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- W2132305651 abstract "The objective of this study was to determine the validity of the Walk4Life model MVP 4Function Digital Pedometer for measuring moderate to vigorous physical activity(MVPA). Sixty-five (38 female, 27 male) college students, age 18 years and older (Mage = 20.17 years, SD = 4.08), volunteered for the study. Preliminary data collectionincluded age, resting heart rate, height, body weight, body mass index (BMI), and gender.Each participant wore a pedometer and a Polar model T31 heart rate monitor to determinetheir MVPA steps per minute (SPM) threshold and to measure their heart rates during thetreadmill tests. Manual and pedometer step counts were repeated and compared for 40(17 male, 23 female) participants to establish step count accuracy and reliability indetermining SPM. MVPA pedometer recordings were compared to the amount of timespent in their MVPA heart rate zone. The System for Observing Fitness Instruction Time(SOFIT) (McKenzie, Sallis, & Nader, 1991) instrument was used to code MVPA timeduring a Disc Lacrosse activity lesson and compared to MVPA pedometer readingsduring the direct observation portion of the study. Manually counted step counts did notsignificantly differ from pedometer recorded counts (p = .30), and pedometer recordedcounts from the repeated trials were strongly and positively correlated (r = .99). Pedometers tended to overestimate MVPA at lower speeds (M Absolute Error (AE) = -26.55) and underestimate MVPA at higher speeds (M AE= 23.53) during the treadmilltests. Neither gender (p= .721) nor BMI (p= .664) had a significant effect on absoluteerror. Pedometer estimates of MVPA significantly differed from that of the SOFIT (p=.012). Results yielded a significant effect for gender (p= .020) and BMI (p= .041) duringdirect observation. Walk4Life MVP pedometers are accurate and reliable for measuringsteps, but may not be recommended for use by researchers to measure MVPA time due toestimation errors. Practitioners may find these pedometers useful for estimating MVPAbecause they are less arduous than direct observation methods such as the SOFIT." @default.
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- W2132305651 date "2011-01-01" @default.
- W2132305651 modified "2023-09-27" @default.
- W2132305651 title "Validation of moderate-to-vigorous physical activity pedometers" @default.
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