{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T14:37:53Z","timestamp":1791988673431,"version":"4.4.0"},"reference-count":33,"publisher":"Termedia Sp. z.o.o.","license":[{"start":{"date-parts":[[2023,6,5]],"date-time":"2023-06-05T00:00:00Z","timestamp":1685923200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,6,5]],"date-time":"2023-06-05T00:00:00Z","timestamp":1685923200000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,6,5]],"date-time":"2023-06-05T00:00:00Z","timestamp":1685923200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Human Kinetics"],"abstract":"<jats:p>Fluency is a movement parameter combining smoothness and hesitation, and its objective measurement may be used to determine the effects of practice on sports performance.\u00a0This study aimed to measure fluency in parkour, an acrobatic discipline comprising complex non-cyclical movements, which involves fluency as a critical aspect of performance. Inter-individual fluidity differences between advanced and novice athletes as well as intra-individual variations of fluency between different parts and subsequent repetitions of a path were addressed. Seventeen parkour participants were enrolled and divided into two groups based on their experience. We analysed signals captured from an inertial measurement unit fixed on the back of the pelvis of each participant during three consecutive repetitions of a specifically designed parkour routine under the guidance of video analysis. Two fluency parameters, namely smoothness and hesitation, were measured. Smoothness was calculated as the number of inflexions on the so-called jerk graph; hesitation was the percentage of the drop in the centre of mass velocity. Smoothness resulted in significantly lower values in advanced athletes (mean: 126.4; range: 36\u2013192) than in beginners (mean: 179.37; range: 98\u2013272) during one of the three motor activities (p = 0.02). A qualitative analysis of hesitation showed that beginner athletes tended to experience more prominent velocity drops and negative deflection than more advanced athletes. In conclusion, a system based on a video and an inertial measurement unit is a promising approach for quantification and the assessment of variability of fluency, and it is potentially beneficial to guide and evaluate the training process.<\/jats:p>","DOI":"10.5114\/jhk\/166581","type":"journal-article","created":{"date-parts":[[2023,6,23]],"date-time":"2023-06-23T13:07:50Z","timestamp":1687525670000},"source":"Crossref","is-referenced-by-count":5,"title":["Analysis of Fluency of Movement in Parkour Using a Video \nand Inertial Measurement Unit Technology"],"prefix":"10.5114","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3621-3871","authenticated-orcid":false,"given":"Francesco","family":"Feletti","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristian","family":"Bracco","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Takeko Molisso","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenzo","family":"Bova","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Aliverti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3061","published-online":{"date-parts":[[2023,6,5]]},"reference":[{"key":"ref-864503","doi-asserted-by":"publisher","DOI":"10.1080\/14763140701322994"},{"key":"ref-864504","doi-asserted-by":"publisher","DOI":"10.3390\/s18030873"},{"key":"ref-864505","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.190983"},{"key":"ref-864506","doi-asserted-by":"publisher","DOI":"10.2165\/00007256-200333040-00001"},{"key":"ref-864507","doi-asserted-by":"publisher","DOI":"10.1177\/0888439003017002002"},{"key":"ref-864508","doi-asserted-by":"publisher","DOI":"10.3390\/sports6010006"},{"key":"ref-864509","doi-asserted-by":"publisher","DOI":"10.1080\/17461391.2015.1060263"},{"key":"ref-864510","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.04-11-02745.1984"},{"key":"ref-864511","doi-asserted-by":"publisher","DOI":"10.1016\/s0966-6362(00)00045-x"},{"key":"ref-864512","doi-asserted-by":"publisher","DOI":"10.1186\/s40798-017-0084-1"},{"key":"ref-864513","unstructured":"International Gymnastics Federation. (2019). Parkour. Retrieved by: https:\/\/www.gymnastics.sport\/site\/discipline.php?disc=14 (accessed on 13 October 2020)."