TY - JOUR 
A1 - Aznar Laín, Susana
AU - Webster, A. L.
AU - Cañete, Silvia
AU - San Juan, Alejandro F.
AU - López Mojares, Luis Miguel
AU - Pérez Ruiz, Margarita
AU - Lucía Mulas, Alejandro
AU - Chicharro García, Luis Miguel
T1 - Effects of inspiratory muscle training on exercise capacity and spontaneous physical activity in elderly subjects: a randomized controlled pilot trial
Y1 - 2007
SN - 01724622
UR - http://hdl.handle.net/11268/484
AB - Inspiratory muscle training (IMT) has been shown to improve exercise capacity in diseased populations. We chose to examine the effects of eight weeks of IMT on exercise capacity and spontaneous physical activity in elderly individuals. Eighteen moderately active elderly subjects (68.1 +/- 6.8 years [mean +/- SD]; range 58 - 78 years) were randomly assigned to either an experimental group (n = 9) or a control group (n = 9) in a double-blind manner. All subjects underwent inspiratory muscle testing, treadmill exercise testing and a four-day measurement period of spontaneous physical activity (using accelerometry) both pre- and post-intervention. The experimental group underwent eight weeks of incremental IMT using a pressure threshold device, while the control group underwent sham training using identical devices. After IMT training, inspiratory muscle strength (mean + 21.5 cm H (2)O; 95 % CI: 9.3, 33.7; p = 0.002), V.O (2peak) (+ 2.8 ml x min (-1) x kg (-1); 95 % CI: 0.5, 5.2; p = 0.022), time to exhaustion during a fixed workload treadmill test (+ 7.1 min; 95 % CI: 1.8, 2.4; p = 0.013) and time engaged in moderate-to-vigorous physical activity (+ 59 min; 95 % CI: 15, 78; p = 0.008) improved. Except for a decline in moderate-to-vigorous physical activity, no significant changes were seen in the control group. Therefore, IMT may be a useful technique for positively influencing exercise capacity and physical activity in elderly individuals.
KW - Exercise/*Physiology
KW - Inspiratory Capacity/*Physiology
KW - Respiratory Muscles/*Physiopathology
KW - Double-Blind Method
KW - Dyspnea/Physiopathology
KW - Dyspnea/Rehabilitation
KW - Exercise Test
KW - Female
KW - Humans
KW - Inhalation/Physiology
KW - Male
KW - Middle Aged
KW - Physical Endurance/Physiology
KW - Pilot Projects
KW - Efectos fisiológicos
KW - Deporte
KW - Anciano
LA - eng
ER -