{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T15:28:47Z","timestamp":1780586927181,"version":"3.54.1"},"reference-count":67,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2024,4,1]],"date-time":"2024-04-01T00:00:00Z","timestamp":1711929600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2024,4,1]],"date-time":"2024-04-01T00:00:00Z","timestamp":1711929600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2024,2,15]],"date-time":"2024-02-15T00:00:00Z","timestamp":1707955200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["321336"],"award-info":[{"award-number":["321336"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["328818"],"award-info":[{"award-number":["328818"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["310526"],"award-info":[{"award-number":["310526"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010663","name":"European Research Council","doi-asserted-by":"publisher","award":["693045"],"award-info":[{"award-number":["693045"]}],"id":[{"id":"10.13039\/100010663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Experimental Gerontology"],"published-print":{"date-parts":[[2024,4]]},"DOI":"10.1016\/j.exger.2024.112381","type":"journal-article","created":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T01:40:57Z","timestamp":1708566057000},"page":"112381","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":2,"special_numbering":"C","title":["Laboratory-assessed gait cycle entropy for classifying walking limitations among community-dwelling older adults"],"prefix":"10.1016","volume":"188","author":[{"given":"Olli-Pekka","family":"Mattila","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taina","family":"Rantanen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Merja","family":"Rantakokko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Karavirta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Neil","family":"Cronin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timo","family":"Rantalainen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.exger.2024.112381_bb0005","doi-asserted-by":"crossref","DOI":"10.2196\/36762","article-title":"SciKit digital health: Python package for streamlined wearable inertial sensor data processing","volume":"10","author":"Adamowicz","year":"2022","journal-title":"JMIR Mhealth Uhealth"},{"key":"10.1016\/j.exger.2024.112381_bb0010","doi-asserted-by":"crossref","first-page":"579","DOI":"10.3390\/e20080579","article-title":"Sample entropy of human gait center of pressure displacement: a systematic methodological analysis","volume":"20","author":"Ahmadi","year":"2018","journal-title":"Entropy"},{"key":"10.1016\/j.exger.2024.112381_bb0015","doi-asserted-by":"crossref","first-page":"434","DOI":"10.1111\/j.1532-5415.1996.tb06417.x","article-title":"Gait disorders in older adults","volume":"44","author":"Alexander","year":"1996","journal-title":"J. Am. Geriatr. Soc."},{"key":"10.1016\/j.exger.2024.112381_bb0020","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.gaitpost.2016.04.001","article-title":"Complexity of human gait pattern at different ages assessed using multiscale entropy: from development to decline","volume":"47","author":"Bisi","year":"2016","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0025","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1016\/j.gaitpost.2016.11.009","article-title":"Multiscale and Shannon entropies during gait as fall risk predictors\u2014a prospective study","volume":"52","author":"Bizovska","year":"2017","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0030","first-page":"93","article-title":"The differences between overground and treadmill walking in nonlinear, entropy-based and frequency variables derived from accelerometers in young and older women: preliminary report","volume":"20","author":"Bizovska","year":"2018","journal-title":"Acta Bioeng. Biomech."