},{"key":"ref-864514","doi-asserted-by":"publisher","DOI":"10.7554\/eLife.04677"},{"key":"ref-864515","unstructured":"Kelso, J.A.S. (2005). Principles of\u00a0dynamic\u00a0pattern formation and change for a science of human behavior. In: Bergman, L.R., Cairns, R.B., Nilsson, L.G., Nystedt, L. (Eds.) Developmental Science and the Holistic Approach (pp. 63\u201381) LEA Publishers."},{"key":"ref-864516","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2012.09.026"},{"key":"ref-864517","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcm.2016.02.012"},{"key":"ref-864518","doi-asserted-by":"publisher","DOI":"10.2478\/hukin-2020-0036"},{"key":"ref-864519","doi-asserted-by":"publisher","DOI":"10.1007\/s40279-017-0716-0"},{"key":"ref-864520","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2842.2011.02200.x"},{"key":"ref-864521","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2011.03.014"},{"key":"ref-864522","doi-asserted-by":"crossref","unstructured":"Newell, K. M., & Vaillancourt, D. (2001). Dimensional change in motor learning. Human Movement Science, 20, 695\u2013715.","DOI":"10.1016\/S0167-9457(01)00073-2"},{"key":"ref-864523","doi-asserted-by":"crossref","unstructured":"Pansiot, J., King, R., McIlwraith, D., Lo, B., & Yang, G. (2008). ClimBSN: Climber Performance Monitoring with BSN. In: The Chinese University of Hong Kong (Ed) . IEEE proceedings of the 5th International Workshop on Wearable and Implantable Body Sensor Networks IEEE, 33\u201336.","DOI":"10.1109\/ISSMDBS.2008.4575009"},{"key":"ref-864524","unstructured":"Paulich M., Schepers M., Rudigkeit N., & Bellusci G. (2018). Xsens MTw Awinda: Miniature Wireless Inertial\u2013Magnetic Motion Tracker for Highly Accurate 3D Kinematic Applications. XSENS Technologies BV (Ed). MTW Awinda Whitepaper, \u2013 MW0404P.A."},{"key":"ref-864525","doi-asserted-by":"publisher","DOI":"10.1080\/17461391.2013.878755"},{"key":"ref-864526","doi-asserted-by":"publisher","DOI":"10.1145\/2851581.2892478"},{"key":"ref-864527","doi-asserted-by":"publisher","DOI":"10.1191\/0269215503cr607oa"},{"key":"ref-864528","doi-asserted-by":"publisher","DOI":"10.1007\/BF00207290"},{"key":"ref-864529","doi-asserted-by":"crossref","unstructured":"Seifert, L., Button, C., & Davids, K. (2013). Key Properties of Expert Movement Systems in Sport. Sports Medicine, 43, 167\u2013178. DOI 10.1007\/s40279-012-0011-z.","DOI":"10.1007\/s40279-012-0011-z"},{"key":"ref-864530","doi-asserted-by":"publisher","DOI":"10.1123\/jab.2014-0052"},{"key":"ref-864531","doi-asserted-by":"publisher","DOI":"10.1080\/02640419608727710"},{"key":"ref-864532","doi-asserted-by":"publisher","DOI":"10.1080\/17461391.2018.1463397"},{"key":"ref-864533","doi-asserted-by":"publisher","DOI":"10.1007\/s10439-014-1198-y"},{"key":"ref-864534","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2014.10.027"},{"key":"ref-864535","doi-asserted-by":"crossref","unstructured":"Young, R. P., & Marteniuk, R. G. (1997). Acquisition of a multi-articular kicking task: Jerk analysis demonstrates movements do not become smoother with learning. Human Movement Science, 16(5), 677\u2013701.","DOI":"10.1016\/S0167-9457(97)00010-9"}],"container-title":["Journal of Human Kinetics"],"original-title":[],"link":[{"URL":"https:\/\/jhk.termedia.pl\/pdf-166581-90549","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/jhk.termedia.pl\/pdf-166581-90549","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,7,6]],"date-time":"2023-07-06T06:40:29Z","timestamp":1688625629000},"score":1,"resource":{"primary":{"URL":"https:\/\/jhk.termedia.pl\/Analysis-of-Fluency-of-Movement-in-Parkour-Using-a-Video-nand-Inertial-Measurement,166581,0,2.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,6,5]]},"references-count":33,"alternative-id":["166581"],"URL":"https:\/\/doi.org\/10.5114\/jhk\/166581","relation":{},"ISSN":["1640-5544","1899-7562"],"issn-type":[{"value":"1640-5544","type":"print"},{"value":"1899-7562","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,6,5]]}}}