Association of a Preoperative Leisure-Time Physical Activity With Short- and Long-term Outcomes of Patients Undergoing Curative Resection for Stage I to III Colorectal Cancer: A Propensity Score Matching Analysis

Post-diagnosis physical activity and sedentary behaviour and colorectal cancer prognosis: A Global Cancer Update Programme (CUP Global) systematic literature review and meta-analysis

Low physical activity and high sedentary behaviour have been clearly linked with colorectal cancer development, yet data on their potential role in colorectal cancer survival is limited. Better characterisation of these relationships is needed for the development of post-diagnosis physical activity and sedentary behaviour guidance for colorectal cancer survivors. We searched PubMed and Embase through 28 February 2022 for studies assessing post-diagnosis physical activity, and/or sedentary behaviour in relation to all-cause and cause-specific mortality and recurrence after colorectal cancer diagnosis. Total and recreational physical activity were assessed overall and by frequency, duration, intensity, and volume using categorical, linear, and non-linear dose-response random-effects meta-analyses. The Global Cancer Update Programme (CUP Global) independent Expert Committee on Cancer Survivorship and Expert Panel interpreted and graded the likelihood of causality. We identified 16 observational studies on 82,220 non-overlapping patients from six countries. Physical activity was consistently inversely associated with colorectal cancer morbidity and mortality outcomes, with 13%-60% estimated reductions in risk. Sedentary behaviour was positively associated with all-cause mortality. The evidence had methodological limitations including potential confounding, selection bias and reverse causation, coupled with a limited number of studies for most associations. The CUP Global Expert panel concluded limited-suggestive evidence for recreational physical activity with all-cause mortality and cancer recurrence. Total physical activity and its specific domains and dimensions, and sedentary behaviour were all graded as limited-no conclusion for all outcomes. Future research should focus on randomised trials, while observational studies should obtain objective and repeated physical activity measures and better adjustment for confounders.

Physical activity for cancer prehabilitation: A scoping review

This scoping review aims to synthesize the current landscape of physical activity in cancer prehabilitation and identify knowledge gaps. We searched MEDLINE, EMBASE, SCOPUS and WEB OF SCIENCE for exercise interventions and observational studies that measured exercise or physical activity before cancer treatment from inception to January 20, 2023. Fifty-one articles from 44 unique studies were reviewed, including 32 intervention and 12 observational studies. Surgery is the only treatment modality that has been investigated. Included studies used heterogeneous exercise interventions and measures for physical activity. Colorectal and other gastrointestinal, lung, and urologic cancers are the most studied cancer types. Exercise intervention in cancer prehabilitation is highly feasible. The evidence for improved fitness, functional, psychosocial, and clinical outcomes is promising yet limited. Although research has increased recently, prehabilitation exercise remains a relatively under-investigated area in oncology. We have provided research directions towards an ideal cancer prehabilitation design in the real-world setting.

Association of Preoperative Physical Activity with Short- and Long-Term Outcomes in Patients Undergoing Palliative Resection for Metastatic Colorectal Cancer: An Inverse Probability of Treatment Weighting Analysis

Simple Summary

Physical activity is linked to the risk and the prognosis of colorectal cancer. However, the impact of preoperative physical activity on postoperative short-term and long-term outcomes is limited. The aim of our study was to elucidate the relationship of preoperative physical activity and postoperative outcomes in metastatic colorectal cancer patients who underwent palliative resection. After the inverse probability of the treatment weighting process, the metabolic equivalent of task < 12 group had a higher postoperative morbidity rate and mortality rate. No significant difference was found in overall survival. In patients undergoing palliative resection for metastatic colorectal cancer, preoperative leisure-time physical activity with the metabolic equivalent of task ≥ 12 was associated with reduced short-term postoperative morbidity and mortality; however, no difference was detected in long-term survival.