},{"key":"10.1016\/j.exger.2024.112381_bb0035","doi-asserted-by":"crossref","first-page":"4983","DOI":"10.3390\/s23104983","article-title":"Multiscale entropy algorithms to analyze complexity and variability of trunk accelerations time series in subjects with Parkinson\u2019s disease","volume":"23","author":"Castiglia","year":"2023","journal-title":"Sensors"},{"key":"10.1016\/j.exger.2024.112381_bb0040","doi-asserted-by":"crossref","first-page":"1543","DOI":"10.1016\/j.jbiomech.2005.04.008","article-title":"Aging, regularity and variability in maximum isometric moments","volume":"39","author":"Challis","year":"2006","journal-title":"J. Biomech."},{"key":"10.1016\/j.exger.2024.112381_bb0045","doi-asserted-by":"crossref","DOI":"10.1103\/PhysRevLett.89.068102","article-title":"Multiscale entropy analysis of complex physiologic time series","volume":"89","author":"Costa","year":"2002","journal-title":"Phys. Rev. Lett."},{"key":"10.1016\/j.exger.2024.112381_bb0050","doi-asserted-by":"crossref","unstructured":"Costa, M., Peng, C.-K., L. Goldberger, A., Hausdorff, J.M., 2003. Multiscale entropy analysis of human gait dynamics. Phys. Stat. Mech. Its Appl., RANDOMNESS AND COMPLEXITY: Proceedings of the International Workshop in honor of Shlomo Havlin's 60th birthday 330, 53\u201360. https:\/\/doi.org\/10.1016\/j.physa.2003.08.022.","DOI":"10.1016\/j.physa.2003.08.022"},{"key":"10.1016\/j.exger.2024.112381_bb0055","doi-asserted-by":"crossref","first-page":"541","DOI":"10.3390\/e21060541","article-title":"Approximate entropy and sample entropy: a comprehensive tutorial","volume":"21","author":"Delgado-Bonal","year":"2019","journal-title":"Entropy"},{"key":"10.1016\/j.exger.2024.112381_bb0060","doi-asserted-by":"crossref","first-page":"1050","DOI":"10.1519\/JSC.0000000000002888","article-title":"Complexity of knee extensor torque: effect of aging and contraction intensity","volume":"35","author":"Fiogb\u00e9","year":"2021","journal-title":"J. Strength Cond. Res."},{"key":"10.1016\/j.exger.2024.112381_bb0065","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1016\/j.clinph.2018.10.023","article-title":"Increased EMG intermuscular coherence and reduced signal complexity in Parkinson\u2019s disease","volume":"130","author":"Flood","year":"2019","journal-title":"Clin. Neurophysiol."},{"key":"10.1016\/j.exger.2024.112381_bb0070","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/0022-3956(75)90026-6","article-title":"Mini-mental state","volume":"12","author":"Folstein","year":"1975","journal-title":"J. Psychiatr. Res."},{"key":"10.1016\/j.exger.2024.112381_bb0075","doi-asserted-by":"crossref","first-page":"M206","DOI":"10.1093\/gerona\/51A.5.M206","article-title":"Functional decline in older adults: expanding methods of ascertainment","volume":"51","author":"Fried","year":"1996","journal-title":"J. Gerontol. A Biol. Sci. Med. Sci."},{"key":"10.1016\/j.exger.2024.112381_bb0080","doi-asserted-by":"crossref","unstructured":"Fried, L.P., Bandeen-Roche, K., Chaves, P., Johnson, B.A., others, 2000. Preclinical mobility disability predicts incident mobility disability in older women. J. Gerontol.-Biol. Sci. Med. Sci. 55, M43.","DOI":"10.1093\/gerona\/55.1.M43"},{"key":"10.1016\/j.exger.2024.112381_bb0085","doi-asserted-by":"crossref","first-page":"400","DOI":"10.1016\/j.medengphy.2015.02.003","article-title":"Instrumenting gait with an accelerometer: a system and algorithm examination","volume":"37","author":"Godfrey","year":"2015","journal-title":"Med. Eng. Phys."},{"key":"10.1016\/j.exger.2024.112381_bb0090","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.physa.2006.10.077","article-title":"Revisiting sample entropy analysis","volume":"376","author":"Govindan","year":"2007","journal-title":"Phys. Stat. Mech. Its Appl."},{"key":"10.1016\/j.exger.2024.112381_bb0095","doi-asserted-by":"crossref","first-page":"M85","DOI":"10.1093\/geronj\/49.2.M85","article-title":"A short physical performance battery assessing lower extremity function: association with self-reported disability and prediction of mortality and nursing home admission","volume":"49","author":"Guralnik","year":"1994","journal-title":"J. Gerontol."