Exercise training manages cardiopulmonary function and fatigue during and following cancer treatment in male cancer survivors

Immunoprotecting Effects of Exercise Program against Ovarian Cancer: A Single-Blind, Randomized Controlled Trial

Exercise is known to help the immune function of cancer survivors after cancer cell removal, but there is little information about the effect of exercise on ovarian cancer survivors. We conducted this study to investigate the effects of exercise training on the physical fitness and innate immunity of ovarian cancer survivors (OCS). Twenty-seven OCS between forty-two and sixty-one years of age volunteered for this study. The participants were divided into a control group (COG, n = 15) and an exercise group (EXG, n = 12). The mean (SD) age was 51.07 (5.67) years, and the mean post-operation period was 45.96 (5.88) months. EXG participated in regular exercise training 6 days a week for 12 weeks. Body weight, fat mass, and body mass index of EXE were significantly decreased compared with those of COG. The muscle mass in EXE was increased compared to that of COG. Physical fitness factors showed positive changes in EXG compared to COG. We found that exercise training enhanced lymphocyte and neutrophil counts of leucocytes and total natural killer (NK) and natural killer T (NKT) cell counts of lymphocytes through improved body composition and physical fitness after 12 weeks. Moreover, we found that improved innate immune cells through the exercise program were achieved through an increase in NKG2D+NK receptors and a decrease in KIR2DL3+NK receptors in OCS.

Home-based, supervised, and mixed exercise intervention on functional capacity and quality of life of colorectal cancer patients: a meta-analysis

This systematic review and meta-analysis of randomized controlled trials tested the effects of home-based, supervised, or mixed exercise interventions on the functional capacity (FC) and quality of life (QoL) in colorectal cancer patients. A literature search was performed using the PubMed, Embase, Cochrane, and Medline databases. Two reviewers screened the literature through March 10, 2021 for studies related to exercise and colorectal cancer. Of the 1161 screened studies in the initial search, 13 studies met the eligibility criteria (home-based = 6 studies; supervised or mixed = 7 studies). Overall, 706 patients were enrolled in the trials, and 372 patients were submitted to home-based, supervised, or mixed exercise intervention. The overall results from the main meta-analysis showed a significant effect regarding supervised or mixed intervention (6 studies; p = 0.002; I² = 43%; PI 0.41–1.39); however, no significant effect was observed for home-based intervention (5 studies; p = 0.05; I² = 25%; PI − 0.34–0.76). A sensitivity analysis based on studies with intervention adherence ≥ 80% (home-based = 3 studies; supervised or mixed = 4 studies) revealed that home-based intervention or intervention entirely supervised or with some level of supervision (mixed) are effective in improving the QoL and FC of CRC patients. In summary, this meta-analysis verified that supervised and home-based exercise can modify QoL and FC when intervention adherence ≥ 80%. Regardless of the supervision characteristics, future RCTs are strongly encouraged to provide a detailed description of the exercise variables in physical interventions for CRC prescription. This perspective will allow a refined exercise prescription for patients with CRC, mainly according to their clinical status.

Effect of Resistance Exercise on Acquired Immunocytes in Cancer Survivors: A Pilot Study

Purpose

The purpose of this study was to elucidate the effect of resistance exercise on skeletal muscle mass-related fitness and acquired immune cell function in ovarian cancer survivors.

Methods

Twelve ovarian cancer survivors aged 33–61 years participated voluntarily in this study and were divided into control group (CG, n=6) and exercise group (EG, n=6). They underwent removal of ovarian cancer and received regular care for over one year. Resistance exercise was used as the intervention program conducted 4 days a week for 12 weeks. Skeletal muscle mass, muscle strength, and endurance were assessed at baseline and at week 12. Other dependent variables included adaptive immunocytes related to helper T (Th) cells and immunosuppressors (CD4+ and CD8+).

Results

After the intervention, skeletal muscle mass showed positive changes in EG com-pared to CG, although not significantly different. Muscle strength and endurance significantly increased in EG, while there was no significant change in CG. Th1, Th2, and Th1/Th2 ratio were significantly different between both groups. CD4+CD25+T cells and CD4+PD-1+T cells of EG were lower than those of CG. CD8+PD-1+T cells and CD8+TIGIT+T of EG were lower than those of CG. These results can be interpreted as the improved sensitivity of CD4+ and CD8+, which helps the secretion of myokines and cytokines, when cytotoxic substances are injected into the human body.

Conclusions

This study suggests that resistance training improves upon desirable changes in adaptive immune cell responses in ovarian cancer survivors by maintaining skeletal muscle mass while developing strength and endurance.

Group-based Exercise Therapy Improves Psychosocial Health and Physical Fitness in Breast Cancer Patients in Hawai'i

Cancer diagnosis and treatment often negatively impact quality of life, worsening prognosis, and long-term survival in cancer patients. Rehabilitation is effective at reversing cancer-related effects, but these services are not standardized. An implementation study was conducted to determine the usability and efficacy of group-based exercise therapy delivered from an outpatient therapy clinic. Thirty breast cancer patients (mean age ± standard deviation [SD],= 55 ± 10 years) completed 36 90-minute group-based exercise sessions in small groups. Team-based exercises were used to foster peer interaction and social support. Usability was evaluated with participant feedback, adherence, and occurrence of adverse events. Effectiveness was measured with the Revised Piper Fatigue, the City of Hope Quality of Life (QOL), and the Beck Depression Inventories. Paired t-tests and 2-way ANOVAs were used to detect significance (P<.05); Cohen's d was used to measure effect size. Twenty-five patients completed the program; they reported that they liked the program design. One anticipated, moderate adverse event occurred. The intervention improved fatigue and QOL, where significant main effects of time were detected [Fatigue: (F(1,76)=29.78, P <.001); QOL: (F(1,80)=24.42, P<.0001)]. Improvements in the fatigue inventory's behavioral/security and sensory dimensions (Cohen's d=-0.43 and ȡ0.68, respectively) and the physical dimension of the QOL inventory were detected (Cohen's d=0.92). There were no significant changes in depression (P=.0735). Seven patients continued to participate in exercise classes for 2.5-years post-intervention, demonstrating achievability of program maintenance. Providing group-based exercise therapy services at an outpatient clinic is an effective and practical approach to improve cancer patients' QOL.

Effect of Tai Chi and Resistance Training on Cancer-Related Fatigue and Quality of Life in Middle-Aged and Elderly Cancer Patients

OBJECTIVE

To study the effect of Tai Chi (TC) and resistance training (RT) with different intensity on the cancer-related fatigue (CRF) and quality of life (QoL) of middle-aged and elderly cancer patients.

METHODS

Totally 120 cancer patients were enrolled and randomly assigned to 4 groups by a random number table, including TC group, high-intensity 60% one repetition maximum (1-RM) RT group (HIRT), low-intensity (30% 1-RM) RT group (LIRT) and control group, 30 patients in each group. Participants in the TC group received 24-form simplified Yang-style TC training at a frequency of 40 min per day, 3 days per week for 12 weeks. Patients in the two RT groups received 10 sessions, 6 designated movements per day, 3 days per week for 12 weeks. The 1-RM of 6 muscle groups, fat mass (FM), lean body mass (LBM), along with the scores of Brief Fatigue Inventory (BFI), QoL questionnaire for Chinese cancer patients receiving chemobiotherapy (QLQ-CCC), Generalized Anxiety Disorder-7 (GAD-7), Patient Health Questionnaire-9 (PHQ-9) and Pittsburgh Sleep Quality Index (PSQI) were measured before and after training. The adverse effect was also observed.

