OBJECTIVE: The systematic review and meta-analysis in this study aimed to explore the effect of exercise intervention on health-related quality of life of colorectal cancer survivors.
METHODS: The current study followed guidelines outlined in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 (PRISMA 2020) to identify relevant literature. Comprehensive searches were conducted using EBSCOhost, Web of Science (WOS), Scopus, Science Direct, and PubMed. The inclusion criteria included are randomised control trials studies written in English, with no restrictions for the time of publication that reported the effects of exercise intervention on health-related quality of live among colorectal cancer survivors. Meta-analysis was conducted by pooling the mean and standard deviation of post-intervention scores across randomised control trial studies using a random effects model.
RESULT: A total of 467 articles were identified but only seven articles were randomised control trials (RCT) (n = 7) with PEDro scores ranging from 6 to 9 showing good internal validity were included in the review. The results of the meta-analysis of pooled data from six RCTs studies on HRQoL showed no significant effect of exercise intervention on HRQoL in the intervention group compared to control group [SMD = 0.25; 95% CI; -0.0, 0.51; Z = 1.88; p = 0.06; I2 = 30.8%].
CONCLUSION: This meta-analysis provides key insights into the effect of exercise on the health-related quality of life (HRQoL) of colorectal cancer (CRC) survivors. Therefore, more experimental studies should be carried out with rigorous methodology to evaluate the effectiveness of exercise interventions before it is recommended as a routine activity in post-treatment management for CRC survivors.
METHODS: This is a quasi-experimental study which was conducted at Hospital Canselor Tuanku Muhriz, Universiti Kebangsaan Malaysia (UKM), and Hospital Al-Sultan Abdullah, Universiti Teknologi MARA (UiTM), Malaysia. The intervention group performed Pilates exercises with a certified Pilates instructor for eight weeks via online streaming from the participants' homes. Meanwhile, the control group participants received the usual care as stipulated by their oncologists. The primary outcome was the quality of life. The secondary outcomes were functional capacity, cancer-related fatigue, depression and salivary cortisol. Data was collected at baseline and eight weeks after the exercise intervention. The effects of the intervention were analyzed using Repeated Measures Analysis of Covariance (ANCOVA) statistical test.
RESULT: Thirty-six (36) colorectal cancer survivors were allocated into either a Pilates exercise intervention group (N= 18) or a control group (N= 18). Over eight weeks, the Pilates exercise group revealed significant group x time interactions in terms of quality of life (p = 0.003), role functioning (p = 0.012), functional capacity (p = 0.048), and stool frequency (p = 0.021). However, only the stool frequency symptom (p = 0.008) remained significant after controlling for the confounders of age, gender and stage of cancer. No significant changes in cancer-related fatigue, depression and salivary cortisol levels between the groups were observed after the intervention.
CONCLUSION: Pilates exercise had positive impacts on role functioning, bowel function, and functional capacity among colorectal cancer survivors, ultimately contributing to an improvement in quality of life.