},{"key":"10.1016\/j.exger.2024.112381_bb0100","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1038\/s41586-020-2649-2","article-title":"Array programming with NumPy","volume":"585","author":"Harris","year":"2020","journal-title":"Nature"},{"key":"10.1016\/j.exger.2024.112381_bb0105","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1186\/1743-0003-2-19","article-title":"Gait variability: methods, modeling and meaning","volume":"2","author":"Hausdorff","year":"2005","journal-title":"J. NeuroEngineering Rehabil."},{"key":"10.1016\/j.exger.2024.112381_bb0110","doi-asserted-by":"crossref","first-page":"552","DOI":"10.1016\/j.gaitpost.2007.07.015","article-title":"Should trunk movement or footfall parameters quantify gait asymmetry in chronic stroke patients?","volume":"27","author":"Hodt-Billington","year":"2008","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0115","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1016\/j.gaitpost.2018.07.004","article-title":"The effect of walking speed on quality of gait in older adults","volume":"65","author":"Huijben","year":"2018","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0120","doi-asserted-by":"crossref","first-page":"1420","DOI":"10.1016\/j.jbiomech.2016.02.055","article-title":"The complexity of daily life walking in older adult community-dwelling fallers and non-fallers","volume":"49","author":"Ihlen","year":"2016","journal-title":"J. Biomech."},{"key":"10.1016\/j.exger.2024.112381_bb0125","doi-asserted-by":"crossref","unstructured":"Ihlen, E.A.F., van Schooten, K.S., Bruijn, S.M., van Die\u00ebn, J.H., Vereijken, B., Helbostad, J.L., Pijnappels, M., 2018. Improved prediction of falls in community-dwelling older adults through phase-dependent entropy of daily-life walking. Front. Aging Neurosci. 10.","DOI":"10.3389\/fnagi.2018.00044"},{"key":"10.1016\/j.exger.2024.112381_bb0130","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0162034","article-title":"Differential changes with age in multiscale entropy of electromyography signals from leg muscles during treadmill walking","volume":"11","author":"Kang","year":"2016","journal-title":"PLoS One"},{"key":"10.1016\/j.exger.2024.112381_bb0135","unstructured":"Kassambara, A., 2023. rstatix: Pipe-friendly Framework for Basic Statistical Tests (Manual)."},{"key":"10.1016\/j.exger.2024.112381_bb0140","doi-asserted-by":"crossref","first-page":"653","DOI":"10.1136\/bmj.292.6521.653","article-title":"Six minute walking test for assessing exercise capacity in chronic heart failure","volume":"292","author":"Lipkin","year":"1986","journal-title":"Br. Med. J. (Clin. Res. Ed.)"},{"key":"10.1016\/j.exger.2024.112381_bb0145","doi-asserted-by":"crossref","first-page":"1806","DOI":"10.1001\/jama.1992.03480130122036","article-title":"Loss of \u201ccomplexity\u201d and aging potential applications of fractals and chaos theory to senescence","volume":"267","author":"Lipsitz","year":"1992","journal-title":"JAMA"},{"key":"10.1016\/j.exger.2024.112381_bb0150","doi-asserted-by":"crossref","first-page":"1108","DOI":"10.1016\/j.apmr.2007.06.016","article-title":"Construct and predictive validity of a self-reported measure of preclinical mobility limitation","volume":"88","author":"M\u00e4nty","year":"2007","journal-title":"Arch. Phys. Med. Rehabil."},{"key":"10.1016\/j.exger.2024.112381_bb0155","doi-asserted-by":"crossref","first-page":"689","DOI":"10.1007\/s00198-009-0950-x","article-title":"Self-reported preclinical mobility limitation and fall history as predictors of future falls in older women: prospective cohort study","volume":"21","author":"M\u00e4nty","year":"2010","journal-title":"Osteoporos. Int."