# Effects of a Short-Term Supervised Exercise Program in Women with Breast Cancer
Exercise additionally mitigates treatment-related side effects, such as diminished bone mineral density and sarcopenia, which may otherwise predispose individuals to fractures and other musculoskeletal conditions [21], being also associated with lower mortality [22]. In a study by [PERSON] et al. [23], a 10-week aerobic exercise program significantly improved health in breast cancer patients, reducing fatigue compared to the control group. Additionally, [PERSON] et al. [24] evaluated the efficacy of two different aerobic exercise regimens (fixed standard dosage and non-linear dosage) over 16 weeks, which were associated with modest improvements in cardiorespiratory fitness. Furthermore, [PERSON] et al. [25] combined resistance exercise, strength training, and dietary counseling over 12 weeks, observing improvements in quality of life and isometric strength, with these benefits maintained at 6 months follow-up. As aforementioned, numerous studies indicate that oncological patients can derive significant benefits from engaging in exercise. These benefits include a reduction in many of the negative consequences associated with cancer treatment, an enhancement in overall quality of life, and improvements in physical function, all while effectively mitigating fatigue [26]. Moreover, exercise has been linked to improved survival rates and a decreased risk of cancer recurrence [26; 27]. Notably, increases in physical activity times of physical activity both before and after diagnosis have been associated with better survival outcomes across at least 11 types of cancer, underscoring the importance of advocating for global exercise guidelines following cancer diagnosis [28]. The existing literature predominantly focuses on medium to long-term interventions, covering periods ranging from 3 months to 18 months. Despite this extensive coverage, our literature search has revealed a lack of short-term exercise programs (\(\leq\)6 weeks) [29], specifically tailored for cancer patients. Some of the benefits of short-term training would be to obtain improvements in physical condition without having many weeks of training in the case of having to undergo surgeries at short notice [30], improve glycemic control in patients with type 2 diabetes [31], or increase functional capacity, and decrease fatigue, anxiety, and depression in patients with multiple sclerosis, not improving their body mass index due to its short duration (4 weeks) [32]. On the other hand, studies have documented that as little as a single exercise session for 3 weeks can reduce anxiety-related symptoms in college students, making it more affordable for students compared to exercising for longer periods of time, especially during periods of high stress [33]. Moreover, a single or short-term exercise-induced protection can decrease the severity of myocardial injury caused by cardiac surgery or myocardial infarction, achieving immediate, clinically useful, and low-cost cardioprotection [34]. Therefore, although it has been widely demonstrated that long-term exercise causes very important physiological adaptations to reduce risk factors and improve health and physical condition, it has been shown that in certain cases it could be interesting to apply doses of exercise for a shorter time. Furthermore, there is a notable absence of interventions that integrate cardiorespiratory and strength exercises with stretching routines [35; 36; 37; 38; 39; 40; 41; 42]. Therefore, this study aims to fill these gaps by assessing the impact of a six-week exercise program comprising aerobic, strength, and stretching exercises on quality of life, fatigue, and functional capacity in cancer patients.