Neoplasms

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Acidophilus

Bifidobacterium

The subjects will receive 3 weekly sessions of combined exercise supervised by professionals in a specialized gym (60 minutes each one). The exercise will consist of a combination of aerobic and strength exercises involving the main muscle groups. They will take the probiotic supplementation at the established dose, 3 capsules/day before bedtime. Each probiotic capsule contains Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus acidophilus, Bifidobacterium bifidum.

Participants will follow their usual sedentary lifestyle (i.e to practice less than 3 days a week of physical exercise, as is specified in the inclusion criteria). They will take the probiotic supplementation at the established dose. Each probiotic capsule contains Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus acidophilus, Bifidobacterium bifidum

They will follow their sedentary lifestyle. Placebo probiotic will consist of a maltodextrin capsule.

The exercise intervention will last 12 weeks. It will include three weekly sessions of programmed physical exercise of \~ 60 min duration (aerobic and strength combined training). The exercise sessions will be individualized and will follow the rules of the world reference institutions for aerobic training. Each session will be held in a authorized fitness center and it will be supervised and individualized for each subject by expert professionals.The probiotic will be taken (3 capsules/day) for 12 weeks. Each probiotic capsule contains Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus acidophilus, Bifidobacterium bifidum.

Physical Exercise and probiotic group

Probiotic supplementation (3 capsules/day) will be taken before bedtime for 12 weeks.Each probiotic capsule contains Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus acidophilus, Bifidobacterium bifidum.

Probiotic group

Subjects will take 3 capsules/day of placebo capsules (maltodextrin) for 12 weeks

Placebo group

Fernando Herrero, PhD

Physical exercise along with gut microbiota improvement -because of probiotic intake- can improve the quality of life and immune system in breast cancer survivors. This is achieved because exercise improves the muscle mass in cancer patients (often reduced by treatment and/or inactivity), together with the gut microbiota improvement, this stimulates the inmune system function, improving the quality of life of these patients.

The aim of this study is to determine the effects of physical exercise together with the supplementation of a probiotic on gut microbiota balance, the gut immune system and quality of life (intended as functional and muscular capacity, physical qualities and emotional state) in breast cancer survivors .

A randomized controlled pilot study has been designed in three parallel groups. Breast cancer survivors will be randomly assigned to each of the 3 groups: a) probiotic supplementation + supervised combined physical exercise (PEF), b) probiotic supplementation and habitual sedentary lifestyle (P), and c) control group will follow their usual lifestyle and will receive a placebo (C).

The exercise intervention will last 12 weeks. It will include three weekly sessions of programmed physical exercise of \~ 60 min duration (combined training). The exercise program will be individualized and will follow the rules of the world reference institutions for aerobic training. Each session will be held in a qualified fitness center and it will be supervised and individualized for each subject by professional experts .The two supplemented groups will take 3 capsules (Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus acidophilus, Bifidobacterium bifidum) a day (at night before bedtime) for 12 weeks.

The variables gut microbiota, fecal levels of immunoglobulin A, cardiorespiratory capacity, anthropometry variables, lifestyle, muscular capacity, quality of life, anxiety, depression and stress levels will be analized at the beginning (baseline dose) and after 12 weeks of intervention.

The probiotic and the placebo will be encapsulated in identical capsules and in identical cans that will only be identified with the letters A and B

Synergic Effects of Physical Activity and Probiotic on Gut Immune System and Quality of Life of Breast Cancer Survivors.

Physical Activity Along With a Probiotic for the Immune System and Quality of Life Improvement in Breast Cancer Survivor: A Randomised Controlled Pilot Study

Breast cancer survivors quality of life will be analyzed with the quality of life questionnaire from The European Organization for Research and Treatment of Cancer EORTC QLQ BR-23 test (a specific module for breast cancer survivors)

Physical activity questionnaire (IPAQ) will be used

Stress coping questionnarie for oncology patients will be used

Microbial diversity, bifidobacteria and lactobacillus percentage

Spots Global Cancer Trial Database for breast cancer females