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Respuesta ventilatoria al ejercicio post-entrenamiento de miembros superiores en la enfermedad pulmonar obstructiva cronica (Ventilatory response to upper limb exercise alter training in COPD) [Spanish]
Sivori M, Rhodius E
Medicina 2013;73(1):1-8
clinical trial
3/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

There are scarce studies evaluating the modification of ventilatory response to upper limb exercise (ULE) post-training in COPD patients. A prospective, randomized, controlled study was performed comparing two groups: training lower limbs (LL), versus LL plus upper limb training (UL), in relation to their pre and post-training ventilatory response to ULE. A total of 43 COPD patients were included; 84% male, 6 (14%) GOLD moderate stage (II), 15 (35%) severe stage (III), and 22 (51%) very severe (IV); 28 patients completed the study. After ULE, in UL group (n = 14) a training increased isotime VT (p < 0.0001) was observed, as well as an increase in the inspiratory capacity isotime percentage (IC, 8.8%, p = 0.001), in the Ti isotime (29.3%, p = 0.022) and in the Ti/Tot isotime (37.4%, p = 0.0004). Also, Te isotime was reduced (26%, p = 0.009) and IC isotime was increased (p = 0.01) after ULE. In LL group (n = 14), training increased VT/Ti isotime (66.86%, p = 0.0005) after ULE. Also, after ULE a decrease in Ti isotime (27.9%, p = 0.015) and in Ti/Tot isotime (22.74%, p = 0.00016) were observed. A moderate correlation was observed between respiratory rate and IC after ULE, only for post-training in UL group (r = -0.53, p < 0.001). Comparing both groups in relation to their responses to ULE, only in the UL group was a reduction observed in Te isotime (p = 0.049) and VT/Ti (p = 0.0015), higher Ti isotime (p = 0.0019), Ti/tot isotime (p = 0.000076) and IC isotime (% predictive, p = 0.01). UL training modified ventilatory response to ULE and it also reduced air trapping in COPD patients.

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