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Upper Limb Anaerobic Metabolism Capacity is Reduced in Mild and Moderate COPD Patients.
Iamonti, Vinicius C; Souza, Gerson F; Castro, Antonio A M; Porto, Elias F; Cruz, Lais G B; Colucci, Eduardo; Colucci, Marcelo; Sarmento, Antonio; Nascimento, Oliver A; Jardim, José R.
  • Iamonti VC; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Souza GF; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Castro AAM; Department of Physiotherapy, Universidade Federal do Rio Grande do Norte, Natal, Brazil.
  • Porto EF; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Cruz LGB; Department of Physiotherapy, Universidade Federal dos Pampas, Rio Grande do Sul, Brazil.
  • Colucci E; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Colucci M; Department of Physiotherapy, Centro Universitário Adventista de São Paulo, São Paulo, Brazil.
  • Sarmento A; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Nascimento OA; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
  • Jardim JR; Division of Pneumology - Pulmonary Rehabilitation Center, Universidade Federal de São Paulo, São Paulo, Brazil.
COPD ; 19(1): 265-273, 2022 05 20.
Article en En | MEDLINE | ID: mdl-35639442
ABSTRACT
Limited information is available regarding the role of anaerobic metabolism capacity on GOLD 1 and 2 COPD patients during upper limb exercise. We aimed to compare the upper limb anaerobic power capacity, blood lactate concentration, cardiovascular and respiratory responses, in male COPD patients versus healthy subjects during the 30-s Wingate anaerobic test (WAnT). The rate of fatigue and time constant of the power output decay (τ, tau) were also calculated and a regression analysis model was built to assess the predictors of τ in these patients. Twenty-four male COPD patients (post-bronchodilator FEV1 73.2 ± 15.3% of predicted) and 17 healthy subjects (FEV1 103.5 ± 10.1% of predicted) underwent the WAnT. Measurements were performed at rest, at the end of the WAnT, and during 3' and 5' of recovery time. Peak power (p = 0.04), low power (p = 0.002), and mean power output (p = 0.008) were significantly lower in COPD patients than in healthy subjects. Power output decreased exponentially in both groups, but at a significantly faster rate (p = 0.007) in COPD patients. The time constant of power decay was associated with resistance (in ohms) and fat-free mass (r2 = 0.604, adjusted r2 = 0.555, and p = 0.002). Blood lactate concentration was significantly higher in healthy subjects at the end of the test, as well as during 3' and 5' of recovery time (p < 0.01). Compared with healthy subjects, COPD patients with GOLD 1 and 2 presented lower upper limb anaerobic capacity and a faster rate of power output decrease during a maximal intensity exercise. Also, the WAnT proved to be a valid tool to measure the upper limb anaerobic capacity in these patients.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Enfermedad Pulmonar Obstructiva Crónica / Prueba de Esfuerzo Tipo de estudio: Prognostic_studies Límite: Humans / Male Idioma: En Año: 2022 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Enfermedad Pulmonar Obstructiva Crónica / Prueba de Esfuerzo Tipo de estudio: Prognostic_studies Límite: Humans / Male Idioma: En Año: 2022 Tipo del documento: Article