Effects of Different Volumes of Combined Training in Breast Cancer Survivors: A Pilot Study

Pinto, Stéphanie Santana; Portella, Elisa Gouvêa; Alberton, Cristine Lima; Pinheiro, R.M.; David, Gabriela Barreto; López, Pedro; Brizio, Maria Laura Resem; Schaun, Gustavo Zaccaria; Umpierre, Daniel

doi:10.1249/01.mss.0000561779.97589.5b

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“…Previously published data from maximal dynamic knee extension strength (effect size f = 0.31) and cancerrelated fatigue (effect size f = 0.74) data were utilized. 28 As a result, it was determined that a sample size of 12 and 8 participants in each group (SS and MS) were required for the maximal knee extension dynamic strength and cancer-related fatigue outcomes, respectively. However, due to the COVID-19 pandemic, we could not achieve the estimated sample number (26 participants for knee extension dynamic strength).…”

Section: Discussionmentioning

confidence: 99%

Impact of Resistance Training Volume on Physical and Perceptual Outcomes of Breast Cancer Survivors Submitted to a Combined Training Program: A Randomized, Single-Blinded Study

Calonego

Alberton

Santagnello

et al. 2023

Journal of Physical Activity and Health

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Background: To determine the effect of resistance training volume on physical and perceptual outcomes of breast cancer survivors submitted to a combined training program. Design: Randomized single-blinded study. Methods: Nineteen breast cancer survivor women were randomized to a single-set (SS) or a multiple-set (MS) group. Both groups completed an 8-week combined training intervention in which the SS and MS groups performed 1 and 3 sets per resistance exercise, respectively. The following outcomes were assessed preintervention and postintervention: maximal knee extension dynamic strength (1-repetition maximum), quadriceps muscle thickness, peak oxygen uptake, time to exhaustion, cancer-related fatigue, and quality of life. Results: Both interventions increased knee extension 1-repetition maximum (SS: 29.8% [37.5%]; MS: 19.3% [11.8%]), quadriceps muscle thickness (9.4% [4.1%]; 8.9% [5.9%]), and quality of life (4.3% [6.3%]; 7.9% [9.0%]), with no difference between the groups. However, only MS improved cancer-related fatigue (−2.1% [1.7%]) and time to exhaustion (21.3% [14.9%]), whereas peak oxygen uptake remained unchanged in both groups. Conclusions: Cancer-related fatigue and time to exhaustion, improved only in the MS group after the intervention. On the other hand, similar knee extension 1-repetition maximum, quadriceps muscle thickness, and quality of life improvements were observed in breast cancer survivors irrespective of the resistance training volume performed.

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Section: Discussionmentioning

confidence: 99%