Impact of physical exercise in advanced-stage cancer patients: Systematic review and meta-analysis.

13 , 58 , 60 , 61 Interestingly, 4 of the 13 studies related to this type of training did not report significant differences for fatigue, a finding that, to a large extent, is due to the heterogeneity of the cancers presented by the sample and the nonpersonalization of training by type of cancer; however, some studies do report a positive trend for this variable. 21 , 28 , 45 , 62 Regarding strength training, the principles of hypertrophy are introduced with loads approximately 70% of the 1RM, with 2–3 sets and 8–15 repetitions in each set; this training method is the most used in the literature for muscle mass gain. 5

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