title: Upper limbs total occlusion pressure assessment: Doppler ultrasound reproducibility and determination of predictive variables.
abstract: Total occlusion pressure (TOP) is an important variable to ischaemic exercise training because the optimal pressure of flow restriction (OPR), applied during this exercise modality, is derived from it. Despite the common use of Doppler ultrasound (DU) to determine the TOP, the reproducibility of this assessment was not evaluated yet. Given this, the objective was to evaluate the reproducibility of DU for the measurement of TOP in upper limbs and determine the predictive variables. Thirteen male volunteers attended three times to the laboratory. On the 1st day, we assessed arm circumference (AC), systolic blood pressure (SBP) and diastolic (DBP), and brachial artery TOP. On 2nd and 3rd days, only TOP was assessed. We found a coefficient of variation of 5·6% and an intraclass correlation coefficient of 0·795 for the DU. In the analysis of TOP predictive variables, the Spearman coefficients (R) were 0·813 (SBP), 0·786 (DBP) and 0·388 (AC). Therefore, these results support that DU has good reproducibility for the TOP and that SBP and DBP should be considered to the determination of TOP in upper limbs.
authors.affiliation: Department of Physiotherapy, Federal University of Pernambuco, Recife, Brazil.
authors.forename: André T
authors.initials: AT
authors.lastname: Bezerra de Morais
authors.affiliation: Department of Physiotherapy, Federal University of Pernambuco, Recife, Brazil.
authors.forename: Mikhail
authors.identifier: http://orcid.org/0000-0001-5322-863X
authors.initials: M
authors.lastname: Santos Cerqueira
authors.affiliation: Department of Physiotherapy, Federal University of Pernambuco, Recife, Brazil.
authors.forename: Rafael
authors.initials: R
authors.lastname: Moreira Sales
authors.affiliation: Department of Physiotherapy, Federal University of Pernambuco, Recife, Brazil.
authors.forename: Taciano
authors.initials: T
authors.lastname: Rocha
authors.affiliation: Department of Physiotherapy, Federal University of Pernambuco, Recife, Brazil.
authors.forename: Alberto
authors.initials: A
authors.lastname: Galvão de Moura Filho
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D001794:Blood Pressure; D001916:Brachial Artery / Q000000981:diagnostic imaging* / Q000502:physiology; D003430:Cross-Sectional Studies; D006801:Humans; D007511:Ischemia; D008297:Male; D011237:Predictive Value of Tests; D012039:Regional Blood Flow; D015203:Reproducibility of Results; D014111:Tourniquets; D018608:Ultrasonography, Doppler; D034941:Upper Extremity / Q000098:blood supply*; D055815:Young Adult
keywords: agreement; blood flow restriction; blood pressure; optimal occlusion pressure; ultrasonography