The time course of physiological adaptations to high-intensity interval training in older adults.

ABSTRACT:

Objective

High-intensity interval training (HIIT) has been shown to be more effective than moderate continuous aerobic exercise for improving cardiorespiratory fitness (CRF) in a limited time frame. However, the length of time required for HIIT to elicit clinically significant improvements in the CRF of older adults is currently unknown. The aim of this study was to compare changes in the CRF of older adults completing identical HIIT protocols of varying durations.

Methods

Forty healthy, community-dwelling older adults completed a cardiopulmonary exercise test (CPET) before and after 2, 4, or 6 weeks of fully supervised HIIT on a cycle ergometer, or a no-intervention control period.

Results

Anaerobic threshold (AT) was increased only after 4 (+1.9 [SD 1.1] mL/kg/min)

SUBMITTER: Herrod PJJ 

PROVIDER: S-EPMC7771560 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature