A Cycling Movement Based System for Real-Time Muscle Fatigue and Cardiac Stress Monitoring and Analysis
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Mendeley | Further Information

{"title"=>"A Cycling Movement Based System for Real-Time Muscle Fatigue and Cardiac Stress Monitoring and Analysis", "type"=>"journal", "authors"=>[{"first_name"=>"Szi-Wen", "last_name"=>"Chen"}, {"first_name"=>"Jiunn-Woei", "last_name"=>"Liaw"}, {"first_name"=>"Ya-Ju", "last_name"=>"Chang"}, {"first_name"=>"Hsiao-Lung", "last_name"=>"Chan"}, {"first_name"=>"Li-Yu", "last_name"=>"Chiu"}], "year"=>2015, "source"=>"PLOS ONE", "identifiers"=>{"issn"=>"1932-6203", "pmid"=>"26115515", "doi"=>"10.1371/journal.pone.0130798"}, "id"=>"00e89797-bc93-3555-afce-c82a2873c3ae", "abstract"=>"In this study, we defined a new parameter, referred to as the cardiac stress index (CSI), using a nonlinear detrended fluctuation analysis (DFA) of heart rate (HR). Our study aimed to incorporate the CSI into a cycling based fatigue monitoring system developed in our previous work so the muscle fatigue and cardiac stress can be both continuously and quantitatively assessed for subjects undergoing the cycling exercise. By collecting electrocardiogram (ECG) signals, the DFA scaling exponent α was evaluated on the RR time series extracted from a windowed ECG segment. We then obtained the running estimate of α by shifting a one-minute window by a step of 20 seconds so the CSI, defined as the percentage of all the less-than-one α values, can be synchronously updated every 20 seconds. Since the rating of perceived exertion (RPE) scale is considered as a convenient index which is commonly used to monitor subjective perceived exercise intensity, we then related the Borg RPE scale value to the CSI in order to investigate and quantitatively characterize the relationship between exercise-induced fatigue and cardiac stress. Twenty-two young healthy participants were recruited in our study. Each participant was asked to maintain a fixed pedaling speed at a constant load during the cycling exercise. Experimental results showed that a decrease in DFA scaling exponent α or an increase in CSI was observed during the exercise. In addition, the Borg RPE scale and CSI were positively correlated, suggesting that the factors due to cardiac stress might also contribute to fatigue state during physical exercise. Since the CSI can effectively quantify the cardiac stress status during physical exercise, our system may be used in sports medicine, or used by cardiologists who carried out stress tests for monitoring heart condition in patients with heart diseases.", "link"=>"http://www.mendeley.com/research/cycling-movement-based-system-realtime-muscle-fatigue-cardiac-stress-monitoring-analysis", "reader_count"=>23, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>2, "Student > Doctoral Student"=>2, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1, "Other"=>1, "Student > Master"=>5, "Student > Bachelor"=>5, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Researcher"=>2, "Student > Doctoral Student"=>2, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1, "Other"=>1, "Student > Master"=>5, "Student > Bachelor"=>5, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>5, "Unspecified"=>2, "Biochemistry, Genetics and Molecular Biology"=>1, "Nursing and Health Professions"=>2, "Medicine and Dentistry"=>3, "Neuroscience"=>2, "Arts and Humanities"=>1, "Sports and Recreations"=>5, "Psychology"=>2}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>5}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>3}, "Neuroscience"=>{"Neuroscience"=>2}, "Sports and Recreations"=>{"Sports and Recreations"=>5}, "Psychology"=>{"Psychology"=>2}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>2}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>2}, "Arts and Humanities"=>{"Arts and Humanities"=>1}}, "reader_count_by_country"=>{"United Kingdom"=>1}, "group_count"=>4}

Scopus | Further Information

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Figshare

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  • {"files"=>["https://ndownloader.figshare.com/files/2153134"], "description"=>"<p>Mean CSI values evaluated over all the subjects at the four stages of the cycling movement.</p>", "links"=>[], "tags"=>["nonlinear detrended fluctuation analysis", "hr", "csi", "fatigue monitoring system", "dfa", "20 seconds", "Cardiac Stress Monitoring", "windowed ECG segment", "cycling exercise", "RR time series", "stress", "monitoring heart condition", "Borg RPE scale", "Borg RPE scale value"], "article_id"=>1466370, "categories"=>["Uncategorised"], "users"=>["Szi-Wen Chen", "Jiunn-Woei Liaw", "Ya-Ju Chang", "Hsiao-Lung Chan", "Li-Yu Chiu"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0130798.g010", "stats"=>{"downloads"=>2, "page_views"=>18, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Mean_CSI_values_evaluated_over_all_the_subjects_at_the_four_stages_of_the_cycling_movement_/1466370", "title"=>"Mean CSI values evaluated over all the subjects at the four stages of the cycling movement.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-06-26 04:44:18"}
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Relative Metric

{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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