The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors.
<h4>Objective</h4>To assess the relationship between time-of-day of exercise training and changes in relevant cancer health outcomes among cancer survivors.<h4>Methods</h4>Retrospective analysis of data collected from 2016-2019 from a hospital-based exercise oncology program....
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2021
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oai:doaj.org-article:71d84dd94a374ca98613c0b9dc0b7ada2021-12-02T20:17:01ZThe association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors.1932-620310.1371/journal.pone.0258135https://doaj.org/article/71d84dd94a374ca98613c0b9dc0b7ada2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258135https://doaj.org/toc/1932-6203<h4>Objective</h4>To assess the relationship between time-of-day of exercise training and changes in relevant cancer health outcomes among cancer survivors.<h4>Methods</h4>Retrospective analysis of data collected from 2016-2019 from a hospital-based exercise oncology program. Descriptive statistics were calculated for demographic, clinical, and exercise timing characteristics (e.g. AM, PM, or mix) among survivors with available data for exercise training time (n = 233). For the total sample and a breast cancer sub-analysis, univariate analysis of covariance, adjusted for age, was carried out by exercise training time, for change in the following outcomes collected during the program's assessment sessions: cardiorespiratory fitness and muscular endurance (human performance variables), physical function, anthropometrics, self-reported fatigue, and quality of life (QoL). Change in body mass index (BMI) and body weight was included in the breast cancer analysis.<h4>Results</h4>Overall, 37.3% of survivors habitually engaged in AM exercise (e.g. ≥ 75% AM training), 34.3% in PM exercise, and 28.3% in a mix of AM and PM exercise training throughout the program. Median time in the program was 17 weeks. Significant improvements in most human performance and physical function variables were observed in the total sample regardless of exercise training time-of-day. Among breast cancer survivors, PM but not AM or mixed was associated with improvements in fitness, and lower-body muscular endurance and function. Mixed exercise timing was linked with greater increase in waist circumference (total sample: 3.02cm, 95%CI 1.55, 4.49; breast cancer: 3.57cm 95%CI 0.96, 6.18), body weight (breast cancer: 1.6kg, 95%CI 0.3, 2.8) and BMI (breast cancer: 0.6kg/m2, 95%CI 0.1, 1.0). AM and PM exercise, but not mixed, was associated with improvements in fatigue and QoL.<h4>Conclusion</h4>Time-of-day of exercise training may differentially impact changes in human performance and physical function variables. Mixed exercise training time may result in less favorable outcomes related of weight management variables among cancer survivors.Adriana M ColettaMary C PlaydonKelly G BaronMei WeiKristen KelleyChristos VaklavasAnna BeckSaundra S BuysJonathan ChipmanCornelia M UlrichDarren WalkerShelley WhiteSonal OzaRebecca W ZinggPamela A HansenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0258135 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
Medicine R Science Q |
| spellingShingle |
Medicine R Science Q Adriana M Coletta Mary C Playdon Kelly G Baron Mei Wei Kristen Kelley Christos Vaklavas Anna Beck Saundra S Buys Jonathan Chipman Cornelia M Ulrich Darren Walker Shelley White Sonal Oza Rebecca W Zingg Pamela A Hansen The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| description |
<h4>Objective</h4>To assess the relationship between time-of-day of exercise training and changes in relevant cancer health outcomes among cancer survivors.<h4>Methods</h4>Retrospective analysis of data collected from 2016-2019 from a hospital-based exercise oncology program. Descriptive statistics were calculated for demographic, clinical, and exercise timing characteristics (e.g. AM, PM, or mix) among survivors with available data for exercise training time (n = 233). For the total sample and a breast cancer sub-analysis, univariate analysis of covariance, adjusted for age, was carried out by exercise training time, for change in the following outcomes collected during the program's assessment sessions: cardiorespiratory fitness and muscular endurance (human performance variables), physical function, anthropometrics, self-reported fatigue, and quality of life (QoL). Change in body mass index (BMI) and body weight was included in the breast cancer analysis.<h4>Results</h4>Overall, 37.3% of survivors habitually engaged in AM exercise (e.g. ≥ 75% AM training), 34.3% in PM exercise, and 28.3% in a mix of AM and PM exercise training throughout the program. Median time in the program was 17 weeks. Significant improvements in most human performance and physical function variables were observed in the total sample regardless of exercise training time-of-day. Among breast cancer survivors, PM but not AM or mixed was associated with improvements in fitness, and lower-body muscular endurance and function. Mixed exercise timing was linked with greater increase in waist circumference (total sample: 3.02cm, 95%CI 1.55, 4.49; breast cancer: 3.57cm 95%CI 0.96, 6.18), body weight (breast cancer: 1.6kg, 95%CI 0.3, 2.8) and BMI (breast cancer: 0.6kg/m2, 95%CI 0.1, 1.0). AM and PM exercise, but not mixed, was associated with improvements in fatigue and QoL.<h4>Conclusion</h4>Time-of-day of exercise training may differentially impact changes in human performance and physical function variables. Mixed exercise training time may result in less favorable outcomes related of weight management variables among cancer survivors. |
| format |
article |
| author |
Adriana M Coletta Mary C Playdon Kelly G Baron Mei Wei Kristen Kelley Christos Vaklavas Anna Beck Saundra S Buys Jonathan Chipman Cornelia M Ulrich Darren Walker Shelley White Sonal Oza Rebecca W Zingg Pamela A Hansen |
| author_facet |
Adriana M Coletta Mary C Playdon Kelly G Baron Mei Wei Kristen Kelley Christos Vaklavas Anna Beck Saundra S Buys Jonathan Chipman Cornelia M Ulrich Darren Walker Shelley White Sonal Oza Rebecca W Zingg Pamela A Hansen |
| author_sort |
Adriana M Coletta |
| title |
The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| title_short |
The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| title_full |
The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| title_fullStr |
The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| title_full_unstemmed |
The association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| title_sort |
association between time-of-day of habitual exercise training and changes in relevant cancer health outcomes among cancer survivors. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2021 |
| url |
https://doaj.org/article/71d84dd94a374ca98613c0b9dc0b7ada |
| work_keys_str_mv |
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