Kinesiology 4474A/B Study Guide - Midterm Guide: Bronchus, Respiratory Tract, Calcification
5 Apr 2016
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Physical activity and exercise guidelines for older adults: respiratory review. Require the integration of physiological mechanisms that enable cardiovascular and respiratory system to support the increase energy demands of contracting muscles. Residual volume: leftover after forced expiration: 25% increase with age. Vital capacity: tv + irv + erv: 25% decrease with age. Total capacity: res + tv + irv + erv. Ventilation ve (l/min: = frequency (breaths/minute) x tidal volume (l) Example at rest: ve = 12 breaths/min x 0. 5 l = 6l/min. Example at exercise: ve = 60 breaths/min x 3. 0 l = 180 l/min. With exercise training, increase potential to breath. System becomes more elastic (i. e. rig cage and lungs) Increase respiratory muscle strength and endurance: can train respiratory muscles through exercise, without exercise, they can weaken, especially in older adults. Pulmonary circulation: the blood and vessels that connect the heart and lungs, blood-gas interface = alveoli/blood.
