Cargando…
Once a Week Resistance Training Improves Muscular Strength in Breast Cancer Survivors: A Randomized Controlled Trial
Background: Exercise has been shown to reduce adverse outcomes related to breast cancer. However, the rate of adherence to physical exercise is very low among breast cancer survivors (BCS). This study investigated the effects of high supervision ratio resistance training (RT), once a week for 8 week...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6767726/ https://www.ncbi.nlm.nih.gov/pubmed/31561728 http://dx.doi.org/10.1177/1534735419879748 |
_version_ | 1783454981749211136 |
---|---|
author | dos Santos, Wanderson Divino Nilo Vieira, Amilton de Lira, Claudio Andre Barbosa Mota, João Felipe Gentil, Paulo de Freitas Junior, Ruffo Battaglini, Claudio Luiz Bottaro, Martim Vieira, Carlos Alexandre |
author_facet | dos Santos, Wanderson Divino Nilo Vieira, Amilton de Lira, Claudio Andre Barbosa Mota, João Felipe Gentil, Paulo de Freitas Junior, Ruffo Battaglini, Claudio Luiz Bottaro, Martim Vieira, Carlos Alexandre |
author_sort | dos Santos, Wanderson Divino Nilo |
collection | PubMed |
description | Background: Exercise has been shown to reduce adverse outcomes related to breast cancer. However, the rate of adherence to physical exercise is very low among breast cancer survivors (BCS). This study investigated the effects of high supervision ratio resistance training (RT), once a week for 8 weeks, on changes in body composition and muscular strength in BCS. Methods: Twenty-five female BCS undergoing hormone therapy were randomized into resistance training group (TG, n = 12) or control (CG, n = 13) group. The TG performed 8 weeks of supervised RT, with 1 trainer per volunteer, once a week. Body composition was evaluated by dual-energy X-ray absorptiometry, and muscle strength was evaluated by 10 repetition maximum (10 RM) for leg press (45°) and bench press exercises. A 1-way analysis of variance was used to compare within-group effects at pre- and post-intervention. An analysis of covariance test was used to compare post-intervention values, using pre-intervention measures as covariates. The effect size (ES) was calculated by Cohen’s d. Results: The TG improved muscle strength in 10 RM leg press (45°; Δ 33.75 ± 11.51 kg, P = .02; ES = 0.96) and bench press (Δ 4.08 ± 1.83 kg, P = .01; ES = 1.15). Adherence to training was more than 99%. Changes in body composition were not detected. There were no changes in the CG for any assessment. Conclusion: Once-weekly supervised RT could be an alternative to increase the adherence to exercise and improve muscular strength in BCS. |
format | Online Article Text |
id | pubmed-6767726 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-67677262019-10-18 Once a Week Resistance Training Improves Muscular Strength in Breast Cancer Survivors: A Randomized Controlled Trial dos Santos, Wanderson Divino Nilo Vieira, Amilton de Lira, Claudio Andre Barbosa Mota, João Felipe Gentil, Paulo de Freitas Junior, Ruffo Battaglini, Claudio Luiz Bottaro, Martim Vieira, Carlos Alexandre Integr Cancer Ther Original Article Background: Exercise has been shown to reduce adverse outcomes related to breast cancer. However, the rate of adherence to physical exercise is very low among breast cancer survivors (BCS). This study investigated the effects of high supervision ratio resistance training (RT), once a week for 8 weeks, on changes in body composition and muscular strength in BCS. Methods: Twenty-five female BCS undergoing hormone therapy were randomized into resistance training group (TG, n = 12) or control (CG, n = 13) group. The TG performed 8 weeks of supervised RT, with 1 trainer per volunteer, once a week. Body composition was evaluated by dual-energy X-ray absorptiometry, and muscle strength was evaluated by 10 repetition maximum (10 RM) for leg press (45°) and bench press exercises. A 1-way analysis of variance was used to compare within-group effects at pre- and post-intervention. An analysis of covariance test was used to compare post-intervention values, using pre-intervention measures as covariates. The effect size (ES) was calculated by Cohen’s d. Results: The TG improved muscle strength in 10 RM leg press (45°; Δ 33.75 ± 11.51 kg, P = .02; ES = 0.96) and bench press (Δ 4.08 ± 1.83 kg, P = .01; ES = 1.15). Adherence to training was more than 99%. Changes in body composition were not detected. There were no changes in the CG for any assessment. Conclusion: Once-weekly supervised RT could be an alternative to increase the adherence to exercise and improve muscular strength in BCS. SAGE Publications 2019-09-27 /pmc/articles/PMC6767726/ /pubmed/31561728 http://dx.doi.org/10.1177/1534735419879748 Text en © The Author(s) 2019 http://www.creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Original Article dos Santos, Wanderson Divino Nilo Vieira, Amilton de Lira, Claudio Andre Barbosa Mota, João Felipe Gentil, Paulo de Freitas Junior, Ruffo Battaglini, Claudio Luiz Bottaro, Martim Vieira, Carlos Alexandre Once a Week Resistance Training Improves Muscular Strength in Breast Cancer Survivors: A Randomized Controlled Trial |
title | Once a Week Resistance Training Improves Muscular Strength in Breast
Cancer Survivors: A Randomized Controlled Trial |
title_full | Once a Week Resistance Training Improves Muscular Strength in Breast
Cancer Survivors: A Randomized Controlled Trial |
title_fullStr | Once a Week Resistance Training Improves Muscular Strength in Breast
Cancer Survivors: A Randomized Controlled Trial |
title_full_unstemmed | Once a Week Resistance Training Improves Muscular Strength in Breast
Cancer Survivors: A Randomized Controlled Trial |
title_short | Once a Week Resistance Training Improves Muscular Strength in Breast
Cancer Survivors: A Randomized Controlled Trial |
title_sort | once a week resistance training improves muscular strength in breast
cancer survivors: a randomized controlled trial |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6767726/ https://www.ncbi.nlm.nih.gov/pubmed/31561728 http://dx.doi.org/10.1177/1534735419879748 |
work_keys_str_mv | AT dossantoswandersondivinonilo onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT vieiraamilton onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT deliraclaudioandrebarbosa onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT motajoaofelipe onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT gentilpaulo onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT defreitasjuniorruffo onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT battagliniclaudioluiz onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT bottaromartim onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial AT vieiracarlosalexandre onceaweekresistancetrainingimprovesmuscularstrengthinbreastcancersurvivorsarandomizedcontrolledtrial |