other supportive therapy) intervention (n = 4), or pelvic floor muscle exercises (n = 8). 6 RCTs assessed sexual dysfunction as a primary endpoint and 8 RCTs used dedicated assessment methods. 9 of the 22 RCTs found significant between-group differences in favor of the intervention group.

CLINICAL IMPLICATIONS

The multifaceted etiology of sexual dysfunction provides a strong rationale to further investigate the effects of exercise on sexual dysfunction in prostate cancer patients and also to consider a multidisciplinary approach.

STRENGTHS AND LIMITATIONS

A strength is the comprehensive literature search to identify RCTs involving different exercise interventions and a wide range of sexual function assessments. Further, this is the first systematic review on this topic. The main limitations include the difficulty to compare studies due to the heterogeneity of exercise interventions and low questionnaire completion rates in some studies.

CONCLUSION

Preliminary data from a small number of studies suggest that certain exercise interventions may improve sexual dysfunction in prostate cancer patients, however further trials involving sexual dyfunction as a primary outcome and more comprehensive assessment tools are needed to confirm the rehabilitative and preventive effects of exercise on sexual dysfunction in prostate cancer patients. Nadine Reimer, Eva Maria Zopf, Rebecca Böwe, et al. Effects of Exercise on Sexual Dysfunction in Patients With Prostate Cancer - A Systematic Review. J Sex Med 2021;18:1899-1914.

The Association between Insomnia and Orgasmic Difficulty for Prostate Cancer Patients - Implication to Sex Therapy

Sexual dysfunction and insomnia are common side effects of prostate cancer (PCa) treatment, but the link between these symptoms has not been explored. We explore here the association between various sexual parameters and insomnia symptoms in PCa patients. Data were collected via an online survey with recruitment through various PCa organizations. One hundred and forty two patients (age = 67.3 ± 8.9 years) completed the survey. The majority were in a relationship (84.6%), of Caucasian ethnicity (83.1%), and 33% had previously received androgen deprivation therapy (ADT). Control variables-age, number of comorbidities, past ADT use, body mass index, depression, anxiety, fatigue and daytime sleepiness-explained 58.2% of the variance for insomnia symptoms. Including orgasm difficulty in the models accounted for an additional 2.1% in the variance in insomnia symptoms. Conversely, the control variables listed above together with insomnia symptoms predicted 37.7% of the overall variance in orgasm difficulty in PCa patients. These data suggest that sexual rehabilitation programs for PCa patients should assess insomnia symptoms, and therapies to improve sexual function or sleep quality may be beneficial in both functions given the relationship between sleep and orgasm functions in this population.