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Development And Validation Of Footnet; A New Kinematic Algorithm To Improve Foot-Strike And Toe-Off Detection In Treadmill Running, Adrian Rivadulla, Xi Chen, Gillian Weir, Dario Cazzola, Grant Trewartha, Joseph Hamill, Ezio Preatoni

Kinesiology Department Faculty Publication Series

The accurate detection of foot-strike and toe-off is often critical in the assessment of running biomechanics. The gold standard method for step event detection requires force data which are not always available. Although kinematics-based algorithms can also be used, their accuracy and generalisability are limited, often requiring corrections for speed or foot-strike pattern. The purpose of this study was to develop FootNet, a novel kinematics and deep learning-based algorithm for the detection of step events in treadmill running. Five treadmill running datasets were gathered and processed to obtain segment and joint kinematics, and to identify the contact phase within each …

Steps Per Day And All-Cause Mortality In Middle-Aged Adults In The Coronary Artery Risk Development In Young Adults Study, Amanda E. Paluch, Kelley P. Gabriel, Janet E. Fulton, Cora E. Lewis, Pamela J. Schreiner, Barbara Sternfeld, Stephen Sidney, Juned Siddique, Kara M. Whitaker, Mercedes R. Carnethon

Kinesiology Department Faculty Publication Series

Importance Steps per day is a meaningful metric for physical activity promotion in clinical and population settings. To guide promotion strategies of step goals, it is important to understand the association of steps with clinical end points, including mortality.

Objective To estimate the association of steps per day with premature (age 41-65 years) all-cause mortality among Black and White men and women.

Design, Setting, and Participants This prospective cohort study was part of the Coronary Artery Risk Development in Young Adults (CARDIA) study. Participants were aged 38 to 50 years and wore an accelerometer from 2005 to 2006. Participants were …

Estimated Impact Of Achieving Optimal Cardiovascular Health Among Us Adults On Cardiovascular Disease Events, Joshua D. Bundy, Zhengbao Zhu, Hongyan Ning, Victor W. Zhong, Amanda E. Paluch, John T. Wilkins, Donald M. Lloyd-Jones, Paul K. Whelton, Jiang He, Norrina B. Allen

Kinesiology Department Faculty Publication Series

Background Better cardiovascular health (CVH) scores are associated with lower risk of cardiovascular disease (CVD). However, estimates of the potential population-level impact of improving CVH on US CVD event rates are not currently available. Methods and Results Using data from the National Health and Nutrition Examination Survey 2011 to 2016 (n=11 696), we estimated the proportions of US adults in CVH groups. Levels of 7 American Heart Association CVH metrics were scored as ideal (2 points), intermediate (1 point), or poor (0 points), and summed to define overall CVH (low, 0-8 points; moderate, 9-11 points; or high, 12-14 points). Using …

Older Adults' Daily Step Counts And Time In Sedentary Behavior And Different Intensities Of Physical Activity, Shiho Amagasa, Noritoshi Fukushima, Hiroyuki Kikuchi, Koichiro Oka, Sebastien Chastin, Catrine Tudor-Locke, Neville Owen, Shigeru Inoue

Kinesiology Department Faculty Publication Series

Background: Daily step count is the simplest measure of physical activity. However, little is known about how daily step count related to time spent in different intensities of physical activity (PA) and sedentary behavior (SB). Methods: These cross-sectional data were derived from 450 older Japanese adults (56.7% men; mean age, 74.3 years) who were randomly selected from three communities and responded a survey. Daily step count and time spent in moderate-to-vigorous PA (MVPA), light-intensity PA (LPA), and SB were measured using a validated wearable technology (HJA-350IT). Associations of daily step count with time spent in measured behaviors were examined using …

Muscular Activity Patterns In 1-Legged Vs. 2-Legged Pedaling, Sangsoo Park, Graham E. Caldwell

Kinesiology Department Faculty Publication Series

Background: One-legged pedaling is of interest to elite cyclists and clinicians. However, muscular usage in 1-legged vs. 2-legged pedaling is not fully understood. Thus, the study was aimed to examine changes in leg muscle activation patterns between 2-legged and 1-legged pedaling. Methods: Fifteen healthy young recreational cyclists performed both 1-legged and 2-legged pedaling trials at about 30 Watt per leg. Surface electromyography electrodes were placed on 10 major muscles of the left leg. Linear envelope electromyography data were integrated to quantify muscle activities for each crank cycle quadrant to evaluate muscle activation changes. Results: Overall, the prescribed constant power requirements …

Youth Oriented Activity Trackers: Comprehensive Laboratory- And Field-Based Validation, John R. Sirard, Brittany Masteller, Patty Freedson, Albert Mendoza, Amanda Hickey

Kinesiology Department Faculty Publication Series

Background: Commercial activity trackers are growing in popularity among adults and some are beginning to be marketed to children. There is, however, a paucity of independent research examining the validity of these devices to detect physical activity of different intensity levels.

Objectives: The purpose of this study was to determine the validity of the output from 3 commercial youth-oriented activity trackers in 3 phases: (1) orbital shaker, (2) structured indoor activities, and (3) 4 days of free-living activity.

Methods: Four units of each activity tracker (Movband [MB], Sqord [SQ], and Zamzee [ZZ]) were tested in an orbital …

Process Evaluation Of A Culturally-Tailored Physical Activity Intervention In African-American Mother-Daughter Dyads, Sarah A. Burkart, Christine W. St. Laurent, Sofiya Alhassan

Kinesiology Department Faculty Publication Series

The purpose of this study was to describe process evaluation data including intervention fidelity, dosage, quality, participant responsiveness, and program reach for the Mothers And dauGhters daNcing togEther Trial (MAGNET) in Springfield, MA, in Spring 2013 and 2014. Seventy-six mother-daughter dyads were randomized to the mother-daughter group (CH-M, n = 28), the child-only group (CH, n = 25), or the health education group (CON, n = 23). CH-M consisted of 60 min of moderate-to-vigorous culturally-tailored dance classes for dyads. CH consisted of dance classes for the child. All groups received homework tutoring and weekly health newsletters. Process evaluation data were …

Generating Optimal Control Simulations Of Musculoskeletal Movement Using Opensim And Matlab, Leng-Feng Lee, Brian R. Umberger

Kinesiology Department Faculty Publication Series

Computer modeling, simulation and optimization are powerful tools that have seen increased use in biomechanics research. Dynamic optimizations can be categorized as either data-tracking or predictive problems. The data-tracking approach has been used extensively to address human movement problems of clinical relevance. The predictive approach also holds great promise, but has seen limited use in clinical applications. Enhanced software tools would facilitate the application of predictive musculoskeletal simulations to clinically-relevant research. The open-source software OpenSim provides tools for generating tracking simulations but not predictive simulations. However, OpenSim includes an extensive application programming interface that permits extending its capabilities with scripting …