Research BriefLight-Intensity Physical Activity and Life Expectancy: National Health and Nutrition Survey
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INTRODUCTION
Levels of moderate-to-vigorous physical activity (MVPA) are low despite numerous benefits, including increased life expectancy.1 To date, physical activity (PA) guidelines have focused primarily on MVPA.2 Recent evidence suggests that light-intensity PA (LPA), defined as activities of 1.5–3 METs, may also offer health benefits,3,4 particularly among people with low levels of MVPA.5 Evidence on LPA and mortality has been identified as a major future research need.2 Quantifying the years of life
METHODS
This prospective analysis used data from the 2003–2004 and 2005–2006 waves of the National Health and Nutrition Examination Survey (NHANES).6 Data were linked to death records from the National Death Index through December 31, 2015. Participants were aged ≥18 years with at least 1 valid day (>10 hours per day of wear time) of accelerometry data (n=8,410). Sensitivity analyses were conducted on the basis of participants with ≥4 valid days of data.7 Considering that those with occult disease were
RESULTS
Mean wear time was 865 minutes per day (251 minutes was for LPA). Those who had low LPA were older, and the majority were male, White, university graduates, and not married and had more medical conditions (Table 1).
During a mean follow-up of 11 years and at 55,520 person-years (n=6,636), 994 deaths were recorded. Compared with the low LPA group, participants in the medium and high LPA groups had a lower risk of all-cause mortality (hazard ratio=0.66, 95% CI=0.54, 0.80 and hazard ratio=0.64, 95%
DISCUSSION
This is the first study to estimate the YLG from accelerometer-derived LPA. Consistent with previous studies,3,4 these findings suggest that LPA could add years to life, particularly among those with low MVPA.
A recent meta-analysis reported moderately consistent evidence for the protective effects of LPA on cardiometabolic health while indicating an inverse association between LPA and all-cause mortality.3 Several studies of varied quality11 have examined the associations between LPA and
CONCLUSIONS
Compared with MVPA, LPA is mostly incidental in nature without requirements for equipment, facilities, or high levels of fitness, skills, or motivation and therefore may be more feasible and accessible to the broader population.3 Facilitating LPA through public health programs and policy interventions could be considered a viable and complementary strategy to promoting MVPA.20 Promoting LPA may be particularly relevant for people unable to meet the current public health recommendations.21,22
ACKNOWLEDGMENTS
The research presented in this paper is that of the authors.
BdPC had the original idea, conceptualized the project, conducted the analysis, and wrote the first draft of the manuscript. DD conceptualized the project, helped in drafting the manuscript, and critically reviewed the paper. SJHB and PAG provided relevant input and critically reviewed the manuscript. All authors approved the final version of the paper.
No financial disclosures were reported by the authors of this paper.
REFERENCES (22)
- et al.
Accelerometer-measured dose-response for physical activity, sedentary time, and mortality in U.S. adults [published correction appears in Am J Clin Nutr. 2018;107(3):483]
Am J Clin Nutr
(2016) - et al.
Objectively measured physical activity and mortality risk among American adults
Am J Prev Med
(2017) - et al.
Reallocating accelerometer-assessed sedentary time to light or moderate- to vigorous-intensity physical activity reduces frailty levels in older adults: an isotemporal substitution approach in the TSHA Study
J Am Med Dir Assoc
(2018) - et al.
Leisure time physical activity of moderate to vigorous intensity and mortality: a large pooled cohort analysis
PLoS Med
(2012) - et al.
The physical activity guidelines for Americans
JAMA
(2018) - et al.
How does light-intensity physical activity associate with adult cardiometabolic health and mortality? Systematic review with meta-analysis of experimental and observational studies
Br J Sports Med
(2019) - et al.
Is objectively measured light-intensity physical activity associated with health outcomes after adjustment for moderate-to-vigorous physical activity in adults? A systematic review
Int J Behav Nutr Phys Act
(2018) - et al.
National Health and Nutrition Examination Survey: plan and operations, 1999-2010
Vital Health Stat 1
(2013) - et al.
Physical activity in the United States measured by accelerometer
Med Sci Sports Exerc
(2008) - et al.
Simulation study of the effect of the early mortality exclusion on confounding of the exposure-mortality relation by preexisting disease
Am J Epidemiol
(2001)
Leisure-time physical activity and life expectancy in people with cardiometabolic multimorbidity and depression
J Intern Med
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