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This work is supported by the Spanish Ministry of Education, Culture and Sport (contract number FPU14/03435 to JSM); University of Alcala (contract number FPI2016 to PLV); Universidad Europea de Madrid [2015/UEM05, 2017/UEM14 and 2018/UEM02 and UEM2020/36]; and the Spanish Ministry of Economy and Competitiveness (Fondo de Investigaciones Sanitarias and Fondos FEDER [grant numbers PI15/00558 and PI18/00139 to AL] and Miguel Servet research contract [ref. #CP18/00034 to CFL]).

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Concurrent Exercise Interventions in Breast Cancer Survivors with Cancer-related Fatigue

Publicado en:International Journal Of Sports Medicine. 41 (11): 790-797 - 2020-01-01 41(11), DOI: 10.1055/a-1147-1513

Autores: Pagola, Itiziar; Morales, Javier S; Alejo, Lidia B; Barcelo, Olga; Montil, Marta; Olivan, Jesus; Alvarez-Bustos, Alejandro; Cantos, Blanca; Maximiano, Constanza; Hidalgo, Francisco; Valenzuela, Pedro L; Fiuza-Luces, Carmen; Lucia, Alejandro; Ruiz-Casado, Ana

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Resumen

This study compared the effects of two supervised concurrent training interventions in breast cancer survivors with cancer-related fatigue at baseline. Twenty-three female breast cancer survivors (50 +/- 8 years) were randomized to a high- (n=13) or a moderate-intensity (n=10) training program. Both interventions lasted 16 weeks and included the same resistance exercises, but the aerobic component was supervised and more intense in the former (i.e., rating of perceived exertion of 7-8 vs. 6 on a 1-10 scale for the high and moderate-intensity intervention, respectively). The primary endpoint was fatigue perception. Endpoints were assessed at baseline and after 16 weeks. The p-value for statistical significance was set at 0.004 after Bonferroni correction for multiple comparisons. The high-intensity training program increased lower-limb muscle strength significantly (p=0.002) and tended to improve fatigue perception (p=0.006), waist circumference (p=0.013), neutrophil-to-lymphocyte ratio (p=0.028) and some quality of life items (p=0.011). Although the moderate-intensity training program did not provide such benefits in general (i.e., higher p-values for pre vs post-intervention comparisons), no significant differences were found between interventions (all p>0.004). Further research is needed to elucidate if the benefits provided by high-intensity concurrent training are superior to those elicited by moderate-intensity training in breast cancer survivors.

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