},{"key":"10.1016\/j.exger.2024.112381_bb0160","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1016\/j.gaitpost.2012.02.019","article-title":"An enhanced estimate of initial contact and final contact instants of time using lower trunk inertial sensor data","volume":"36","author":"McCamley","year":"2012","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0165","doi-asserted-by":"crossref","first-page":"764","DOI":"10.3390\/e20100764","article-title":"On the calculation of sample entropy using continuous and discrete human gait data","volume":"20","author":"McCamley","year":"2018","journal-title":"Entropy"},{"key":"10.1016\/j.exger.2024.112381_bb0170","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/S0021-9290(03)00233-1","article-title":"Estimation of gait cycle characteristics by trunk accelerometry","volume":"37","author":"Moe-Nilssen","year":"2004","journal-title":"J. Biomech."},{"key":"10.1016\/j.exger.2024.112381_bb0175","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1016\/j.humov.2016.03.010","article-title":"Gait variability in people with neurological disorders: a systematic review and meta-analysis","volume":"47","author":"Moon","year":"2016","journal-title":"Hum. Mov. Sci."},{"key":"10.1016\/j.exger.2024.112381_bb0180","doi-asserted-by":"crossref","first-page":"743","DOI":"10.1111\/j.1532-5415.2006.00701.x","article-title":"Meaningful change and responsiveness in common physical performance measures in older adults","volume":"54","author":"Perera","year":"2006","journal-title":"J. Am. Geriatr. Soc."},{"key":"10.1016\/j.exger.2024.112381_bb0185","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1093\/aje\/kwj063","article-title":"The inconsistency of \u201coptimal\u201d cut-points using two ROC based criteria","volume":"163","author":"Perkins","year":"2006","journal-title":"Am. J. Epidemiol."},{"key":"10.1016\/j.exger.2024.112381_bb0190","doi-asserted-by":"crossref","first-page":"2046","DOI":"10.1113\/EP089711","article-title":"Physiological complexity: influence of ageing, disease and neuromuscular fatigue on muscle force and torque fluctuations","volume":"106","author":"Pethick","year":"2021","journal-title":"Exp. Physiol."},{"key":"10.1016\/j.exger.2024.112381_bb0195","doi-asserted-by":"crossref","DOI":"10.1016\/j.jbiomech.2021.110244","article-title":"The gait is less stable in children with cerebral palsy in normal and dual-task gait compared to typically developed peers","volume":"117","author":"Piitulainen","year":"2021","journal-title":"J. Biomech."},{"key":"10.1016\/j.exger.2024.112381_bb0200","doi-asserted-by":"crossref","first-page":"2297","DOI":"10.1073\/pnas.88.6.2297","article-title":"Approximate entropy as a measure of system complexity","volume":"88","author":"Pincus","year":"1991","journal-title":"Proc. Natl. Acad. Sci."},{"key":"10.1016\/j.exger.2024.112381_bb0205","doi-asserted-by":"crossref","first-page":"1570","DOI":"10.1186\/s12889-019-7869-8","article-title":"Assessing physical performance and physical activity in large population-based aging studies: home-based assessments or visits to the research center?","volume":"19","author":"Portegijs","year":"2019","journal-title":"BMC Public Health"},{"key":"10.1016\/j.exger.2024.112381_bb0210","series-title":"R: A Language and Environment for Statistical Computing (Manual)","author":"R Core Team","year":"2023"},{"key":"10.1016\/j.exger.2024.112381_bb0215","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1097\/JES.0b013e3182556f1e","article-title":"Mobility decline in old age","volume":"41","author":"Rantakokko","year":"2013","journal-title":"Exerc. Sport Sci. Rev."},{"key":"10.1016\/j.exger.2024.112381_bb0220","doi-asserted-by":"crossref","first-page":"1189","DOI":"10.1007\/s11136-015-1137-x","article-title":"Changes in life-space mobility and quality of life among community-dwelling older people: a 2-year follow-up study","volume":"25","author":"Rantakokko","year":"2016","journal-title":"Qual. Life Res."