RESULTS

After 12-week intervention, patients in both TC and RT groups showed significant improvements in CRF and QLQ-CCC compared to pre-treatment (P<0.05). Compared with the LIRT and TC groups, patients in the HIRT group improved more significantly in increasing muscle strength and LBM, and reducing in FM (P<0.05). Patients in the TC group significantly increased in lower limb muscle strength compared with the LIRT group (P<0.05). In addition, patients in the TC group showed more significant improvements in scores of GAD-7, PHQ-9 and PSQI than 2 RT groups (P<0.05).

CONCLUSIONS

TC and RT, both low- and high-intensity training, can significantly increase muscle strength, reduce CRF and improve QoL in the middle-aged and elderly cancer patients. TC has a better effect than RT in terms of sleep quality and mental health. The long-term application is needed to substantiate the effect of TC as an alternative exercise in cancer patients.

Exercise and Physical Activity in Patients with Osteosarcoma and Survivors

Exercise has the potential to positively affect patients with osteosarcoma by improvement of function, mitigation of disability, and maintenance of independence and quality of life. Exercise may also directly impact cancer treatment efficacy. This chapter examines the feasibility and use of exercise or physical activity as therapy in the treatment of osteosarcoma and its survivors. It additionally presents the benefits of physical activity as treatment and rehabilitation both preoperatively (prehabilitation) and postoperatively. This chapter will also discuss barriers to exercise and physical activity for patients with osteosarcoma and its survivors, emphasizing the need for a comprehensive and cohesive support system to promote its incorporation into patient treatment plans and ensure compliance.

Exercise as an Intervention to Mitigate Decreased Cognitive Function From Cancer and Cancer Treatment: An Integrative Review

BACKGROUND

Decreased cognitive function associated with non-central nervous system cancers and cancer treatment significantly affects cancer survivors' quality of life. Exercise may be an effective intervention to mitigate decreased cognitive function.

OBJECTIVE

The aim of this article is to conduct an integrative review to summarize and critique the available evidence related to the use of exercise as a potential intervention for decreased cognitive function from cancer and cancer treatment.

METHODS

We conducted an integrative review through January 2016 utilizing PubMed, CINAHL, and PsycINFO. Broad inclusion criteria included any quantitative study in which cognitive outcomes were reported in relationship to any type of exercise for adult cancer survivors. Effect sizes were calculated when possible based on available data.

RESULTS

Twenty-six studies were included for review. The majority of studies (including aerobic or resistance exercise as well as mindfulness-based exercise) were associated with some improved cognitive outcomes. However, studies varied significantly in levels of evidence, cognitive domains assessed, and types of cognitive measures. Less than half of the studies included objective measures of cognitive function.

CONCLUSIONS

The evidence shows promising trends for the use of exercise as a potential intervention for improving cognitive function following cancer and cancer treatment, but questions remain concerning exercise type, timing of initiation, intensity, frequency, and duration.

IMPLICATIONS FOR PRACTICE

Additional research is warranted to understand how various types of exercise influence cognitive function in the cancer survivor population and to better understand the mechanisms driving these effects. Trial designs that include both objective and subjective measures of cognitive function are needed.

The effect of a 12-week home-based walking program on reducing fatigue in women with breast cancer undergoing chemotherapy: A randomized controlled study

BACKGROUND

Fatigue is the most common symptom experienced by cancer patients during treatment and can last long after completing treatment. Fatigue in cancer patients who have completed treatment is well known to be reduced by exercise, but the effect of exercise on reducing fatigue in patients under treatment has been inconsistent.

OBJECTIVES

The purposes of this study were to examine short-term and long-term effects of an individually tailored, home-based brisk walking program on reducing fatigue in breast cancer patients under chemotherapy.

DESIGN, SETTING, PARTICIPANTS

For this randomized controlled trial, women were recruited from a medical center in northern Taiwan if they were diagnosed with stages I-III breast cancer and experienced insomnia, fatigue, pain, or depressive symptoms after their first cycle of chemotherapy. Consenting participants (N = 159) were randomly assigned to either an exercise (12-week home-based walking program) group (n = 81) or an attention-control group (n = 78).

METHODS

The 12-week, home-based brisk walking program started on the first day of the third chemotherapy cycle. Fatigue was measured by the Brief Fatigue Inventory. Covariates, i.e., functional performance, sleep disturbance, anxiety, depression, and exercise-related variables, were also measured. Data were collected at baseline, two times during the exercise intervention, and five times after the exercise intervention (eight times in total). The effects of time-varying and time-invariant predictors on fatigue were analyzed by multilevel modeling.

RESULTS

Fatigue levels increased over time for both groups, even after completing treatment. At the end of the 12-week exercise program, the exercise group had less fatigue than the attention-control group, and this group difference was maintained for the whole study period. At the end of exercise program, women who had spent more time exercising before diagnosis had less fatigue than those who had exercised less often. In addition, patients' fatigue levels at various time points fluctuated along with their functional performance, sleep disturbance, and depression.

CONCLUSIONS

Our tailored, home-based brisk walking program effectively reduced fatigue in breast cancer patients under chemotherapy, and this effect lasted after completing treatment.

Exercise training undertaken by people within 12 months of lung resection for non-small cell lung cancer

BACKGROUND

Decreased exercise capacity and health-related quality of life (HRQoL) are common in people following lung resection for non-small cell lung cancer (NSCLC). Exercise training has been demonstrated to confer gains in exercise capacity and HRQoL for people with a range of chronic conditions, including chronic obstructive pulmonary disease and heart failure, as well as in people with prostate and breast cancer. A programme of exercise training may also confer gains in these outcomes for people following lung resection for NSCLC. This systematic review updates our 2013 systematic review.

OBJECTIVES

The primary aim of this review was to determine the effects of exercise training on exercise capacity and adverse events in people following lung resection (with or without chemotherapy) for NSCLC. The secondary aims were to determine the effects of exercise training on other outcomes such as HRQoL, force-generating capacity of peripheral muscles, pressure-generating capacity of the respiratory muscles, dyspnoea and fatigue, feelings of anxiety and depression, lung function, and mortality.

SEARCH METHODS

We searched for additional randomised controlled trials (RCTs) in the Cochrane Central Register of Controlled Trials (CENTRAL) (the Cochrane Library 2019, Issue 2 of 12), MEDLINE (via PubMed) (2013 to February 2019), Embase (via Ovid) (2013 to February 2019), SciELO (The Scientific Electronic Library Online) (2013 to February 2019), and PEDro (Physiotherapy Evidence Database) (2013 to February 2019).

SELECTION CRITERIA

We included RCTs in which participants with NSCLC who underwent lung resection were allocated to receive either exercise training, which included aerobic exercise, resistance exercise, or a combination of both, or no exercise training.

DATA COLLECTION AND ANALYSIS

Two review authors screened the studies and identified those eligible for inclusion. We used either postintervention values (with their respective standard deviation (SD)) or mean changes (with their respective SD) in the meta-analyses that reported results as mean difference (MD). In meta-analyses that reported results as standardised mean difference (SMD), we placed studies that reported postintervention values and those that reported mean changes in separate subgroups. We assessed the certainty of evidence for each outcome by downgrading or upgrading the evidence according to GRADE criteria.

