Body Composition – During and Post
A small reduction was observed in body weight in 1 meta-analysis in which both aerobic and resistance exercise was included (16 RCTs). A slight reduction in body fat percentage was seen in the same meta-analyses for breast cancer (10 RCTs). This study only looked at post treatment. A further systematic review looked at 15 RCTs – 6 studies looked at patients undergoing active treatment and 9 studies post treatment. A small improvement in body composition was observed for resistance exercise interventions.
Quality of evidence
Grade B – Moderate Quality – A number of RCTs have been conducted on this topic, however there is a variety of interventions that have been used. There is a significant correlation however demonstrated in patients showing an improvement in body weight for all cancer types, and a slight reduction which is seen in patients with breast cancer for body fat percentage. When grouped together there is also moderate evidence with a small improvement seen specifically for resistance exercise interventions.
Strength of recommendation
Weak – Grade 2 – Heterogenous study designs presented. There is a need for more robust RCTs with specific interventions studied. There will be however an overall benefit of physical activity and any further studies are likely to be prove this.
Physical activity appears to have an overall benefit in body composition. The evidence suggests that this predominantly in patients who undergo resistance-based exercises both during and post treatment in its analysis.
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