Background: Sedentary lifestyle is considered just a lack of physical activity, however, it is one of the great villains of global public health, causing many diseases such as
obesity, cardiorespiratory diseases, some types of cancers, diabetes, muscular atrophies among others.
The obesity as a technology evil is also associated with numerous health problems such as heart attack, diabetes and cancers due to the large accumulation of fat in the arteries, especially the
coronary arteries. With diseases (obesity, type 2 diabetes, high blood pressure, cholesterol) is the loss of muscle mass in three different levels: cachexia, atrophy by inactivity and sarcopenia.
Muscle mass is the key to the movement, as we age, there are significant changes in both muscle mass and in our quality of life. After 50 years of age muscle mass decreases by about two percent
annually and 50 to 60 years to a decline of 1.5% annual power, after 60 years this decline goes to 3% per year.
The water aerobics training is used as an intervention for the prevention and treatment of muscle strength loss, since many studies claim that exercises with weight resistance improves muscle
strength, muscle power and body composition in relation to reduction of fat.
Methods: The first sample, diagnostic evaluation, consisted of 325 participants of both genders, but we used for this study only 203 participants, because only these were evaluated in
two moments, belonging to the water aerobics group of the leisure department, in the Secretary of Sports of Indaiatuba-SP. Participants practiced water aerobics exercises twice a week, lasting an hour
each class, for a total of two hours a week. Students were told that the assessments would be conducted in two periods of the year, featuring pre moment and the evaluation of the post. The sample that
participated in both assessments (pre and post) was composed of 203 participants age 70.2 ± 6.2 (years): height 156.8 ± 7.9 (cm): Body weight 69.7 ± 13, 6 (kg): body mass index BMI 28.2 ± 4.6:
Flexibility of 15.5 ± 10.3 cm: TUG and 6.59 ± 6.59 seconds. The evaluations were conducted in an eight-month-time interval between the pre-activity (PREA) and practiced post-activity (POSA).
Results: The sample consisted of 203 participants of both sexes, aged 70.23 ± 6.23, height 156.86 ± 7.93, 69.73 ± presented MCT 13.66 to 69.12 ± 13, 34, BMI 28.26 ± 4.67 to 27.86 ±
4.47, 96.04 ± 10.99 CC for 93.59 ± 10.87, TUG test 6.59 ± 2.58 to 5, 38 ± 2.10 and 15.56 ± 10.36 Test Wells to 19.03 ± 9.57.
Conclusions: The variables shown in this study conclude that water aerobics, applied twice a week, for seniors, for eight months, did not positively influence in significant changes
in the MCT and BMI. For DC variables, TUG and Test Wells, the changes were positive, so we can say that the activity of water aerobics proposal helps improve the waist circumference, functional
mobility and flexibility of the participants.
The authors suggest that further studies need to be developed, taking into account the load and control of intensity of the exercise performed in the water.