MAIN RESULTS

Along with the three RCTs included in the original version of this review (2013), we identified an additional five RCTs in this update, resulting in a total of eight RCTs involving 450 participants (180 (40%) females). The risk of selection bias in the included studies was low and the risk of performance bias high. Six studies explored the effects of combined aerobic and resistance training; one explored the effects of combined aerobic and inspiratory muscle training; and one explored the effects of combined aerobic, resistance, inspiratory muscle training and balance training. On completion of the intervention period, compared to the control group, exercise capacity expressed as the peak rate of oxygen uptake (VO₂peak) and six-minute walk distance (6MWD) was greater in the intervention group (VO₂peak: MD 2.97 mL/kg/min, 95% confidence interval (CI) 1.93 to 4.02 mL/kg/min, 4 studies, 135 participants, moderate-certainty evidence; 6MWD: MD 57 m, 95% CI 34 to 80 m, 5 studies, 182 participants, high-certainty evidence). One adverse event (hip fracture) related to the intervention was reported in one of the included studies. The intervention group also achieved greater improvements in the physical component of general HRQoL (MD 5.0 points, 95% CI 2.3 to 7.7 points, 4 studies, 208 participants, low-certainty evidence); improved force-generating capacity of the quadriceps muscle (SMD 0.75, 95% CI 0.4 to 1.1, 4 studies, 133 participants, moderate-certainty evidence); and less dyspnoea (SMD -0.43, 95% CI -0.81 to -0.05, 3 studies, 110 participants, very low-certainty evidence). We observed uncertain effects on the mental component of general HRQoL, disease-specific HRQoL, handgrip force, fatigue, and lung function. There were insufficient data to comment on the effect of exercise training on maximal inspiratory and expiratory pressures and feelings of anxiety and depression. Mortality was not reported in the included studies.

AUTHORS' CONCLUSIONS

Exercise training increased exercise capacity and quadriceps muscle force of people following lung resection for NSCLC. Our findings also suggest improvements on the physical component score of general HRQoL and decreased dyspnoea. This systematic review emphasises the importance of exercise training as part of the postoperative management of people with NSCLC.

Effect of the Walking Exercise Program on Cancer-Related Fatigue in Patients with Acute Myeloid Leukemia Undergoing Chemotherapy

Background:

Cancer-related Fatigue (CRF) is one of the most common complications of acute myeloid leukemia (AML) and its related therapies. It can influence all physical and psychological aspects of the patient’s life. Also, it is believed that exercise can improve CRF in patients with cancer.

Objective:

This study aimed to investigate the effect of the walking exercise program on CRF in patients with AML undergoing chemotherapy.

Methods:

In this quasi-experimental study with a pre- and post-test design, 50 patients with AML undergoing chemotherapy were selected using a convenience sampling method at a teaching hospital in an urban area of Iran. The intervention included daily 30 minutes of planned walking for ten days. Data was collected using a demographic data form and the Brief Fatigue Inventory, which were filled out before the intervention, and on the fifth and tenth days of the intervention.

Findings:

Statistically significant differences were reported in the reduction of CRF on the fifth day and tenth day of the intervention (p <0.001).

Conclusions:

The planned walking intervention can be used as an easy and low-cost method for reducing CRF in patients with leukemia.

Exercise Protects against Cancer-induced Cardiac Cachexia

Cancer has been shown to negatively stimulate autophagy, leading to a decline in cardiac function. Although exercise is cardioprotective, its influence over autophagy-mediated tumor growth and cardiac function are not well defined.

PURPOSE

This study aimed to determine the effect of exercise on tumor morphology and cardiac function.

METHODS

Fisher 344 rats (n = 28) were assigned to one of four groups: 1) sedentary non-tumor bearing (SED), 2) sedentary tumor bearing (SED + T), 3) wheel run non-tumor bearing (WR), or 4) wheel run tumor bearing (WR + T). Rats remained sedentary or exercised for 6 wk. At week 4, rats in tumor groups were inoculated with MatBIII tumor cells. At week 6, cardiac function was measured.

RESULTS

SED + T animals exhibited significantly lower left ventricular developed pressure when compared with SED, WR, and WR + T (P < 0.05). This coincided with a significant increase in cardiac autophagy (increased LC3-II) in SED + T animals when compared with SED, WR, and WR + T (P < 0.05). Furthermore, SED + T hearts showed a significant increase in β-myosin heavy chain expression versus nontumor groups (P < 0.05). Tumor mass was significantly larger (P < 0.001) in SED + T animals when compared with WR + T animals, which was accompanied by a significant increase in tumor LC3-II protein expression (P < 0.05).

CONCLUSION

Nonexercised tumor-bearing rats showed severe cardiac dysfunction and excessive, maladaptive autophagy in the heart and tumors. Voluntary exercise preserved cardiac function and attenuated the autophagic response in heart and tumor tissues. This preservation may be related to the reduced tumor growth in aerobically exercised rats, to the improved regulation of autophagy by exercise, or both.

Feasibility of a combined aerobic and cognitive training intervention on cognitive function in cancer survivors: a pilot investigation

BACKGROUND

Cancer-related cognitive impairment (CRCI) may negatively affect upwards of 75% of cancer patients. Exercise and cognitive training, independently, may increase functional capacity and aspects of cognitive function. Yet, combined training protocols have not been evaluated in cancer survivor populations. Therefore, the aim of this study was to explore the feasibility of a quasi-randomized, controlled, exploratory, repeated-measures aerobic and cognitive training intervention on cognitive function in participants undergoing treatment for cancer (N = 28).

METHODS

Pre- and post-physical and cognitive assessments were administered. A 36-session (approximately 12 weeks) computer-based cognitive (COG), aerobic (AER), cognitive and aerobic (AER + COG), and flexibility (CON) training intervention was completed. Dependent measures t tests and pre- to post percentages were then calculated to address within-group changes for each dependent variable.

RESULTS

Within-group measures revealed that the AER logical memory scores (pre- to post mean difference [2.3], 95.0% CI [0.9, 3.7], percentage change [32.7%]), delayed recall scores (pre- to post mean difference [2.1], 95.0% CI [0.3, 3.9], percentage change [27.2%]), block design scores (pre- to post mean difference [1.7], 95.0% CI [0.2, 3.2], percentage change [19.0%]), and letter-number sequencing scores (pre- to post mean difference [1.0], 95.0% CI [0.2, 1.8], percentage change [12.3%]) all increased. Aspects of verbal fluidity scores increased in the CON group. However, all cognitive scores (AER + COG and COG groups) failed to increase.

CONCLUSIONS

Aerobic training for CRCI may positively impact cognitive function. Individually, these methods may appropriately address CRCI, but combined training of this nature may be too demanding for patients undergoing treatment for cancer. However, larger randomized trials are needed to substantiate this protocol in large-scale cancer rehabilitation centers.

Recruitment to and pilot results of the PACES randomized trial of physical exercise during adjuvant chemotherapy for colon cancer

PURPOSE

We report the recruitment rate, reasons for and factors influencing non-participation, and descriptive results of a randomized controlled trial of two different exercise programs for patients with colon cancer undergoing adjuvant chemotherapy.

METHODS

Participants were randomized to a low-intensity, home-based program (Onco-Move), a moderate- to high-intensity, combined supervised resistance and aerobic exercise program (OnTrack), or Usual Care. Non-participants provided reasons for non-participation and were asked to complete a questionnaire assessing behavioral and attitudinal variables. Trial participants completed performance-based and self-reported outcome measures prior to randomization, at the end of chemotherapy, and at the 6-month follow-up.

RESULTS

Twenty-three of 63 referred patients agreed to participate in the trial. All 40 non-participants provided reasons for non-participation. Forty-five percent of the non-participants completed the questionnaire. Those who did not want to exercise had higher fatigue scores at baseline and a more negative attitude toward exercise. Compliance to both programs was high and no adverse events occurred. On average, the colon cancer participants were able to maintain or improve their physical fitness levels and maintain or decrease their fatigue levels during chemotherapy and follow-up.

