دورية أكاديمية
Understanding the influence of context on real-world walking energetics.
| العنوان: | Understanding the influence of context on real-world walking energetics. |
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| المؤلفون: | Baroudi L; University of Michigan, Mechanical Engineering, Ann Arbor, MI 48109, USA., Barton K; University of Michigan, Mechanical Engineering, Ann Arbor, MI 48109, USA.; University of Michigan, Robotics, Ann Arbor, MI 48109, USA., Cain SM; West Virginia University, Chemical and Biomedical Engineering, Morgantown, WV 26506, USA., Shorter KA; University of Michigan, Mechanical Engineering, Ann Arbor, MI 48109, USA. |
| المصدر: | The Journal of experimental biology [J Exp Biol] 2024 Jul 01; Vol. 227 (13). Date of Electronic Publication: 2024 Jul 01. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Company Of Biologists Limited Country of Publication: England NLM ID: 0243705 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1477-9145 (Electronic) Linking ISSN: 00220949 NLM ISO Abbreviation: J Exp Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: London : Company Of Biologists Limited Original Publication: London, Cambridge Univ. Press. |
| مواضيع طبية MeSH: | Energy Metabolism* , Walking*/physiology, Humans ; Male ; Female ; Adult ; Biomechanical Phenomena ; Young Adult ; Gait/physiology ; Walking Speed/physiology ; Middle Aged |
| مستخلص: | Speeds that minimize energetic cost during steady-state walking have been observed during lab-based investigations of walking biomechanics and energetics. However, in real-world scenarios, humans walk in a variety of contexts that can elicit different walking strategies, and may not always prioritize minimizing energetic cost. To investigate whether individuals tend to select energetically optimal speeds in real-world situations and how contextual factors influence gait, we conducted a study combining data from lab and real-world experiments. Walking kinematics and context were measured during daily life over a week (N=17) using wearable sensors and a mobile phone. To determine context, we utilized self-reported activity logs, GPS data and follow-up exit interviews. Additionally, we estimated energetic cost using respirometry over a range of gait speeds in the lab. Gross and net cost of transport were calculated for each participant, and were used to identify energetically optimal walking speed ranges for each participant. The proportion of real-world steady-state stride speeds within these ranges (gross and net) were identified for all data and for each context. We found that energetically optimal speeds predicted by gross cost of transport were more predictive of walking speeds used during daily life than speeds that would minimize net cost of transport. On average, 82.2% of all steady-state stride speeds were energetically optimal for gross cost of transport for all contexts and participants, while only 45.6% were energetically optimal for net cost of transport. These results suggest that while energetic cost is a factor considered by humans when selecting gait speed in daily life, it is not the sole determining factor. Context contributes to the observed variability in movement parameters both within and between individuals. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2024. Published by The Company of Biologists Ltd.) |
| معلومات مُعتمدة: | Precision Health Initiative; Patricia C. Schroeder Family Fund Award |
| فهرسة مساهمة: | Keywords: Energetics; Locomotion; Optimality; Wearable sensors |
| تواريخ الأحداث: | Date Created: 20240610 Date Completed: 20240701 Latest Revision: 20240702 |
| رمز التحديث: | 20240702 |
| DOI: | 10.1242/jeb.246181 |
| PMID: | 38853583 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1477-9145 |
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| DOI: | 10.1242/jeb.246181 |