that monitor performance is unaffected by improper placement of monitors on the body. Otherwise, compromised monitor performance due to position could be mistaken for monitor step count inaccuracy. Currently, the impact of varied placement sites on daily step counts is unknown. Therefore, we examined
Susan Park, Lindsay P. Toth, Scott E. Crouter, Cary M. Springer, Robert T. Marcotte and David R. Bassett
Jaclyn Megan Sions, Elisa Sarah Arch and John Robert Horne
is, pedometers and accelerometers, with varied weight, size, cost, commercial availability, and data resolution, have been shown to be reliable 28 and valid 29 , 30 for objectively assessing daily step counts among individuals with lower-limb amputations. Accelerometers, electromechanical devices
Jane M. Shimon and Linda M. Petlichkoff
The aim of this study was to determine the impact of pedometer use and self-regulation strategies on adolescents’ daily physical activity.
Junior high school students (n = 113) enrolled in seventh- and eighth-grade physical education classes (52 girls, 61 boys) volunteered to participate in a 5-week study to assess daily step counts. Ten physical education classes were randomly assigned to 1 of 3 groups: (a) self-regulation, (b) open, and (c) control.
A repeated-measures, mixed-model analysis of variance revealed a significant 3 × 4 (Group by Time) interaction effect, F6,290 = 2.64, P < .02. Follow-up analyses indicated participants in the self-regulation group took 2071 to 4141 more steps/d than the control. No other significant differences emerged among groups on step counts.
It appears that having access to and charting daily step counts (ie, self-regulatory strategies) positively influenced young adolescents to attain a higher number of steps/d.
Georgina Trapp, Billie Giles-Corti, Hayley Christian, Anna Timperio, Gavin McCormack, Max Bulsara and Karen Villanueva
This study investigated whether being driven to school was associated with lower weekday and weekend step counts, less active out-of-school leisure pursuits, and more sedentary behavior. Boys aged 10–13 years (n = 384) and girls aged 9–13 years (n = 500) attending 25 Australian primary schools wore a pedometer and completed a travel diary for one week. Parents and children completed surveys capturing leisure activity, screen time, and sociodemographics. Commute distance was objectively measured. Car travel was the most frequent mode of school transportation (boys: 51%, girls: 58%). After adjustment (sociodemographics, commute distance, and school clustering) children who were driven recorded fewer weekday steps than those who walked (girls: −1,393 steps p < .001, boys: −1,569 steps, p = .009) and participated in fewer active leisure activities (girls only: p = .043). There were no differences in weekend steps or screen time. Being driven to and from school is associated with less weekday pedometer-determined physical activity in 9- to 13-year-old elementary-school children. Encouraging children, especially girls, to walk to and from school (even for part of the way for those living further distances) could protect the health and well-being of those children who are insufficiently active.
David A. Rowe, Charles D. Kemble, Terrance S. Robinson and Matthew T. Mahar
To determine the day-to-day variability of older adults’ physical activity, and to evaluate the accuracy of the 10,000-step goal for classifying whether older adults obtain 30 min of MVPA.
Ninety-one adults ages over 60 y wore a Yamax pedometer and Actigraph accelerometer for 7 days. Interday reliability was estimated via two-way ANOVA ICCs, and classification accuracy was evaluated via sensitivity, specificity, and ROC curve analysis.
Interday reliability was high; four of five outcome measures had a reliability of ≥.80 with only 2 days of data. The 10,000-step cut point had high accuracy for identifying days with less than 30 min of MVPA, but poor accuracy for identifying days with more than 30 min of MVPA.
Day-to-day variability in physical activity is lower in older adults than other age groups. The 10,000-step goal is inadequate for determining whether daily physical activity includes 30 min of MVPA in this population.
Kristen Holm, Holly Wyatt, James Murphy, James Hill and Lorraine Odgen
This study examined the association between parent and child change in physical activity during a family-based intervention for child weight gain prevention.
Daily step counts were recorded for parents and children in 83 families given a goal to increase activity by 2000 steps per day above baseline. Linear mixed effects models were used to predict child change in daily step counts from parental change in step counts.
