Treadmill walking with load carriage increases aortic pressure wave reflection

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Fernando Ribeiro (Autor) Outra; Norton L Oliveira (Autor) Outra; Joana Pires (Autor) Outra; Alberto J Alves (Autor) Outra; José Oliveira (Autor) FADEUP

Revista

Título: Boletim da Sociedade Portuguesa de Cardiologia

Vol. 33

Páginas: 425-430

ISSN: 0304-4750

Editora: Sociedade Portuguesa De Cardiologia

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Medicina clínica

Outras Informações

ID Authenticus: P-009-XKX

DOI: 10.1016/j.repc.2013.11.012

Abstract (EN): Introduction and objectives: The study examined the effects of treadmill walking with load carriage on derived measures of central pressure and augmentation index in young healthy subjects. Methodology: Fourteen male subjects (age 31.0 +/- 1.0 years) volunteered in this study. Subjects walked 10 minutes on a treadmill at a speed of 5 km/h carrying no load during one session and a load of 10% of their body weight on both upper limbs in two water carboys with handle during the other session. Pulse wave analysis was performed at rest and immediately after exercise in the radial artery of the right upper limb by applanation tonometry. Results: The main result indicates that walking with load carriage sharply increased augmentation index at 75 bpm (-5.5 +/- 2.2 to -1.4 +/- 2.2% vs. -5.2 +/- 2.8 to -5.5 +/- 2.1%, p<0.05), and also induced twice as high increments in central pulse pressure (7.4 +/- 1.5 vs. 3.1 +/- 1.4 mmHg, p<0.05) and peripheral (20.5 +/- 2.7 vs. 10.3 +/- 2.5 mmHg, p<0.05) and central systolic pressure (14.7 +/- 2.1 vs. 7.4 +/- 2.0 mmHg, p<0.05). Conclusions: Walking with additional load of 10% of their body weight (aerobic exercise accompanied by upper limb isometric contraction) increases derived measures of central pressure and augmentation index, an index of wave reflection and arterial stiffness.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6