Quantitative and qualitative assessment of human movement during exercising using inertial and magnetic sensors

doctoral thesis

• Title (croatian): Kvantitativna i kvalitativna procjena ljudskoga pokreta tijekom tjelovježbe uporabom inercijskih i magnetskih senzora
• Author: Dominik Džaja; MBZ: 357240
• Mentor: Ratko Magjarević (mentor)
• Committee member: Igor Lacković (predsjednik povjerenstva)
• Committee member: Mario Cifrek (član povjerenstva)
• Committee member: Goran Sporiš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Electronic Systems and Information Processing); Zagreb
• Defense date and country: 2023-05-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Wearable devices equipped with inertial and magnetic sensors are increasingly being employed for the monitoring and assessment of physical activity. The affordability, accuracy, and portability of such devices enable real-time monitoring of human movement during exercise, without requiring direct supervision by a trained professional. Furthermore, the data collected by these devices can be analyzed over time, providing valuable insights into an individual's patterns of physical activity and progress. While the initial interest focused mainly on aerobic exercises, research has recently begun to focus on strength exercises as well. The challenges researchers are facing with are primarily related to the minimization of the number and position of wearable devices on individual human body segments and the development of algorithms that will provide appropriate assessment and feedback. Addressing existing limitations and aiming for simplicity, generalizability and reliability, this thesis presents a comprehensive procedure for quantitative and qualitative monitoring of exercise performance, along with a measurement method for assessing human movement variability and movement execution metrics. The proposed method enables the detection, counting, and segmentation of repetitive movements during strength exercises without requiring prior knowledge of the specific exercise being performed. Additionally, the newly developed movement execution metric can identify incorrect repetitions during strength training exercises and distinguishing between experienced and inexperienced individuals. The scientific contributions are: Measurement method of human movement variability during exercise using sensor nodes with inertial and magnetic sensors, Movement execution metrics during exercise based on measurements using sensor nodes with inertial and magnetic sensors, Procedure for quantitative and qualitative monitoring of exercise performance using sensor nodes with inertial and magnetic sensors and measurement of heart rate.

Abstract (croatian)

Nosivi uređaji opremljeni inercijskim i magnetskim senzorima sve se više koriste za praćenje i procjenu fizičke aktivnosti. Pristupačnost, točnost i prenosivost takvih uređaja omogućuju praćenje ljudskih pokreta tijekom tjelovježbe u stvarnom vremenu, bez potrebe za izravnim nadzorom stručnjaka. Nadalje, tako prikupljeni podaci mogu se analizirati tijekom vremena, pružajući vrijedne uvide u obrasce fizičke aktivnosti i napredak pojedinca. Iako je početni interes istraživačkih grupa uglavnom bio usmjeren na aerobne vježbe, istraživanja su se nedavno počela usmjeravati i na vježbe snage. Izazovi s kojima se istraživači suočavaju primarno su vezani uz minimiziranje broja i položaja nosivih uređaja na pojedinim dijelovima tijela te razvoj algoritama koji će pružiti odgovarajuću procjenu i povratne informacije. Imajući na umu postojeća ograničenja i težeći jednostavnosti, generaliziranosti i pouzdanosti, ova disertacija predstavlja sveobuhvatan postupak za kvantitativno i kvalitativno praćenje izvedbe vježbanja, zajedno s mjernom metodom za procjenu varijabilnosti ljudskog pokreta i metrikom izvođenja pokreta. Predložena metoda omogućuje detekciju, brojanje i segmentaciju ponavljajućih pokreta tijekom vježbi snage, bez potrebe za prethodnim poznavanjem specifične vježbe koja se izvodi. Također, novo razvijena metrika može identificirati neispravna ponavljanja tijekom vježbi snage te razlikovati iskusne i neiskusne pojedince. Ostvareni znanstveni doprinosi su: Metoda mjerenja varijabilnosti ljudskog pokreta tijekom tjelovježbe uporabom senzorskih čvorova s inercijskim i magnetskim senzorima, Metrika izvođenja pokreta tijekom tjelovježbe temeljena na mjerenjima senzorskim čvorovima s inercijskim i magnetskim senzorima, Postupak kvantitativnog i kvalitativnog praćenja uspješnosti vježbanja uporabom senzorskih čvorova s inercijskim i magnetskim senzorima i mjerenjem frekvencije srčanog ritma.

• Keywords: wearable devices; strength exercises; repetition segmentation; repetition classification; quantitative assessment; qualitative assessment; human movement monitoring
• Keywords (croatian): nosivi uređaji; vježbe snage; segmentacija ponavljanja; klasifikacija ponavljanja; kvantitativna procjena; kvalitativna procjena; praćenje ljudskog pokreta
• Language: english
• URN:NBN: urn:nbn:hr:168:903772
• Promotion: 2023
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Type of resource: Text
• Extent: 149 str. : graf. prikazi ; 31 cm.
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-06-26 13:36:16