Both maternal (P < .0001) and paternal (P < .0001) change in step counts for the current day strongly predicted child change in step counts for that day. On average, a child took an additional 2117.6 steps above baseline on days his or her mother met her goal versus 1175.2 additional steps when the mother did not meet her goal. The respective values were 1598.0 versus 1123.1 steps for fathers. Day of week moderated the maternal effect (P = .0019), with a larger impact on Saturday and Sunday compared with weekdays. A similar but nonsignificant pattern was observed for fathers.
Encouraging parents to increase physical activity, particularly on weekends, may be a highly effective way to leverage parental involvement in interventions to increase children’s physical activity.
Rebecca A. Abbott, Doune Macdonald, Smita Nambiar and Peter S.W. Davies
Objective measurement of daily steps was used to assess whether children (n = 2,076) in Years 1, 5 and 10 who reported walking to or from school were more active and more likely to reach recommended step targets than those who were driven or took public transport to school. Walking to school was associated with higher school-day steps in older children (16,238 vs 15,275 for Year 5 male p < .05, 13,521 vs 12,502 for Year 5 female p < .01, 12,109 vs 11,373 for Year 10 female p < .05). The proportion of children who met recommended step thresholds was higher in those who walked to school compared with those who took motorized transport, and this was significant for Year 5 females (71.7% vs 54.5%, p < .01). This study suggests that walking to school for older children has potential to contribute significantly to daily activity levels and increases the likelihood of attaining recommended step targets. These data should encourage public policy and those concerned with the built environment to provide and support opportunities for walking to school.
Greet Cardon and Ilse De Bourdeaudhuij
In this study, daily step counts were recorded for 4 consecutive days in 129 four- and five-year-old children. To compare daily Yamax Digiwalker step counts with minutes of engagement in moderate to vigorous physical activity (MVPA), concurrent accelerometer data were collected in a random subsample (n = 76). The average daily step count was 9,980 (± 2,605). Step counts and MVPA minutes were strongly correlated (r = .73, p < .001). The daily step count of 13,874, equating to 1-hr MVPA engagement, was reached by 8% of the children. Daily step counts in preschool children give valid information on physical activity levels—daily step counts in preschoolers are low.
Brian M. Wood, Herman Pontzer, Jacob A. Harris, Audax Z.P. Mabulla, Marc T. Hamilton, Theodore W. Zderic, Bret A. Beheim and David A. Raichlen
societies ( Pontzer et al., 2012 ; Raichlen et al., 2016 ). In the largest global database of pedestrian travel that we are aware of ( Althoff, Hicks, King, Delp, & Leskovec, 2017 ), daily step counts representing the pedestrian travel of 717,527 people in 111 nations are recorded. To build a comparison
Timothy A. Brusseau, Pamela H. Kulinna, Catrine Tudor-Locke and Matthew Ferry
Embracing a physically active lifestyle is especially important for American Indian (AI) children who are at a greater risk for hypokinetic diseases, particularly Type 2 diabetes. The purpose of this study was to describe AI children’s pedometer-determined physical activity (PA) segmented into prominent daily activity patterns.
Participants included 5th- and 6th-grade children (N = 77) attending school from 1 Southwestern US AI community. Children wore a pedometer (Yamax Digiwalker SW-200) for 7 consecutive days.
Boys accumulated 12,621 (±5385) steps/weekday and girls accumulated 11,640 (±3695) steps/weekday of which 38% (4,779 ± 1271) and 35% (4,027 ± 1285) were accumulated at school for boys and girls, respectively. Physical education (PE) provided the single largest source of PA during school for both boys (25% or 3117 steps/day) and girls (23% or 2638 steps/day). Lunchtime recess provided 1612 (13%) and 1241 (11%) steps/day for boys and girls, respectively. Children were significantly less active on weekend days, accumulating 8066 ± 1959 (boys) and 6676 ± 1884 (girls).
Although children accumulate a majority of their steps outside of school, this study highlights the important contribution of PE to the overall PA accumulation of children living in AI communities. Further, PA programming during the weekend appears to be important for this population.