CONCLUSIONS

Recruitment of patients with colon cancer to a physical exercise trial during adjuvant chemotherapy proved to be difficult, underscoring the need to develop more effective strategies to increase participation rates. Both home-based and supervised programs are safe and feasible in patients with colon cancer undergoing chemotherapy. Effectiveness needs to be established in a larger trial.

TRIAL REGISTRATION

Netherlands Trial Register - NTR2159.

Systematic review of exercise training in colorectal cancer patients during treatment

Colorectal cancer surgery results in considerable postoperative morbidity, mortality and reduced quality of life. As many patients will undergo additional (neo)adjuvant therapy, it is imperative that each individual optimize their physical function. To elucidate the potential of exercise in patient optimization, we investigated the evidence for an exercise program before and after surgical treatment in colorectal cancer patients. A systematic review was conducted according to the Cochrane Handbook for Systematic Reviews of Interventions, the guidelines of the Physical Therapy Journal and the PRISMA guidelines. No literature pertaining to exercise training during preoperative neoadjuvant treatment was found. Seven studies, investigating the effects of regular exercise during adjuvant chemotherapy for patients with colorectal cancer or a mixed population, were identified. A small effect (effect size (ES) 0.4) of endurance/interval training and strength training (ES 0.4) was found in two studies conducted in patients with colorectal and gastrointestinal cancer. In five studies that included a mixed population of cancer patients, interval training resulted in a large improvement (ES 1.5; P≤.05). Endurance training alone was found to increase both lower extremity strength and endurance capacity. The effects of strength training in the lower extremity are moderate, whereas, in the upper extremity, the increase is small. There is limited evidence available on exercise training during treatment in colorectal cancer patients. One study concluded exercise therapy may be beneficial for colorectal cancer patients during adjuvant treatment. The possible advantages of training during neoadjuvant treatment may be explored by prehabilitation trials.

Oxidative Stress and Fitness Changes in Cancer Patients after Exercise Training

INTRODUCTION

The purpose of this study was to determine the effect of an exercise intervention (EX) on muscular strength, cardiorespiratory fitness (CRF), and oxidative stress in cancer survivors compared with a nonexercising cancer control group (CON).

METHODS

Fifteen cancer patients and seven age-matched individuals with no history of cancer (NC) participated in this study. A blood draw and assessments of muscular strength and CRF were administered to cancer survivors within 6 wk of completing radiation or chemotherapy, and again 10 wk later. Eight cancer patients completed a 10-wk supervised exercise intervention, whereas seven continued standard care. Baseline oxidative stress was compared between cancer patients and the NC group. Changes in plasma protein carbonyls, 8-OHdG, and Trolox equivalent antioxidant capacity were compared between groups using repeated-measures ANOVA, and correlations between fitness and oxidative stress changes were evaluated.

RESULTS

Baseline antioxidant capacity was significantly lower, and plasma protein carbonyls were significantly higher in cancer patients compared with NC (P = 0.001). EX had a significant increase in antioxidant capacity (P < 0.001) and decrease in protein carbonyls (P = 0.023), whereas CON did not. Improvements in composite arm (41%, P = 0.002) and leg strength (34%, P = 0.008), isometric handgrip strength (11%, P = 0.015), and V˙O2peak (16%, P = 0.018) were significant in EX but not in CON. 8-OHdG changes were significantly correlated with changes in V˙O2peak (r = -0.89, P < 0.001), arm strength (r = -0.67, P = 0.004), and leg strength (r = -0.56, P = 0.019).

CONCLUSION

A whole-body exercise intervention for cancer survivors may be an effective method of concurrently increasing muscular strength, CRF, and antioxidant capacity while decreasing markers of oxidative stress.

Physical exercise is effective in preventing cigarette smoke-induced pulmonary oxidative response in mice

Reactive oxygen species (ROS) are important in the pathogenesis of pulmonary injury induced by cigarette smoke (CS) exposure, and physical exercise (Ex) is useful in combating impaired oxidative process. We verified the preventive effects of Ex on lung oxidative markers induced by smoking. In this study, 36 mice (C57BL-6, 30-35 g) were split into four groups: control, CS, Ex, and CS plus Ex. Ex groups were given prior physical training in water (2×30 min/d, 5 days/wk, 8 weeks). After training, the CS groups were subjected to passive exposure to four cigarettes, 3 × per day, for 60 consecutive days. After 24 hours from the last exposure, CS animals were sacrificed, and lung samples were collected for further analysis. Left lung sample was prepared for histological analysis, and right lung was used for biochemical analysis (superoxide, hydroxyproline, lipid peroxidation [thiobarbituric acid reactive species], protein carbonylation [carbonyl groups formation], superoxide dismutase [SOD], catalase [CAT], and glutathione peroxidase [GPx] activities). Group comparisons were evaluated by analysis of variance (ANOVA). Results were expressed as mean ± standard deviation, with P<0.05 considered significantly different. Preventive Ex impeded histological changes and increased the enzymatic defense system (SOD and GPx) by reducing oxidative damage in lipids and proteins. This preventive effect of prior physical Ex alleviates damage caused by CS exposure.

Cancer Type Does Not Affect Exercise-Mediated Improvements in Cardiorespiratory Function and Fatigue

Purpose. Despite mounting evidence indicating that exercise training has a positive effect on cancer recovery, the influence of cancer type on the response to exercise training remains uncharacterized. Therefore, the adaptations to exercise training were compared between groups composed of 7 different forms of cancer. Methods. A total of 319 cancer survivors completed fatigue inventories and participated in assessments of cardiorespiratory function, which encompassed aerobic capacity (VO2peak), pulmonary function (forced vital capacity [FVC] and forced expiratory volume in 1 second [FEV1]), and resting blood pressure and heart rate. Participants were divided into 7 groups based on cancer type, including breast cancer (BC, n = 170), prostate cancer and other male urogenital neoplasia (PC, n = 38), hematological malignancies (HM, n = 34), colorectal cancer (CC, n = 25), gynecological cancers (GC, n = 20), glandular and epithelial neoplasms (GEN, n = 20), and lung cancer (LC, n = 12). All participants completed an individualized, multimodal exercise intervention consisting of cardiorespiratory, flexibility, balance, and muscular strength training 3 days per week for 3 months. Following the intervention, all subjects were reassessed. Generalized Estimating Equations with exchangeable working correlation structure was used to model each response; the group by time interaction effect represented the effect of cancer type on exercise-associated improvements. Results. No significant ( P > .05) group by time interaction effects were observed between different types of cancer for any parameter. Pre- to postexercise contrasts revealed significant improvements in VO2peak in BC, PC, HM, and GEN at the Bonferroni adjusted significance level (.00714). Heart rate was significantly lowered in the BC and CC groups. Mean fatigue indices decreased by at least 17% in all groups, but these changes were only significant in the BC, HM, CC, and GC groups. Systolic blood pressure decreased significantly in BC and GC, and diastolic blood pressure decreased significantly only in the BC group while pulmonary function remained unchanged in all cancer types. Conclusion. Although trends toward improved cardiorespiratory and fatigue parameters only reached significance in some groups, there were no significant differences between cancer types. This suggests that cardiorespiratory and fatigue improvements following rehabilitative exercise are not dependent on cancer type. Further research investigating alternative physiological parameters are needed to confirm the relationship between cancer type and exercise-mediated rehabilitation.

Physiotherapy practice patterns for patients undergoing surgery for lung cancer: a survey of hospitals in Australia and New Zealand

BACKGROUND

There has been a recent increase in the research available to guide physiotherapy management of patients who require surgical resection for lung cancer. It is unclear whether this evidence has influenced clinical practice.

