Age and androgen-deprivation therapy on exercise outcomes in men with prostate cancer

Springer Science and Business Media LLC - Tập 20 Số 5 - Trang 971-981 - 2012
Alberga, Angela S.1, Segal, Roanne J.2, Reid, Robert D.3, Scott, Chris G.2, Sigal, Ronald J.4, Khandwala, Farah4, Jaffey, James3, Wells, George A.3, Kenny, Glen P.1,5
1Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
2Department of Medicine, Division of Oncology, University of Ottawa Hospital, The Integrated Cancer Program, Ottawa, Canada
3Minto Prevention and Rehabilitation Centre, University of Ottawa Heart Institute, Ottawa, Canada
4Departments of Medicine, Cardiac Sciences and Community Health Sciences, Faculties of Medicine and Kinesiology, The University of Calgary, Calgary, Canada
5School of Human Kinetics, University of Ottawa, Ottawa, Canada

Tóm tắt

The purpose of this study is to examine the effects of age (≤65 years or >65 years) and androgen-deprivation therapy (ADT, presence or absence) as factors that may predict changes in body composition and fitness following a 24-week exercise program in prostate cancer patients. One hundred twenty-one men were randomly allocated to either: (1) aerobic exercise (AE), (2) resistance exercise (RE), or (3) usual care (UC). Body composition was assessed by DXA. Aerobic fitness was assessed through a maximal treadmill test. Muscular strength was assessed by leg extension and bench press using the eight-repetition maximum test. Responses were compared between younger (≤65 years) and older (>65 years) patients with or without ADT. There did not appear to be an interaction between age and ADT on body composition or fitness, nor were there any significant changes in body composition for participants ≤65 years. In participants aged >65 years, lean mass decreased in AE (p = 0.013) and UC (p = 0.006), but was preserved in RE. In participants receiving ADT, there was a decrease in lean mass in AE (p = 0.003) and UC (p < 0.001) but not in RE. The non-ADT group did not show any changes in body composition but did show improvements in muscular fitness following resistance training (p < 0.001). Changes in body composition and physical fitness following a 24-week exercise program in men with prostate cancer are not influenced by age and/or ADT. Resistance training appears to attenuate the age-related decrease in lean mass and increase in body fat in older patients with prostate cancer and those receiving ADT.

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