},{"key":"10.1016\/j.exger.2024.112381_bb0225","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0154396","article-title":"Mobility modification alleviates environmental influence on incident mobility difficulty among community-dwelling older people: a two-year follow-up study","volume":"11","author":"Rantakokko","year":"2016","journal-title":"PLoS One"},{"key":"10.1016\/j.exger.2024.112381_bb0230","doi-asserted-by":"crossref","first-page":"1252","DOI":"10.1093\/gerona\/glw348","article-title":"Task modifications in walking postpone decline in life-space mobility among community-dwelling older people: a 2-year follow-up study","volume":"72","author":"Rantakokko","year":"2017","journal-title":"J. Gerontol. Ser. A"},{"key":"10.1016\/j.exger.2024.112381_bb0235","doi-asserted-by":"crossref","first-page":"2858","DOI":"10.3390\/s20102858","article-title":"Gait variability using waist- and ankle-worn inertial measurement units in healthy older adults","volume":"20","author":"Rantalainen","year":"2020","journal-title":"Sensors"},{"key":"10.1016\/j.exger.2024.112381_bb0240","doi-asserted-by":"crossref","first-page":"1439","DOI":"10.1111\/j.1532-5415.1997.tb03193.x","article-title":"Physical activity and the changes in maximal isometric strength in men and women from the age of 75 to 80 years","volume":"45","author":"Rantanen","year":"1997","journal-title":"J. Am. Geriatr. Soc."},{"key":"10.1016\/j.exger.2024.112381_bb0245","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1186\/s12889-018-5487-5","article-title":"Active aging \u2013 resilience and external support as modifiers of the disablement outcome: AGNES cohort study protocol","volume":"18","author":"Rantanen","year":"2018","journal-title":"BMC Public Health"},{"key":"10.1016\/j.exger.2024.112381_bb0250","doi-asserted-by":"crossref","first-page":"H2039","DOI":"10.1152\/ajpheart.2000.278.6.H2039","article-title":"Physiological time-series analysis using approximate entropy and sample entropy","volume":"278","author":"Richman","year":"2000","journal-title":"Am. J. Physiol.-Heart Circ. Physiol."},{"key":"10.1016\/j.exger.2024.112381_bb0255","doi-asserted-by":"crossref","first-page":"170","DOI":"10.1016\/j.gaitpost.2013.05.002","article-title":"Estimating fall risk with inertial sensors using gait stability measures that do not require step detection","volume":"38","author":"Riva","year":"2013","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0260","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.gaitpost.2016.02.012","article-title":"Treadmill walking is not equivalent to overground walking for the study of walking smoothness and rhythmicity in older adults","volume":"46","author":"Row Lazzarini","year":"2016","journal-title":"Gait Posture"},{"key":"10.1016\/j.exger.2024.112381_bb0265","doi-asserted-by":"crossref","first-page":"3022","DOI":"10.1007\/s00415-019-09500-z","article-title":"Deterioration of specific aspects of gait during the instrumented 6-min walk test among people with multiple sclerosis","volume":"266","author":"Shema-Shiratzky","year":"2019","journal-title":"J. Neurol."},{"key":"10.1016\/j.exger.2024.112381_bb0270","doi-asserted-by":"crossref","first-page":"672","DOI":"10.1111\/j.1532-5415.1999.tb01588.x","article-title":"Who walks? Factors associated with walking behavior in disabled older women with and without self-reported walking difficulty","volume":"47","author":"Simonsick","year":"1999","journal-title":"J. Am. Geriatr. Soc."},{"key":"10.1016\/j.exger.2024.112381_bb0275","doi-asserted-by":"crossref","first-page":"7881","DOI":"10.1093\/bioinformatics\/bti623","article-title":"ROCR: visualizing classifier performance in R","volume":"21","author":"Sing","year":"2005","journal-title":"Bioinforma. Oxf. Engl."},{"key":"10.1016\/j.exger.2024.112381_bb0280","first-page":"806","article-title":"Outdoor mobility and use of adaptive or maladaptive walking modifications among older people","volume":"75","author":"Skantz","year":"2020","journal-title":"J. Gerontol. A Biol. Sci. Med. Sci."},{"key":"10.1016\/j.exger.2024.112381_bb0285","first-page":"1018","article-title":"Associations between accelerometer-based free-living walking and self-reported walking capability among community-dwelling older people","volume":"29","author":"Skantz","year":"2021","journal-title":"J. Aging Phys. Act."