Research News: Walking Speed as a Simple Predictor of Metabolic Health in Obese Individuals
December 19, 2024
A new study reveals subjective walking speed as a quick, equipment-free tool for identifying metabolic health risks
A group of researchers in Japan has found that subjective walking speed, assessed by asking individuals to compare their pacewith peers, is linked to lower odds of metabolic diseases like diabetes, hypertension, and dyslipidemia in individuals with obesity. This simple, equipment-free assessment could serve as an effective tool in health examinations, paving the way for earlier interventions to prevent the “metabolic domino effect” triggered by obesity-related disorders.
Walking speed can provide insights into health, extending beyond mere mobility, so much so that it is considered to be the “sixth vital sign.” Past studies have suggested that a slow walking speed is correlated with the development of cardiovascular diseases and an increased risk of mortality in the elderly.
A recent study led by Prof. Kojiro Ishii from Doshisha University, in collaboration with Dr. Yukio Yamamoto, Dr. Kentaro Ikeue, Dr. Kan Oishi, and Dr. Takaaki Mori from Doshisha University, Dr. Megumi Kanasaki from Takeda Hospital, and Dr. Hajime Yamakage, Dr. Noriko Satoh-Asahara, and Dr. Izuru Masuda from National Hospital Organization Kyoto Medical Center, and conducted in Kyoto, Japan explored the connection between subjective walking speed and metabolic diseases risk, particularly in individuals with obesity. The study’s findings, published in volume 14 of Scientific Reports on November 15, 2024, suggest that assessing how a person perceives their walking pace relative to peers could become a vital tool for public health.
“This study clarified that even individuals with obesity, who are at higher risk for metabolic diseases, have lower odds of hypertension, diabetes mellitus, and dyslipidemia if they report a fast subjective walking speed,” notes Prof. Ishii.
The study involved 8,578 individuals with obesity (defined by body mass index), 9,626 individuals with high waist circumference, and 6,742 meeting both criteria. The participants were asked a single question in a health questionnaire: “Is your walking speed faster than that of your age and sex?” Based on their responses, they were categorized as either “fast” or “slow” walkers. The results showed that individuals who identified as faster walkers had significantly lower risks of diabetes (30% lower) and smaller but notable reductions in the risks of hypertension and dyslipidemia.
“This questionnaire is included in a standardized protocol by the Ministry of Health, Labor and Welfare in Japan,” Dr. Ishii explains. “This allowed for a quick and easy assessment without requiring specialized equipment.”
The simplicity and accessibility of this measure makes it ideal for application in clinical and public health settings. Subjective walking speed is self-reported and readily incorporated into standard examinations unlike objective walking speed, which needs resources, time, and space to assess. This aligns with the Japanese health examination guidelines, which emphasize screening for metabolic syndrome and obesity.
The researchers attributed their findings to the relationship between walking speed and overall health. Faster walkers often demonstrate better cardiorespiratory fitness, which is associated with lower levels of inflammation and oxidative stress—two key drivers of metabolic diseases.
According to the study, individuals who walk quickly may be more fit and have a lower risk of metabolic diseases. In addition to lowering the risk of metabolic diseases, encouraging faster walking, even subjectively, could help prevent the “metabolic domino effect,” where obesity leads to lifestyle-related diseases. Obesity is the first step in this cascade, which then advances to diseases like dementia and cardiovascular disease.
Dr. Ishii emphasizes, “Promoting a faster walking pace may be a helpful individual behavior to help prevent metabolic diseases, particularly in individuals with obesity.” Despite being cross-sectional and unable to establish causation, the study’s findings align with previous research on walking pace and health outcomes. Future long-term research could validate these findings and investigate the precise processes behind the noted correlations.
Overall, the study highlights how subjective walking speed measurements could revolutionize the identification of high-risk individuals and help prevent metabolic disorders linked to obesity, especially when incorporated into routine health examinations. As it turns out, a simple question like “Is your walking speed faster than your peers?” could provide life-saving insights.
A Flowchart illustrating the study participants, including exclusions based on age and missing data, and categorization byobesity criteria (BMI and waist circumference).
Researchers from Doshisha University used walking speed assessments to reveal that individuals with obesity who perceived their subjective walking speed as fast had a lower likelihood of metabolic diseases. This study highlights the potential for earlier intervention in preventing the cascade of diseases associated with obesity.
Image courtesy: Kojiro Ishii from Doshisha University, Japan
Image license: CC BY-NC-ND 4.0
Image link: https://www.nature.com/articles/s41598-024-78541-w
Usage restrictions: Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
Reference
| Title of original paper | Association between subjective walking speed and metabolic diseases in individuals with obesity: a cross-sectional analysis |
| Journal | Scientific Reports |
| DOI | 10.1038/s41598-024-78541-w |
Funding information
No funding was received to assist with the preparation of this study.
EurekAlert
https://www.eurekalert.org/news-releases/1068465
Profile
Kojiro Ishii
Professor , Faculty of Health and Sports Science Department of Health and Sports Science
Dr. Kojiro Ishi holds a PhD in Physical Activity and Human Performance. His research focuses on physical activity, food for health, and health and human performance. His research emphasizes the use of physical activity to improve health, well-being, activity, and participation across the life course. His research explores the connections between city planning, sedentary behavior, physical activity, diet, and health across the lifespan. Dr. Ishii has authored 111 publications and has 1,880 citations to his credit.
Yuiko Yamamoto
Ph.D.student, Graduate School of Health andSports Science
Yuiko Yamamoto is the first author of the paper. She also published the paper below as a first author.
Yuiko Yamamoto, Kentaro Ikeue, Megumi Kanasaki, Hajime Yamakage, Noriko Satoh-Asahara, Izuru Masuda, Kojiro Ishii. Age-wise examination of the association of obesity based on body mass index and waist circumference with metabolic diseases in comprehensive health checkup participants. Obes Sci Pract. 2024;e746.
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