AIM

To describe physiotherapy practice patterns in the preoperative and postoperative management of patients who undergo surgical resection for lung cancer.

METHODS

Physiotherapists involved in the management of patients who require surgical resection for lung cancer at hospitals across Australia and New Zealand were mailed a purpose-designed questionnaire.

RESULTS

The response rate was 91% (43/47). Prior to surgery, 40% (n = 17) of the respondents indicated that patients were not assessed by a physiotherapist. In most hospitals (n = 39; 91%), patients did not participate in supervised exercise training before surgery. Most commonly, physiotherapy was commenced on the day following surgery (n = 39; 91%), with walking-based exercise being the treatment that was most frequently implemented in all patients (n = 40; 93%). Seventy-two per cent of respondents referred less than 25% of patients to pulmonary rehabilitation on discharge from hospital. Physiotherapy assessment and treatment choices were influenced predominantly by established practice in the hospital and personal experience rather than research findings.

CONCLUSION

In people who undergo surgical resection for lung cancer, physiotherapy services focused on reducing or preventing postoperative pulmonary complications. Despite recent data suggesting that exercise training is beneficial in this population, our data indicate that referral to pulmonary rehabilitation was uncommon.

Cancer, physical activity, and exercise

This review examines the relationship between physical activity and cancer along the cancer continuum, and serves as a synthesis of systematic and meta-analytic reviews conducted to date. There exists a large body of epidemiologic evidence that conclude those who participate in higher levels of physical activity have a reduced likelihood of developing a variety of cancers compared to those who engage in lower levels of physical activity. Despite this observational evidence, the causal pathway underlying the association between participation in physical activity and cancer risk reduction remains unclear. Physical activity is also a useful adjunct to improve the deleterious sequelae experienced during cancer treatment. These deleterious sequelae may include fatigue, muscular weakness, deteriorated functional capacity, and many others. The benefits of physical activity during cancer treatment are similar to those experienced after treatment. Despite the growing volume of literature examining physical activity and cancer across the cancer continuum, a number of research gaps exist. There is little evidence on the safety of physical activity among all cancer survivors, as most trials have selectively recruited participants. The specific dose of exercise needed to optimize primary cancer prevention or symptom control during and after cancer treatment remains to be elucidated.

"EXHALE": exercise as a strategy for rehabilitation in advanced stage lung cancer patients: a randomized clinical trial comparing the effects of 12 weeks supervised exercise intervention versus usual care for advanced stage lung cancer patients

Background

Lung cancer is the leading cause of cancer death in North America and Western Europe. Patients with lung cancer in general have reduced physical capacity, functional capacity, poor quality of life and increased levels of anxiety and depression. Intervention studies indicate that physical training can address these issues. However, there is a lack of decisive evidence regarding the effect of physical exercise in patients with advanced lung cancer. The aim of this study is to evaluate the effects of a twelve weeks, twice weekly program consisting of: supervised, structured training in a group of advanced lung cancer patients (cardiovascular and strength training, relaxation).

Methods/Design

A randomized controlled trial will test the effects of the exercise intervention in 216 patients with advanced lung cancer (non-small cell lung cancer (NSCLC) stage IIIb - IV and small cell lung cancer (SCLC) extensive disease (ED)). Primary outcome is maximal oxygen uptake (VO₂peak). Secondary outcomes are muscle strength (1RM), functional capacity (6MWD), lung capacity (Fev1) and patient reported outcome (including anxiety, depression (HADS) and quality of life (HRQOL)).

Discussion

The present randomized controlled study will provide data on the effectiveness of a supervised exercise intervention in patients receiving systemic therapy for advanced lung cancer. It is hoped that the intervention can improve physical capacity and functional level, during rehabilitation of cancer patients with complex symptom burden and help them to maintain independent function for as long as possible.

Trial registration

http://ClinicalTrials.gov, NCT01881906

Ten Weeks of Home-Based Exercise Attenuates Symptoms of Chemotherapy-Induced Peripheral Neuropathy in Breast Cancer Patients

The purpose of this investigation was to determine if a structured, home-based exercise program was beneficial to reduce symptoms of chemotherapy-induced peripheral neuropathy and improve quality of life (QOL). A total of 50 women who are breast cancer survivors and are listed in the Breast Cancer Registry of Greater Cincinnati database were recruited by mail. Participants were initially asked to complete the McGill QOL questionnaire and the Leeds Assessment of Neuropathic Symptoms and Signs, before beginning a 10-week home-based exercise program. At the completion of the exercise program, subjects were asked again to complete the same two questionnaires. Pre- and post-intervention data were analyzed using a repeated measures ANOVA, at a significance level of α<0.05. Six individuals completed the investigation. Prior to the 10-week exercise program, participants described their pain as unpleasant skin sensations (Pre-HBEx, N=6), abnormally sensitive to touch (Pre-HBEx, N=6), and coming on suddenly in bursts for no apparent reason (Pre-HBEx, N=5). Following 10-weeks of exercise, participants reported experiencing less of these symptoms (Post-HBEx, N=3, 1, and 4 respectively; P=0.05). It was also determined that troublesome symptoms were significantly reduced after 10-weeks of home-based exercise (P=0.05).

Exercise training undertaken by people within 12 months of lung resection for non-small cell lung cancer

BACKGROUND

Decreased exercise capacity and impairments in health-related quality of life (HRQoL) are common in people following lung resection for non-small cell lung cancer (NSCLC). Exercise training has been demonstrated to confer gains in exercise capacity and HRQoL for people with a range of chronic conditions, including chronic obstructive pulmonary disease and heart failure, as well as in people with cancers such as prostate and breast cancer. A programme of exercise training for people following lung resection for NSCLC may confer important gains in these outcomes. To date, evidence of its efficacy in this population is unclear.

OBJECTIVES

The primary aim of this study was to determine the effects of exercise training on exercise capacity in people following lung resection(with or without chemotherapy) for NSCLC. The secondary aims were to determine the effects on other outcomes such as HRQoL,lung function (forced expiratory volume in one second (FEV1)), peripheral muscle force, dyspnoea and fatigue as well as feelings of anxiety and depression.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2013, Issue 2 of 12), MEDLINE(via PubMed) (1966 to February 2013), EMBASE (via Ovid) (1974 to February 2013), SciELO (The Scientific Electronic Library Online) (1978 to February 2013) as well as PEDro (Physiotherapy Evidence Database) (1980 to February 2013).

SELECTION CRITERIA

We included randomised controlled trials (RCTs) in which study participants withNSCLC, who had recently undergone lung resection,were allocated to receive either exercise training or no exercise training.

DATA COLLECTION AND ANALYSIS

Two review authors screened the studies and identified those for inclusion. Meta-analyses were performed using post-intervention datafor those studies in which no differences were reported between the exercise and control group either: (i) prior to lung resection, or(ii) following lung resection but prior to the commencement of the intervention period. Although two studies reported measures of quadriceps force on completion of the intervention period, meta-analysis was not performed on this outcome as one of the two studies demonstrated significant differences between the exercise and control group at baseline (following lung resection).

MAIN RESULTS

We identified three RCTs involving 178 participants. Three out of the seven domains included in the Cochrane Collaboration' s 'seven evidence-based domains' table were identical in their assessment across the three studies (random sequence generation, allocation concealment and blinding of participants and personnel). The domain which had the greatest variation was 'blinding of outcome assessment' where one study was rated at low risk of bias, one at unclear risk of bias and the remaining one at high risk of bias. On completion of the intervention period, exercise capacity as measured by the six-minute walk distance was statistically greater in the intervention group compared to the control group (mean difference (MD) 50.4 m; 95% confidence interval (CI) 15.4 to 85.2 m). No between-group differences were observed in HRQoL (standardised mean difference (SMD) 0.17; 95% CI -0.16 to 0.49) or FEV1 (MD-0.13 L; 95% CI -0.36 to 0.11 L). Differences in quadriceps force were not demonstrated on completion of the intervention period.

AUTHORS' CONCLUSIONS

The evidence summarised in our review suggests that exercise training may potentially increase the exercise capacity of people following lung resection for NSCLC. The findings of our systematic review should be interpreted with caution due to disparities between the studies, methodological limitations, some significant risks of bias and small sample sizes. This systematic review emphasises the need for larger RCTs..

Rehabilitative exercise in a rat model of doxorubicin cardiotoxicity

The use of exercise to minimize doxorubicin (DOX)-induced cardiotoxicity is gaining attention. However, very few clinically relevant reports exist investigating the effects of exercise performed during and following DOX treatments. The purpose of this study, therefore, was to examine the effects of voluntary wheel running during and following DOX treatment using two models of late-onset DOX cardiotoxicity in the rat. Female Sprague-Dawley rats received either DOX or saline injections using one of two separate treatment regimens. These regimens involved either daily or weekly DOX injections with cumulative doses for both protocols totaling 15 mg/kg. Daily DOX injections were 1 mg/kg and lasted for 15 consecutive days while weekly DOX injections were 2.5 mg/kg and lasted for six consecutive weeks with control animals receiving matched saline injection regimens. Immediately following the initial DOX/saline injection, animals were randomly housed in cages with voluntary running wheels or standard rat cages throughout DOX/saline treatments and continued until reaching 10 weeks. Cardiac function was then assessed using echocardiography and an isolated working heart model, and myosin heavy chain (MHC) isoform distribution was assessed using sodium dodecyl sulfate-polyacrylamide gel electrophoresis. When compared wth controls, daily DOX treatment resulted in reduced running wheel distances at weeks 2-10 (P < 0.05), and weekly DOX treatment resulted in reduced running wheel distances at weeks 2, 6 and 10 (P < 0.05). Nonetheless, wheel running during and following daily and weekly DOX dosing protected against DOX-induced cardiotoxicity by preserving maximal mitral and aortic blood flow velocities, left ventricular developed pressure and MHC isoform expression. In conclusion, the overall reduced volume of activity during and following daily and weekly DOX treatments attenuated DOX-induced cardiac dysfunction suggesting that low-volume endurance training may be an effective rehabilitative approach in minimizing DOX cardiotoxicity in cancer patients.

Exercise for the management of cancer-related fatigue in adults

BACKGROUND

Cancer-related fatigue is recognised as an important symptom associated with cancer and its treatment. A number of studies have investigated the effects of physical activity in reducing cancer-related fatigue. This is an updated version of the original Cochrane review published in The Cochrane Library (2008, Issue 1). The original review identified some benefits of physical activity on fatigue in cancer both during and after adjuvant treatment. We identified a number of limitations in the evidence, providing clear justification for an updated review.

OBJECTIVES

To evaluate the effect of exercise on cancer-related fatigue both during and after cancer treatment.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (Issue 1, 2011), MEDLINE (1966 to March 2011), EMBASE (1980 to March 2011), CINAHL (1982 to March 2011), British Nursing Index (January 1984 to March 2011), AMED (1985 to March 2011), SIGLE (1980 to March 2011) and Dissertation Abstracts International (1861 to March 2011) using key words. We also searched reference lists off all studies identified for inclusion and relevant reviews. In addition, we handsearched relevant journals and contacted experts in the field of cancer-related fatigue.

SELECTION CRITERIA

We sought and included randomised controlled trials (RCTs) that investigated the effect of exercise on cancer-related fatigue in adults.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed the risk of bias of studies and extracted data based upon predefined criteria. Where data were available we performed meta-analyses for fatigue using a random-effects model.

MAIN RESULTS

For this update we identified a total of 56 studies (4068 participants) for inclusion (28 from the original search and 28 from the updated search), with the majority carried out in participants with breast cancer (28 studies). A meta-analysis of all fatigue data, incorporating 38 comparisons, provided data for 1461 participants who received an exercise intervention and 1187 control participants. At the end of the intervention period exercise was seen to be statistically more effective than the control intervention (standardised mean difference (SMD) -0.27, 95% confidence interval (CI) -0.37 to -0.17). Benefits of exercise on fatigue were observed for interventions delivered during or post-adjuvant cancer therapy. In relation to diagnosis, we identified benefits of exercise on fatigue for breast and prostate cancer but not for those with haematological malignancies. Finally, aerobic exercise significantly reduced fatigue but resistance training and alternative forms of exercise failed to reach significance.

AUTHORS' CONCLUSIONS

The findings of the updated review have enabled a more precise conclusion to be made in that aerobic exercise can be regarded as beneficial for individuals with cancer-related fatigue during and post-cancer therapy, specifically those with solid tumours. Further research is required to determine the optimal type, intensity and timing of an exercise intervention.

Exercise interventions on health-related quality of life for cancer survivors

BACKGROUND

Cancer survivors experience numerous disease and treatment-related adverse outcomes and poorer health-related quality of life (HRQoL). Exercise interventions are hypothesized to alleviate these adverse outcomes. HRQoL and its domains are important measures for cancer survivorship.

OBJECTIVES

To evaluate the effectiveness of exercise on overall HRQoL and HRQoL domains among adult post-treatment cancer survivors.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, MEDLINE, EMBASE, CINAHL, PsycINFO, PEDRO, LILACS, SIGLE, SportDiscus, OTSeeker, and Sociological Abstracts from inception to October 2011 with no language or date restrictions. We also searched citations through Web of Science and Scopus, PubMed's related article feature, and several websites. We reviewed reference lists of included trials and other reviews in the field.

SELECTION CRITERIA

We included all randomized controlled trials (RCTs) and controlled clinical trials (CCTs) comparing exercise interventions with usual care or other nonexercise intervention to assess overall HRQoL or at least one HRQoL domain in adults. Included trials tested exercise interventions that were initiated after completion of active cancer treatment. We excluded trials including people who were terminally ill, or receiving hospice care, or both, and where the majority of trial participants were undergoing active treatment for either the primary or recurrent cancer.

DATA COLLECTION AND ANALYSIS

Five paired review authors independently extracted information on characteristics of included trials, data on effects of the intervention, and assessed risk of bias based on predefined criteria. Where possible, meta-analyses results were performed for HRQoL and HRQoL domains for the reported difference between baseline values and follow-up values using standardized mean differences (SMD) and a random-effects model by length of follow-up. We also reported the SMDs between mean follow-up values of exercise and control group. Because investigators used many different HRQoL and HRQoL domain instruments and often more than one for the same domain, we selected the more commonly used instrument to include in the SMD meta-analyses. We also report the mean difference for each type of instrument separately.

