Limb occlusion pressure for blood flow restricted exercise: Variability and relations with participant characteristics.
Phys Ther Sport
; 47: 78-84, 2021 Jan.
Article
em En
| MEDLINE
| ID: mdl-33197877
ABSTRACT
OBJECTIVE:
Assess lower-extremity blood flow restricted exercise (BFR) limb occlusion pressure (LOP) variability and identify related intrinsic characteristics using a portable Delphi BFR system.DESIGN:
Repeated measures.SETTING:
Laboratory.PARTICIPANTS:
Forty-two healthy males (n = 25) and females (n = 17) (25.8 ± 5.2 y, 1.76 ±0 .09 m, 78.9 ± 14.9 kg) completed two visits. Brachial artery blood pressure, thigh circumferences (TC), and LOP were measured supine. MAIN OUTCOMEMEASURES:
Linear mixed-effects models (LMM) and generalizability theory were used to evaluate LOP between legs and days, determine intrinsic characteristic relations, and assess random variance components.RESULTS:
LOP was not different between legs (p = .730) or days (p = .916; grand mean = 183.7 mmHg [178.4, 189.1]). LOP varied significantly between participants (p = .011, standard error = 47.3 mmHg). 47% of LOP variance was between participants, 18% and 6% was within participants between days and legs, respectively, and 28% was associated with random error. The relative error variance was 14.4 mmHg. Pulse pressure (PP) (p = .005) and TC (p = .040) were positively associated with LOP. A LMM including PP and TC predicted LOP with a mean absolute difference of 11.1 mmHg [9.7, 12.6] compared to measured LOP.CONCLUSIONS:
The relative error variance suggests that clinicians should measure LOP consistently for each patient to ensure BFR safety and effectiveness.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fluxo Sanguíneo Regional
/
Pressão Sanguínea
/
Treinamento Resistido
/
Perna (Membro)
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article