Author: Zhenghua Cai1, Minghui Quan1,2, Muyang Huan1, Guangli Sun1, Stephen D Herrmann3, Barbara E Ainsworth1,4, Peijie Chen1
Affiliation: <sup>1</sup> School of Exercise and Health, Shanghai University of Sport, Shanghai, CHINA.
<sup>2</sup> Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, Shanghai University of Sport, Shanghai, CHINA.
<sup>3</sup> University of Kansas Medical Center, Kansas City, KS, USA.
<sup>4</sup> College of Health Solutions, Arizona State University, Phoenix, AZ, USA.
Conference/Journal: Int J Exerc Sci
Date published: 2023 Jun 1
Other:
Volume ID: 16 , Issue ID: 7 , Pages: 814-827 , Word Count: 243
Home-based video exercise interventions improve older adults' physiological performance and functional capacity. Little is known about the energy costs of video exercises in older adults. The Compendium of Physical Activities (PAs) has few items with PA metabolic equivalents (METs) in older adults. This study measured the energy costs of four chair and two standing exercises (sitting Tai Chi, Yoga, mobility ball, aerobics: standing, slow aerobics, and fast aerobics). Fifteen females and 14 males, 62-87 years (M ± SD, 73 ± 7.7 years), were categorized into three age groups (60-69, 70-79, 80-89). Oxygen uptake (VO2, ml·min-1·kg-1) and heart rate (HR, b·min-1) were measured by indirect calorimetry and heart rate monitor. MET values were calculated as standard- (activity VO2/3.5), rounded- (significant digit rounded to 0, 3, 5, 8), and corrected METs (individual resting metabolism). Results showed chair Yoga, Tai Chi, and mobility ball ranged from 2.0 to 2.8 rounded METs (light intensity). Chair- and standing aerobics ranged from 3.0 to 4.3 rounded METs (moderate intensity). Averaged HR ranged from 91.9 ± 12.7 b·min-1 to 115.4 ± 19.1 b·min-1 for all PAs. Corrected METs were higher than standard METs (P < .05). Standard METs were similar between age groups (P > .05). In conclusion, this study is unique as it measures the energy costs of sitting and standing video exercises that can be performed by older adults at home or in an exercise facility. Knowing the energy costs of PAs for older adults can provide exercises interventions to prevent sedentary lifestyles.
Keywords: METs; Physical activity; energy expenditure; senior adults.
PMID: 37649672 PMCID: PMC10464768