MAIN RESULTS

We included 40 trials with 3694 participants randomized to an exercise (n = 1927) or comparison (n = 1764) group. Cancer diagnoses in study participants included breast, colorectal, head and neck, lymphoma, and other. Thirty trials were conducted among participants who had completed active treatment for their primary or recurrent cancer and 10 trials included participants both during and post cancer treatment. Mode of the exercise intervention included strength training, resistance training, walking, cycling, yoga, Qigong, or Tai Chi. HRQoL and its domains were measured using a wide range of measures.The results suggested that exercise compared with control has a positive impact on HRQoL and certain HRQoL domains. Exercise resulted in improvement in: global HRQoL at 12 weeks' (SMD 0.48; 95% confidence interval (CI) 0.16 to 0.81) and 6 months' (0.46; 95% CI 0.09 to 0.84) follow-up, breast cancer concerns between 12 weeks' and 6 months' follow-up (SMD 0.99; 95% CI 0.41 to 1.57), body image/self-esteem when assessed using the Rosenberg Self-Esteem scale at 12 weeks (MD 4.50; 95% CI 3.40 to 5.60) and between 12 weeks' and 6 months' (mean difference (MD) 2.70; 95% CI 0.73 to 4.67) follow-up, emotional well-being at 12 weeks' follow-up (SMD 0.33; 95% CI 0.05 to 0.61), sexuality at 6 months' follow-up (SMD 0.40; 95% CI 0.11 to 0.68), sleep disturbance when comparing follow-up values by comparison group at 12 weeks' follow-up (SMD -0.46; 95% CI -0.72 to -0.20), and social functioning at 12 weeks' (SMD 0.45; 95% CI 0.02 to 0.87) and 6 months' (SMD 0.49; 95% CI 0.11 to 0.87) follow-up. Further, exercise interventions resulted in decreased anxiety at 12 weeks' follow-up (SMD -0.26; 95% CI -0.07 to -0.44), fatigue at 12 weeks' (SMD -0.82; 95% CI -1.50 to -0.14) and between 12 weeks' and 6 months' (SMD -0.42; 95% CI -0.02 to -0.83) follow-up, and pain at 12 weeks' follow-up (SMD -0.29; 95% CI -0.55 to -0.04) when comparing follow-up values by comparison group.Positive trends and impact of exercise intervention existed for depression and body image (when analyzing combined instruments); however, because few studies measured these outcomes the robustness of findings is uncertain.No conclusions can be drawn regarding the effects of exercise interventions on HRQoL domains of cognitive function, physical functioning, general health perspective, role function, and spirituality.Results of the review need to be interpreted cautiously owing to the risk of bias. All the trials reviewed were at high risk for performance bias. In addition, the majority of trials were at high risk for detection, attrition, and selection bias.

AUTHORS' CONCLUSIONS

This systematic review indicates that exercise may have beneficial effects on HRQoL and certain HRQoL domains including cancer-specific concerns (e.g. breast cancer), body image/self-esteem, emotional well-being, sexuality, sleep disturbance, social functioning, anxiety, fatigue, and pain at varying follow-up periods. The positive results must be interpreted cautiously due to the heterogeneity of exercise programs tested and measures used to assess HRQoL and HRQoL domains, and the risk of bias in many trials. Further research is required to investigate how to sustain positive effects of exercise over time and to determine essential attributes of exercise (mode, intensity, frequency, duration, timing) by cancer type and cancer treatment for optimal effects on HRQoL and its domains.

Fatigue and functional impairment in early-stage non-small cell lung cancer survivors

CONTEXT

Fatigue is the most common sequela among non-small cell lung cancer (NSCLC) survivors one to six years post-treatment and is associated with functional limitations.

OBJECTIVES

This study examined the prevalence, severity, and correlates of fatigue among early stage NSCLC survivors.

METHODS

Three-hundred fifty individuals diagnosed and surgically treated for Stage IA or IB NSCLC completed a survey that included the Brief Fatigue Inventory (BFI) to assess the prevalence and severity of fatigue. The Karnofsky Self-Reported Performance Rating scale (SR-KPS) was used as a measure of functional status and was compared with the severity of fatigue through Chi-squared analyses. Demographic, psychological, and medical correlates of fatigue were examined using logistic regression.

RESULTS

The prevalence of fatigue was 57%. Forty-one percent (n=142) of participants had mild fatigue and 16.8% (n=59) had moderate or severe fatigue (BFI≥4). Among the individuals reporting moderate or severe fatigue, 23.7% (n=14) had significant functional impairment (SR-KPS≤70%) compared with 2.8% (n=8) with mild or no fatigue (χ(2)=58.1, P<0.001). In the multivariate analysis, NSCLC survivors with pulmonary disease (odds ratio [OR]=2.28), depressive symptoms (OR=6.99), and anxiety symptoms (OR=2.31) were more likely to report experiencing clinically significant fatigue, whereas those who met physical activity guidelines (OR=0.29) reported less fatigue.

CONCLUSION

Fatigue is highly prevalent among NSCLC survivors and associated with more functional impairment. A comprehensive approach to the treatment of fatigue includes the screening and management of anxious and depressive symptoms, and pulmonary disorders such as chronic obstructive pulmonary disease.

A randomized controlled trial of home-based exercise for cancer-related fatigue in women during and after chemotherapy with or without radiation therapy

BACKGROUND

Few studies have evaluated an individualized home-based exercise prescription during and after cancer treatment.

OBJECTIVE

The purpose of this study was to evaluate the effectiveness of a home-based exercise training intervention, the Pro-self Fatigue Control Program on the management of cancer-related fatigue.

INTERVENTIONS/METHODS

Participants (N = 119) were randomized into 1 of 3 groups: group 1 received the exercise prescription throughout the study; group 2 received their exercise prescription after completing cancer treatment; and group 3 received usual care. Patients completed the Piper Fatigue Scale, General Sleep Disturbance Scale, Center for Epidemiological Studies-Depression Scale, and Worst Pain Intensity Scale.

RESULTS

All groups reported mild fatigue levels, sleep disturbance, and mild pain, but not depression. Using multilevel regression analysis, significant linear and quadratic trends were found for change in fatigue and pain (ie, scores increased, then decreased over time). No group differences were found in the changing scores over time. A significant quadratic effect for the trajectory of sleep disturbance was found, but no group differences were detected over time. No significant time or group effects were found for depression.

CONCLUSIONS

Our home-based exercise intervention had no effect on fatigue or related symptoms associated with cancer treatment. The optimal timing of exercise remains to be determined.

IMPLICATIONS FOR PRACTICE

Clinicians need to be aware that some physical activity is better than none, and there is no harm in exercise as tolerated during cancer treatment. Further analysis is needed to examine the adherence to exercise. More frequent assessments of fatigue, sleep disturbance, depression, and pain may capture the effect of exercise.

Three versus six months of exercise training in breast cancer survivors

Breast cancer is the most prevalent type of cancer in American women. Exercise appears to diminish many of the side effects resulting from breast cancer and its treatment. Very little research, however, has compared the outcomes of varying lengths of combined aerobic and resistance training exercise interventions on physiological and psychological parameters in breast cancer survivors. The purpose of this study was to compare the physiological and psychological outcomes following 3 and 6 months of exercise in breast cancer survivors. Breast cancer survivors (N = 114) participated in either 3 months of prescriptive, individualized exercise (3M; n = 29), 6 months of prescriptive, individualized exercise (6M; n = 68), or served as sedentary controls (C; n = 17). Cancer survivors completed a medical evaluation and assessment at baseline followed by a predetermined 3- or 6-month exercise intervention. Cancer survivors in the control group performed no exercise between the initial assessment and 6-month reassessment. Cardiovascular endurance, pulmonary function, muscular endurance, fatigue, and symptoms of depression were assessed at baseline and post intervention. Repeated measures ANCOVA revealed improvements (P < 0.05) in cardiovascular endurance, fatigue, and symptoms of depression in breast cancer survivors undergoing 3- and 6-month individualized exercise interventions. Breast cancer survivors exercising for 6 months showed additional improvements (P < 0.05) in pulmonary function and muscular endurance. Cancer survivors in the control group did not improve in cardiovascular endurance, pulmonary function, muscular endurance, or fatigue. Three months of individualized, prescriptive exercise leads to improved cardiovascular endurance, fatigue, and symptoms of depression in breast cancer survivors. Additional benefits are seen if exercise is continued for a total of 6 months.

