Influência do nível de atividade física sobre a aptidão cardiorrespiratória em mulheres idosas

Abstract

As age progresses, a decrease of daily activities and reduction of functionality where the cardiorespiratory capacity may be considered one of the most affected components, is faced. The aim of this study was to examine the association between level of physical activity and cardiorespiratory capacity in older women. Nine hundred and sixty women age above 60 years, non-institutionalized, divided in five age groups were evaluated: F1 (60-64 years; n = 286); F2 (65-69 years; n = 295); F3 (70-74 years; n = 207); F4 (75-79 years; n = 120) and F5 (> 80 years; n = 52). The level of physical activity was determined from the Modified Baecke Questionnaire for Older Adults, consisting of domestic, sports and recreational activities, in which the level of total physical activity was classified by the sum of these three components. The cardiorespiratory capacity was measured with the Six-Minute Gait Test. The cardiorespiratory capacity decreased an average of 24.5% and the level of physical activity 18.0% in this study. When examining the influences of the terciles of the level of physical activity concerning the cardiorespiratory capacity, the analysis of variance demonstrated that the superior tercile of the total physical activity level was the one which presented the lowest decrease in the cardiorespiratory capacity of 16.7%. However, the sports category of the physical activity level demonstrated differentiated values in the reduction of the cardiorespiratory capacity, where the non-practitioner of physical exercises sub-group presented the highest decrease of 18.6%, while the moderate practitioner sub-group decreased 16.3%, revealing hence the positive influence of moderate physical exercises practice over the cardiorespiratory capacity (p < 0.05). Higher physical activity, especially higher sports physical activity, may attenuate the decrease of cardiorespiratory capacity in older women, since women practitioners of moderate physical activities presented lower reduction of such capacity. Increase of physical activities is recommended, especially regular physical exercises, in order to attenuate the decrease of cardiorespiratory capacity, consequently aiding the maintenance of an independent life.

Effects of Aging and Exercise on the Cardiorespiratory Fitness of Older Women

“…3,11,13 The results of the present study indicate that elderly women who regularly practiced physical exercise suffered a lesser decline in CRF than their inactive peers. It was also observed that the CRF level of the active group during reassessment (480.8 m) was similar to that found in the inactive group during the first assessment (484.9 m), indicating that elderly persons who fulfilled PRE recommendations maintained levels of fitness of 5.8 years earlier than their inactive peers.…”

“…In contrast, a cross-sectional study by Krause et al 3 analyzed the decline in CRF of 960 elderly women, grouped into age groups with intervals of five years (60 to <80 years). CRF was evaluated by the six-minute walk test (6MWT).…”

Estudo comparativo da autonomia de ação de idosas praticantes e não praticantes de exercícios físicos regulares

“…Desse modo, seria razoável pensar que as idosas do GE teriam se beneficiado dos efeitos da prática regular de exercícios físicos (9,10,24) . Além disso, as idosas fisicamente ativas percorreram a distância com menor FC absoluta (GNE = 119 ± 17bpm vs. GE = 113 ± 22bpm) e menor percentual representativo da FCmáx (GNE = 77 ± 9,9bpm vs. GE = 74 ± 12,6bpm), apesar de diferenças significativas não terem sido constatadas para essas variáveis.…”

Aptidão cardiorrespiratória em idosas participantes de um centro de convivência na Cidade de Coari, Estado do Amazonas, Brasil

“…El sistema cardiorrespiratorio es uno de los más 12 afectados en los ancianos . Esto es también un reflejo de 9 la falta de actividad física .…”

“…Esto es también un reflejo de 9 la falta de actividad física . Con el aumento de la edad, hay una disminución en la captación y el transporte de oxígeno, generando un déficit en la demanda metabólica, influyendo negativamente sobre la resistencia 12 cardiorrespiratoria del anciano . Este sistema sufre varias alteraciones, de las cuales las más notorias son la disminución de la frecuencia cardiaca, el aumento del volumen diastólico final y el volumen sistólico para que haya manutención de débito cardíaco, aumento de la 8 presión arterial sistólica y diastólica .…”