Abstract

A lack of physical activity is a generally accepted risk factor for colorectal cancer. However, research on the effect of preoperative physical activity on postoperative and long-term outcomes is limited, especially in patients with stage IV colorectal cancer who underwent palliative surgery. Patients who underwent bowel resection for stage IV primary colorectal cancer between January 1995 and December 2016 were retrospectively enrolled. A total of 2185 patients were divided into two groups according to preoperative leisure-time weekly physical activity as assessed by metabolic equivalent of task (MET) values: MET < 12 (n = 1845) and MET ≥ 12 (n = 340). Inverse probability of treatment weighting (IPTW) was used to reduce imbalance and selection biases between the two groups. After the IPTW process, the MET < 12 group showed a higher postoperative morbidity rate (18.7% vs. 10.6%; p < 0.001) and mortality rate (2.4% vs. 0.6%; p < 0.001) than the MET ≥ 12 group. No significant difference was found in overall survival. Weekly preoperative leisure-time physical activity with MET ≥ 12 was associated with reduced short-term postoperative morbidity and mortality in patients undergoing palliative resection for metastatic colorectal cancer. However, no difference was detected in long-term survival.

Association between self-assessed preoperative level of physical activity and postoperative complications - An observational cohort analysis within a randomized controlled trial (PHYSSURG-C)

INTRODUCTION

Physical activity has been suggested as a modifiable risk factor for postoperative recovery after major surgery. We aimed to further define the association between self-reported leisure time physical activity and postoperative complications and recovery on a group level.

MATERIALS AND METHODS

An observational cohort analysis was performed within a randomized controlled trial. Patients ≥20 years with colorectal cancer were eligible. Between January 2015 and May 2020, 761 participants were recruited. Leisure time physical activity was self-assessed on a four-grade scale. The primary outcome in this analysis was postoperative complications within 90 days, measured with the comprehensive complication index (CCI). Secondary outcomes were CCI for the index hospital stay, CCI 30 days postoperatively, specific types of complications, length of hospital stay, and self-assessed physical recovery. Analyses were adjusted for gender, age, study center, alcohol consumption, tumor stage, colon/rectal cancer, neoadjuvant therapy, and open or laparoscopic surgery.

RESULTS

Data on preoperative physical activity was available for 614 participants. Participants who reported some physical activity had on average a lower CCI 90 days postoperatively than sedentary participants (odds ratio 0.63, 95% CI 0.43-0.92). Similar patterns were shown for complications during hospital stay and within 30 days. There were trends towards lower risk for several types of complications, reoperations and length of hospital stay but the only difference shown was for respiratory insufficiency.

CONCLUSION

Physically active participants experienced fewer postoperative complications, which suggests the information has a potential prognostic value. The work for increasing physical activity in the general population should continue.

The impact of obesity on postoperative outcomes in colorectal cancer patients: a retrospective database study

PURPOSE

Obesity is an independent risk factor for worse outcomes in various surgical settings. Whether obesity is a prognostic factor for postoperative morbidity and mortality of colorectal cancer (CRC) is inconclusive. This study aimed to determine the impact of obesity on short-term postoperative outcomes in CRC patients undergoing laparoscopic surgery.

METHODS

Data of a total of 23,898 CRC patients aged ≥ 20 years and undergoing laparoscopic resection were extracted from the US National Inpatient Sample (NIS) database and analyzed. The study endpoints were in-hospital mortality, any postoperative complications, infection/sepsis, acute kidney injury (AKI), deep vein thrombosis (DVT)/pulmonary embolisms (PE), and extended hospital stay. Univariate and multivariate logistic regression analyses were performed to examine the associations between patients' obesity status (morbid obese: BMI >  = 40 kg/m²; obese: BMI 30-39.9 kg/m²) and the study outcomes.

RESULTS

In 23,898 CRC patients undergoing laparoscopic resection, the prevalence of obesity prevalence was 11.8%. After adjustment, the results revealed that morbid obesity was significantly associated with increased risk for in-hospital mortality (aOR = 2.06, 95%CI: 1.11-3.83), AKI (aOR = 1.78, 95%CI = 1.34-2.36), DVT/PE (aOR = 2.88, 95%CI = 1.70-4.88), and extended LOS (aOR = 1.21, 95%CI = 1.02-1.43), while non-morbid obesity was significantly associated with more DVT/PE (aOR = 2.12, 95%CI = 1.32-3.41) as compared with non-obesity.

CONCLUSION

In patients with CRC undergoing laparoscopic surgery, morbid obesity is strongly associated with worse postoperative outcomes, including increased in-hospital mortality, postoperative AKI and DVT/PE, and extended LOS. The findings of the present study highlight the importance of obesity status in risk stratification for laparoscopic CRC surgery.