Page 5 - 《运动与健康科学》(英文)2024年第2期

TaggedAPTARAEndTaggedAPTARAFigure Available online at www.sciencedirect.com

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Journal of Sport and Health Science 13 (2024) 127129

Commentary

TaggedAPTARAH1Commentary on “Association of daily sitting time and leisure-time physical

activity with body fat among U.S. adults”TaggedAPTARAEnd

TaggedAPTARAPBarbara E. AinsworthTaggedAPTARAEnd
TaggedAPTARAPSchool of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
TaggedAPTARAEnd Received 1 September 2023; accepted 5 September 2023
Available online 10 September 2023

2095-2546/Ó 2024 Published by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license.
(http://creativecommons.org/licenses/by-nc-nd/4.0/)

TaggedAPTARAPIn their study, association of daily sitting time and physical inactivity on mortality, morbidity, and health-related
leisure-time physical activity (LTPA) with body fat among U.S. conditions. For example, in an analysis of National Health and
1
Adults, Liao et al. analyzed data from the 20112018 National Examination Survey data from 2007 to 2015, Cao et al. 9
Health and Examination Survey to examine associations between showed that inactive and insufficiently active cancer survivors
h/day sitting, meeting (or not meeting) the U.S. Physical Activity who sat for 6 h/day were 3.92 times (odds ratio (OR) = 3.92,
Guidelines of 150 min/week of moderate- and vigorous-inten- 95% confidence interval (95%CI): 2.157.16) more likely to
sity LTPA, and combinations of sitting time and LTPA on total die from all-causes and 4.71 times (OR = 4.71, 95%CI:
and trunk percent body fat (BF%). LTPA and total sitting time 1.6013.9) more likely to die from cancer as compared to
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were measured with the Global Physical Activity Questionnaire. sufficiently active cancer survivors who sat for 6 h/day. Park
For LTPA, respondents recalled the minutes spent in moderate- et al. 10 analyzed data from the 2014 and 2015 Korea National
and vigorous-intensity LTPA in the past week. For total sitting Health and Nutrition Examination Survey showing joint
time, respondents recalled the h/day sitting at school, at home, effects of sitting and LTPA on chronic low back pain.
getting to and from places, and with friends. BF% was measured Respondents with low LTPA (inactive and insufficiently
using dual-energy X-ray absorptiometry scans to identify total active) and sitting more than 7 h/day had a 46% increased
body fat (head, limbs, and trunk area) and trunk body fat, odds (OR = 1.46, 95%CI: 1.131.88) of chronic low back pain
compared to sufficiently active respondents who sat more than
reflecting abdominal body fat (herein referred to as BF%).TaggedAPTARAEnd
TaggedAPTARAPResults showed a positive association between total sitting 7 h/day (OR = 1.18; 95%CI: 0.871.60). In a subsequent anal-
time and a negative association between LTPA and BF% in ysis of the Korea National Health and Nutrition Examination
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10,808 males and females aged 20 years to 59 years. LTPA Survey, Choi et al. examined the associations between sitting
had a moderating effect on BF% for combinations of sitting time, LTPA, and health-related quality of life measured with
time (<4 h/day, 4<6 h/day, 68 h/day, and >8 h/day) and the EuroQol 5 Dimension 5 Level scale 14 in older adults ages
LTPA categories (0 min/week (inactive), <150 min/week 65. Compared with sufficiently active respondents who sat
(insufficiently active), and 150 min/week (sufficiently for <8 h/day, ORs (OR and 95%CI) for adverse health-related
active)). Inactive and insufficiently active respondents had a quality of life among inactive and insufficiently active (<150
graded increase in BF% at all levels of sitting time. Suffi- min/week) respondents sitting 8 h/day were: poor mobility
ciently active respondents had increases in BF% only when (OR = 1.90, 95%CI: 1.472.46), low self-care ability
sitting 6 h/week. These results show the deleterious effects (OR = 2.14, 95%CI: 1.413.27), low usual activity
of prolonged sitting time on BF%, especially in persons who (OR = 3.38, 95%CI: 2.374.82), pain and discomfort
are physically inactive or insufficiently active. They also show (OR = 1.79, 95%CI: 1.382.31), and high anxiety and depres-
the moderating effects of sufficient LTPA on sitting time in sion (OR = 1.69, 95%CI: 1.192.41). Alternatively, in suffi-
ciently active respondents sitting 8 h/day, 3 (of 5) items on
protecting against increased BF%.TaggedAPTARAEnd
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TaggedAPTARAPLiao et al.’s results are consistent with studies showing the health-related quality of life questionnaire (mobility, self-
independent 38 and joint effects 913 of prolonged sitting and care, anxiety, and depression) were not statistically different
from sufficiently active respondents sitting <8 h/day. Results
from these studies and others show a consistent pattern that
TaggedAPTARAEndTaggedAPTARAEnd Peer review under responsibility of Shanghai University of Sport.
E-mail address: Barbara.ainsworth@asu.edu (B.E. Ainsworth). sitting for prolonged periods and engaging in <150 m/week in
https://doi.org/10.1016/j.jshs.2023.09.002
Cite this article: Ainsworth BE. Commentary on “Association of daily sitting time and leisure-time physical activity with body fat among U.S. adults”.
J Sport Health Sci 2024;13:1279.