},{"key":"10.1016\/j.exger.2024.112381_bb0290","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/S1474-4422(06)70678-0","article-title":"Neurological gait disorders in elderly people: clinical approach and classification","volume":"6","author":"Snijders","year":"2007","journal-title":"Lancet Neurol."},{"key":"10.1016\/j.exger.2024.112381_bb0295","doi-asserted-by":"crossref","first-page":"1092","DOI":"10.1111\/sms.13017","article-title":"Reliable recognition of lying, sitting, and standing with a hip-worn accelerometer","volume":"28","author":"V\u00e4h\u00e4-Ypy\u00e4","year":"2018","journal-title":"Scand. J. Med. Sci. Sports"},{"key":"10.1016\/j.exger.2024.112381_bb0300","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0197-4580(01)00247-0","article-title":"Changing complexity in human behavior and physiology through aging and disease","volume":"23","author":"Vaillancourt","year":"2002","journal-title":"Neurobiol. Aging"},{"key":"10.1016\/j.exger.2024.112381_bb0305","doi-asserted-by":"crossref","first-page":"903","DOI":"10.1152\/japplphysiol.00166.2002","article-title":"Aging and the time and frequency structure of force output variability","volume":"94","author":"Vaillancourt","year":"2003","journal-title":"J. Appl. Physiol."},{"key":"10.1016\/j.exger.2024.112381_bb0310","doi-asserted-by":"crossref","first-page":"1594","DOI":"10.1016\/S1388-2457(01)00593-4","article-title":"Regularity of force tremor in Parkinson\u2019s disease","volume":"112","author":"Vaillancourt","year":"2001","journal-title":"Clin. Neurophysiol."},{"key":"10.1016\/j.exger.2024.112381_bb0315","series-title":"Python 3 Reference Manual","author":"Van Rossum","year":"2009"},{"key":"10.1016\/j.exger.2024.112381_bb0320","doi-asserted-by":"crossref","first-page":"1369","DOI":"10.1016\/j.physleta.2014.03.034","article-title":"Analysis of complex time series using refined composite multiscale entropy","volume":"378","author":"Wu","year":"2014","journal-title":"Phys. Lett. A"},{"key":"10.1016\/j.exger.2024.112381_bb0325","doi-asserted-by":"crossref","first-page":"979","DOI":"10.1007\/s10439-020-02616-8","article-title":"Entropy analysis in gait research: methodological considerations and recommendations","volume":"49","author":"Yentes","year":"2021","journal-title":"Ann. Biomed. Eng."},{"key":"10.1016\/j.exger.2024.112381_bb0330","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1007\/s10439-012-0668-3","article-title":"The appropriate use of approximate entropy and sample entropy with short data sets","volume":"41","author":"Yentes","year":"2013","journal-title":"Ann. Biomed. Eng."},{"key":"10.1016\/j.exger.2024.112381_bb0335","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0966-6362(02)00190-X","article-title":"Assessment of spatio-temporal gait parameters from trunk accelerations during human walking","volume":"18","author":"Zijlstra","year":"2003","journal-title":"Gait Posture"}],"container-title":["Experimental Gerontology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0531556524000238?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0531556524000238?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T09:56:45Z","timestamp":1778752605000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0531556524000238"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,4]]},"references-count":67,"alternative-id":["S0531556524000238"],"URL":"https:\/\/doi.org\/10.1016\/j.exger.2024.112381","relation":{},"ISSN":["0531-5565"],"issn-type":[{"value":"0531-5565","type":"print"}],"subject":[],"published":{"date-parts":[[2024,4]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Laboratory-assessed gait cycle entropy for classifying walking limitations among community-dwelling older adults","name":"articletitle","label":"Article Title"},{"value":"Experimental Gerontology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.exger.2024.112381","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2024 The Authors. Published by Elsevier Inc.","name":"copyright","label":"Copyright"}],"article-number":"112381"}}