Navegando por Palavras-chave "Six minute walk test"

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    Are heart rate dynamics in the transition from rest to submaximal exercise related to maximal cardiorespiratory responses in COPD?
    (Associacao Brasileira Pesquisa Pos-Graduacao Fisioterapia-Abrapg-Ft, 2017) Mazzuco, Adriana; Medeiros, Wladimir Musetti [UNIFESP]; de Souza, Aline Soares [UNIFESP]; Noman Alencar, Maria Clara [UNIFESP]; Neder, Jose Alberto [UNIFESP]; Borghi-Silva, Audrey
    Background: Poor exercise capacity is an important negative prognostic marker in patients with chronic obstructive pulmonary disease (COPD). Heart rate variability (HRV) responses can indicate alterations in cardiac autonomic control. Nevertheless, it remains unclear whether these abnormalities are related to cardiorespiratory responses to exercise in these patients. Objective: To evaluate whether HRV at rest and submaximal exercise are related to impaired cardiopulmonary responses to exercise in COPD patients. Methods: Fifteen men (66.2 +/- 8.7 years) with COPD (FEV1: 55.1 +/- 19.2%) were assessed. The R-R interval (RRi) data collection was performed at rest (stand position) and during the six-minute walk test (6MWT). All patients performed a symptom-limited cardiopulmonary exercise test on a cycle ergometer. The HRV changes from rest to submaximal exercise (Delta rest-6MWT) were calculated. Results: We found significant correlations between low frequency (LF) and high frequency (HF) Delta rest-6MWT with Delta oxyhemoglobin saturation by pulse oximetry (r = -0.64 and r = 0.65, respectively
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    O teste de caminhada de seis minutos detecta mudanças na aptidão cardiorrespiratória de idosos saudáveis, após um programa de exercícios aeróbio, restrito e combinado?
    (Universidade Federal de São Paulo (UNIFESP), 2010-06-30) Santana, Marcos Gonçalves de [UNIFESP]; Mello, Marco Tulio de [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    The aim of this study was to determine whether the six-minute walk test (6-MWT) can detecting changes in cardiorespiratory fitness in healthy elderly men, after 24 weeks of aerobic, resistance and combined exercise. Forth three sedentary elderly men, aged 65-75 years, were allocated on four groups: aerobic group (AG, n = 10), resistance group (RG, n = 12), combined group - aerobic+resistance (ARG, n = 10) and control group (CG, n = 11). The intensity on AG was between 50 and 75% heart rate reserve, on RG between 50 and 80% of one maximum repetition and on ARG the sessions was intercalated with aerobic (AG) and resistance (RG) exercises. The training frequency was 3 times/week. Aerobic fitness was assessing using a cardiorespiratory exercise test (CRET) and the 6-MWT. In the pre-intervention, there was a moderate and significant correlation of 6-MWT distance with the V& O2peak (r = 0,51; p < 0,001), and with the V& O2 ventilatory threshold - V& O2 VT (r = 0,39; p = 0,010). The 6-MWT V& O2 correlated with the V& O2peak (r = 0,67; p < 0,001). The longitudinal analysis showed a significant improve on V& O2peak of AG (% = 15,0 ± 9,1%) and ARG (% = 12,6 ± 10,4%) compared with CG (% = -0,8 ± 8,5%; p < 0,001). In the 6-MWT, there was a significant increase in distance walked on AG (% = 5,5 ± 5,3%), RG (% = 2,7 ± 5,2%) and ARG (% = 4,6 ± 2,8%) compared to CG (% = -3,0 ± 5,9%; p < 0,001). However, longitudinal analysis showed no significant correlation between the changes (post - pre-intervention) of 6-MWT distance with the changes on V& O2peak (AG: r = 0,57; p = 0,08 e ARG: r = 0,18; p = 0,63), and with the changes on speed in the VT (AG: r = - 0,12; p = 0,738 e ARG: r = -0,25; p = 0,481). Thus, we can conclude that the 6-MWT is not appropriate to evaluate the changes in cardiorespiratory fitness of healthy elderly men, after 24 weeks of intervention with aerobic, resistance or combined exercise.