Exercise for the management of side effects and quality of life among cancer survivors

Physical activity may play an important role in the rehabilitation of cancer survivors during and after treatment. Current research suggests that numerous beneficial outcomes are experienced in cancer survivors undergoing exercise interventions during or after cancer treatment. Exercise not only plays a role in managing side effects but also improves functional capacity and quality of life. The purpose of this article is to provide an overview of the oncology literature supporting the use of exercise as an effective intervention for improving cancer-related fatigue, other side effects, functional capacity, and quality of life among cancer survivors.

Cancer nutrition and rehabilitation-its time has come!

Cancer is a systemic disease that can affect nearly every organ in the body, resulting in a progressive loss of organ function. That loss of function may be initially slow, having minimal effect, or it may be rapid, resulting in more dramatic changes.

The usual medical management of patients with cancer has focused more specifically on the administration of cytotoxic treatments. These treatments can potentially eradicate or minimize the tumour, but they may also have toxic side effects that in turn can also affect the patient.

Cancer rehabilitation is a process that assists the individual with a cancer diagnosis to obtain optimal physical, social, psychological, and vocational functioning within the limits created by the disease and its treatment. The McGill Cancer Nutrition and Rehabilitation (cnr) program developed as a result of the ever-increasing demand for a focus on addressing individual cancer patients and their needs, as well as on achieving optimal tumour-related outcomes. Using an interdisciplinary approach, the cnr’s global objective is to empower individuals who are experiencing loss of function, fatigue, malnutrition, psychological distress, and other symptoms as a result of cancer or its treatment to improve their own quality of life. All team members—experts in their respective fields—assess all patients. At a subsequent team discussion and planning meeting, a specific 8-week program is designed for each patient. The hoped-for outcome for the cnr program is primarily to empower patients to “take control” or to enable them to improve their own quality of life. This article reviews the philosophy of the cnr’s approach and the roles played by the various members of the team.

A controlled randomized study examining the effects of exercise therapy on patients undergoing haematopoietic stem cell transplantation

A haematopoietic SCT (HSCT) can cause severe side effects, which may have a profound impact on a patient's life both physically and psychologically. Some studies have shown that physical activity has positive effects for inpatients after an HSCT. Therefore, the question arises whether a controlled exercise programme right from the beginning of the conditioning phase could help contribute to a patient's physical and psychological recovery. To evaluate the different effects of specific, moderate physical activities on the physical and psychological condition of HSCT patients we performed a controlled randomized study with 64 inpatients undergoing an allogeneic or autologous HSCT. The patients were randomly assigned to two groups. Although the training group took part in a specific programme of exercise therapy twice a day throughout the entire hospitalization phase, patients in the control group were offered the hospital's standard mobilization programme. The results of this study showed significant differences in favour of the training group regarding strength, endurance, lung function and quality of life. However, further studies are needed to confirm these results.

Considerations for Training Cancer Survivors

The incidence of cancer development has reached a plateau while cancer survival rates have been increasing. Therefore, more cancer survivors are living with the negative effects of cancer and cancer treatments. Exercise can play a significant role in combating the negative effects of cancer and cancer treatments and improving quality of life during and following clinical treatment for cancer. However, exercise interventions must be individualized to optimally meet the needs of cancer survivors. This article provides valuable information for certified personal trainers regarding the modification of exercise interventions to meet the specific needs of the ever increasing population of cancer survivors.

Effects of voluntary wheel running on goserelin acetate-induced bone degeneration

A common treatment option for many breast and prostate cancer patients is the use of a luteinizing hormone-releasing hormone agonist such as goserelin acetate (GA) which reduces sex hormone levels. This treatment, however, is associated with bone degeneration, and exercise has been suggested as a means of preventing this side effect. Little is known about the effects of low intensity, low volume exercise on GA-induced bone loss. The purpose of this study, therefore, was to investigate the effects of voluntary wheel running on bone architecture in growing male (M) and female (F) rats receiving GA treatment. Rats received an 8-week GA treatment or placebo (CON) and were either housed in cages equipped with voluntary running wheels (WR) or remained sedentary (SED) in standard cages throughout the experimental period. Following treatments, tibiae were excised and analyzed for cortical bone (cross-sectional volume, cortical volume, marrow volume, cortical thickness) and cancellous bone (bone volume/total volume, trabecular number, trabecular thickness, trabecular spacing) using micro-computed tomography. Treatment with GA resulted in a significant reduction in running wheel distances in both sexes throughout the study period (P<0.05). GA treatment had no effect on cortical bone architecture in neither sex (P>0.05). Cancellous bone degeneration, however, was observed in M and F SED+GA (P<0.05). No significant differences were observed in M WR+GA animals in bone volume/total volume, trabecular number and trabecular spacing when compared to M SED+CON (P>0.05). In F WR+GA, trabecular thickness did not differ from that of F SED+CON (P>0.05), and trabecular spacing was found to be significantly lower than F SED+GA (P<0.05). The current report indicates that 8 weeks of GA treatment promotes cancellous bone degeneration, and voluntary wheel running provides no clear osteoprotection in growing male and female rats.

Promoting a healthy lifestyle among cancer survivors

With improving longevity, the late-occurring adverse effects of cancer and its treatment are becoming increasingly apparent. As in other clinical populations, healthy lifestyle behaviors encompassing weight management, a healthy diet, regular exercise, and smoking cessation have the potential to reduce morbidity and mortality significantly in cancer survivors. This article addresses the strength of evidence for recommendations in areas of weight management, diet, exercise, and smoking cessation; and the current evidence examining the efficacy of various intervention approaches to promote health behavior changes among adult cancer survivors.

Effects of voluntary wheel running on cardiac function and myosin heavy chain in chemically gonadectomized rats

Reducing testosterone and estrogen levels with a luteinizing hormone-releasing hormone agonist such as Zoladex (i.e., chemical gonadectomy) is a common treatment for many prostate and breast cancer patients, respectively. There are reports of surgical gonadectomy inducing cardiac dysfunction, and exercise has been shown to be cardioprotective under these circumstances. Minimal research has been done investigating the effects of chemical gonadectomy and increased physical activity on cardiac function. The purpose of this investigation was to examine the effects of chemical gonadectomy and physical activity on cardiac function. Male (M) and female (F) Sprague-Dawley rats received either Zoladex treatment (Zol) that suppressed gonadal function for 8 wk or control implants (Con) and either were allowed unlimited access to voluntary running wheels (WR) or remained sedentary (Sed) throughout the treatment period. In vivo and ex vivo left ventricle (LV) function were then assessed, and myosin heavy chain (MHC) expression was analyzed to help explain LV functional differences. Hearts from M Sed+Zol exhibited significantly lower aortic blood flow velocity, developed pressure, and maximal rate of pressure development and higher beta-MHC expression than M Sed+Con. Hearts from F Sed+Zol exhibited significantly lower LV wall thicknesses, fractional shortening, and developed pressure and higher beta-MHC expression than F Sed+Con. This cardiac dysfunction was not evident in hearts from M or F WR+Zol, and this was associated with a preservation of the MHC isoform distribution. Thus an 8-wk chemical gonadectomy with Zoladex promoted cardiac dysfunction in male and female rats, and voluntary wheel running protected against this cardiac dysfunction.