RESUMO
PURPOSE: To investigate the connection between the clinical severity of chronic venous insufficiency (CVI) and the biomechanics of the calf muscle pump (CMP). MATERIAL AND METHODS: Through a cross-sectional observational study, we analyzed women on the age range between 30 and 80 years with chronic venous insufficiency, stratified according to the clinical classification. Ninety-nine women were assessed and classified into groups with different levels of severity: C1 (n = 22); C2 (n = 22); C3 (n = 22); C4 (n = 22); C5 (n = 8); C6 (n = 3). The main purpose was to investigate the strength of the calf muscle pump through total work (TW) and peak torque (PT), and the range of motion (ROM) of the ankle joint. For a secondary analysis, the fatigue index was assessed. All results were run through the Humac®/NORMT isokinetic dynamometer to obtain the data. RESULTS: Our findings pointed out that as the clinical severity of CVI increases, there is a reduction on the PT, the TW, the maximum active ROM and the ROM at 120°/sec. As severity increased, there was a reduction of 24Nm in the TW at 30°/sec.and a reduction of 3Nm in the PT at 30°/sec. OUTCOMES: When increased, clinical severity of CVI may trigger downgrading in the strength of the CMP and the ROM in the ankle. These findings are of relevance to the clinician, since through these findings, individuals with venous insufficiency may be treated more precisely for each classification.
Assuntos
Insuficiência Venosa , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Insuficiência Venosa/complicações , Insuficiência Venosa/terapia , Articulação do Tornozelo , Amplitude de Movimento Articular/fisiologia , MúsculosRESUMO
Background Physical fitness is an important determinant of quality of life (QoL) in heart failure with preserved ejection fraction (HFpEF) patients. However, how the different physical fitness components correlate with the specific dimensions of QoL in HFpEF patients remains unknown. Objective To evaluate the association between different physical fitness components and QoL dimensions in HFpEF patients, and, assess which physical fitness components were independently associated to QoL. Methods Patients with HFpEF were assessed for physical fitness [dynamic balance and mobility (8-foot-up-and go test), upper body strength (handgrip), cardiorespiratory fitness (CRF) (6-minute-walking test) and body composition (body mass index)] and for QoL (Minnesota Living With Heart Failure Questionnaire). Partial correlation was used to verify the association between physical fitness components and QoL dimensions. The determination of independent predictors in QoL dimensions was assessed through stepwise multivariate linear regression analysis. Statistical significance was set at p<0.05. Results Both CRF and dynamic balance and mobility are significantly associated with the total score and physical dimensions of QoL (p<0.05), but only dynamic balance and mobility were concomitantly associated with the emotional dimension (r=0.597; p=0.004). Dynamic balance and mobility were independently associated with total score (ß=0.651; r2=0.424; p=0.001), physical (ß=0.570; r2=0.324; p=0.04) and emotional (ß=0.611; r2=0.373 p=0.002) dimensions of QoL. Conclusion Our data suggests that dynamic balance and mobility better assess QoL than CRF, which is commonly measured in clinical practice. Whether interventions specifically targeting dynamic balance and mobility have different impacts on QoL remains unknown. (Arq Bras Cardiol. 2020; 114(4):701-707).
Assuntos
Insuficiência Cardíaca , Qualidade de Vida , Força da Mão , Humanos , Aptidão Física , Volume SistólicoRESUMO
Resumo Fundamento A aptidão física é um importante determinante da qualidade de vida (QV) em pacientes com insuficiência cardíaca com fração de ejeção preservada (ICFEP). No entanto, ainda não se sabe como os diferentes componentes da aptidão física se relacionam com as dimensões específicas da QV em pacientes com ICFEP. Objetivo Avaliar a associação entre diferentes componentes da aptidão física e dimensões da QV em pacientes com ICFEP, e examinar quais componentes da aptidão física foram independentemente associados à QV. Métodos Os pacientes com ICFEP foram avaliados quanto à aptidão física [equilíbrio dinâmico e mobilidade ("teste 8-feet Up-and-go "), força da parte superior do corpo (Teste de força de preensão manual), aptidão cardiorrespiratória (ACR) (teste de caminhada de 6 minutos) e composição corporal (índice de massa corporal)] e para QV ( Minnesota Living With Heart Failure Questionnaire ). Uma correlação parcial foi utilizada para verificar a associação entre os componentes da aptidão física e as dimensões da QV. A análise das dimensões dos preditores independentes de QV foi realizada através da análise de regressão linear multivariada stepwise . A significância estatística foi estabelecida em p <0,05. Resultados Tanto a ACR quanto o equilíbrio dinâmico e a mobilidade estão significativamente associados ao escore total e às dimensões físicas da QV (p <0,05), mas apenas o equilíbrio dinâmico e a mobilidade foram concomitantemente associados à dimensão emocional (r = 0,597; p = 0,004). O equilíbrio dinâmico e a mobilidade foram associados de forma independente ao escore total (β = 0,651; r2 = 0,424; p = 0,001), e as dimensões física (β = 0,570; r2 = 0,324; p = 0,04) e emocional (β = 0,611; r2 = 0,337 p = 0,002) da QV. Conclusão Nossos dados sugerem que o equilíbrio dinâmico e a mobilidade avaliam melhor a QV do que a ACR, comumente medida na prática clínica. Ainda não se sabe se as intervenções direcionadas especificamente ao equilíbrio dinâmico e à mobilidade têm diferentes impactos na QV. (Arq Bras Cardiol. 2020; 114(4):701-707)
Abstract Background Physical fitness is an important determinant of quality of life (QoL) in heart failure with preserved ejection fraction (HFpEF) patients. However, how the different physical fitness components correlate with the specific dimensions of QoL in HFpEF patients remains unknown. Objective To evaluate the association between different physical fitness components and QoL dimensions in HFpEF patients, and, assess which physical fitness components were independently associated to QoL. Methods Patients with HFpEF were assessed for physical fitness [dynamic balance and mobility (8-foot-up-and go test), upper body strength (handgrip), cardiorespiratory fitness (CRF) (6-minute-walking test) and body composition (body mass index)] and for QoL (Minnesota Living With Heart Failure Questionnaire). Partial correlation was used to verify the association between physical fitness components and QoL dimensions. The determination of independent predictors in QoL dimensions was assessed through stepwise multivariate linear regression analysis. Statistical significance was set at p<0.05. Results Both CRF and dynamic balance and mobility are significantly associated with the total score and physical dimensions of QoL (p<0.05), but only dynamic balance and mobility were concomitantly associated with the emotional dimension (r=0.597; p=0.004). Dynamic balance and mobility were independently associated with total score (β=0.651; r2=0.424; p=0.001), physical (β=0.570; r2=0.324; p=0.04) and emotional (β=0.611; r2=0.373 p=0.002) dimensions of QoL. Conclusion Our data suggests that dynamic balance and mobility better assess QoL than CRF, which is commonly measured in clinical practice. Whether interventions specifically targeting dynamic balance and mobility have different impacts on QoL remains unknown. (Arq Bras Cardiol. 2020; 114(4):701-707)