Purpose: This study aimed to measure the metabolic cost (METs) of walking activities in older adults, to examine the relationship between accelerometer output and METs across walking activities, and to compare measured MET values in older adults with the MET values in the compendium.
Methods: Twenty older adults (mean age = 75, range = 60-90 yr) completed eight walking activities (five treadmill based, three free living) for 6 min each. Oxygen consumption (V˙O2) and resting metabolic rate (RMR) were measured using a portable metabolic system, and motion was recorded using a waist-mounted ActiGraph accelerometer (GT3X; ActiGraph, Pensicola, FL). Energy expenditure across activities was defined as kilocalories per minute and measured as METs (V˙O2 / RMR) and standard METs (V˙O2 / 3.5 mL·kg-1·min-1). Mixed modeling was used to assess differences in counts per minute and kilocalories per minute by weight status, sex, comorbidity status, and functional status. Linear regression analysis was applied to develop a prediction equation for kilocalories per minute. Energy costs of walking were subsequently compared with METs in the compendium of physical activities.
Results: Average measured RMR was 2.6 mL·kg-1·min-1, 31.6% less than the standard RMR of 3.5 mL·kg-1·min-1. On average, standard METs were 71% lower than the measured METs across all walking activities. Measured MET levels differed from previously reported values in the literature and values listed in the compendium, resulting in misclassification of activity intensities for 60% of the walking conditions. Average counts for the walking activities ranged from 809 (treadmill = 1.5 mph) to 4593 counts per minute (treadmill = 3.5 mph). Previous regression equations consistently overestimate all activities compared with the measured energy cost in this sample of older adults.
Conclusion: This study identifies the need for equations and cut points specific to older adults.
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http://dx.doi.org/10.1249/MSS.0b013e318276c73c | DOI Listing |
J Neurol Phys Ther
November 2024
Faculty of Rehabilitation Sciences, REVAL-Rehabilitation Research Centre, Hasselt University, Hasselt Diepenbeek, Limburg, Belgium (S.P., P.M., J.S.); Department of Otorhinolaryngology and Head & Neck Surgery, School for Mental Health and Neuroscience, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Centre, The Netherlands (S.P., R.V.D.B); Department of Otorhinolaryngology, Head and Neck Surgery ZOL Hospital, Belgium (N.L., W.L.); and Department of Nutrition and Movement Sciences, NUTRIM Institute of Nutrition and Translational Research in Metabolism, Maastricht University, The Netherlands (K.M.).
Background And Purpose: Even though Benign Paroxysmal Positioning Vertigo (BPPV) is one of the most reported vestibular disorders, its interaction with frailty and postural control in older adults is hardly or not investigated.
Methods: Thirty-seven older adults (≥65 years) with a diagnosis of BPPV (oaBPPV) (mean age 73.13 (4.
J Occup Environ Med
November 2024
All the authors affiliated to Yiling People's Hospital of Yichang City, 32# Donghu st., Yichang, Hubei, China, 443000.
Objective: This study evaluates the utility of serum s-αKlotho levels as a quantifiable biomarker for overwork.
Methods: Frontline medical workers aged 20-55 from Yiling People's Hospital of Yichang were recruited. Criteria included non-smokers, non-heavy drinkers, no chronic medication use, and no acute illnesses recently.
JMIR Form Res
January 2025
Faculty of Audiology and Speech Language Pathology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.
Background: The prevalence of hearing loss in infants in India varies between 4 and 5 per 1000. Objective-based otoacoustic emissions and auditory brainstem response have been used in high-income countries for establishing early hearing screening and intervention programs. Nevertheless, the use of objective screening tests in low- and middle-income countries (LMICs) such as India is not feasible.
View Article and Find Full Text PDFJMIR Res Protoc
January 2025
Department of Public Health and Primary Care, KU Leuven-University of Leuven, Leuven, Belgium.
Background: Young patients aged 16 to 25 years with type 1 diabetes (T1D) often encounter challenges related to deteriorating disease control and accelerated complications. Mobile apps have shown promise in enhancing self-care among youth with diabetes. However, inconsistent findings suggest that further evidence is necessary to confirm the effectiveness of app-based interventions.
View Article and Find Full Text PDFNeurology
February 2025
Department of Neurology, John Hunter Hospital, Newcastle, Australia.
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