Immediate and 24-h blood pressure-lowering effects of arm crank exercise in patients with traumatic lower-limb amputation: a randomized cross-over study.

Abstract

AIM:

This study aimed to investigate the clinic and 24-h postexercise hypotension (PEH) after a moderate-intensity arm crank exercise session in individuals with traumatic lower-limb amputation.

PARTICIPANTS AND METHODS:

Nine men (46±17 years) with unilateral traumatic lower-limb amputation participated in two experimental sessions conducted randomly: an aerobic exercise (EXE: arm crank ergometer, 30 min) or a control session (CON: participants remained seated on the cycle ergometer, 30 min). Clinic and 24-h systolic, diastolic, and mean blood pressure (BP) response were measured after both sessions. The clinical measurements of blood flow and forearm vascular resistance (FVR) were also performed.

RESULTS:

Compared with the preintervention period, the BP levels did not change in the CON session. However, EXE resulted in a significant hypotensive effect in systolic (-10±0.9 mmHg, P≤0.05), diastolic (-11±1.5 mmHg, P≤0.05), and mean BP (-11±1.2 mmHg, P≤0.05) during the entire postexercise period. The PEH was accompanied by a decreased FVR over the entire postintervention period (P≤0.05). Significant reductions were found for 24-h average systolic, diastolic, and mean BP levels (P=0.03, 0.01, and 0.02, respectively) following EXE compared with the CON session.

CONCLUSION:

These results showed, for the first time, that individuals with traumatic lower-limb amputation presented immediate and 24-h PEH after a single bout of arm crank exercise testing. The PEH at the clinic condition was justified, at least in part, by the reduction in peripheral FVR.

• Authors: Marcelle Paula-Ribeiro, Daniel G Martinez, Jorge R P Lima, Mateus C Laterza
• Journal: Blood pressure monitoring (Blood Press Monit) Vol. 23 Issue 2 Pg. 64-70 (Apr 2018) ISSN: 1473-5725 [Electronic] England
• PMID: 29227294 (Publication Type: Journal Article, Randomized Controlled Trial)

Topics

• Adult
• Amputation, Traumatic (complications, physiopathology, therapy)
• Arm (physiopathology)
• Blood Pressure
• Cross-Over Studies
• Exercise
• Exercise Therapy
• Humans
• Hypertension (complications, physiopathology, therapy)
• Hypotension (etiology, physiopathology)
• Lower Extremity (injuries, physiopathology)
• Male
• Middle Aged
• Vascular Resistance