Validity of Physical Activity Monitors in Assessing Energy Expenditure in Normal, Overweight, and Obese Adults

Swartz, Ann M.; Strath, Scott J.; Miller, Nora E.; Grimm, Elizabeth K.; Ewalt, Lauren A.; Loy, Michael S.; Gennuso, Keith P.

doi:10.2174/1875399x00902010058

Cited by 11 publications

(29 citation statements)

References 10 publications

(11 reference statements)

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“…Pedometers are economically feasible for use in large studies and the use and validity of them in physical activity research has been systematically reviewed (Corder et al 2007;De Vries et al 2009;Tudor-Locke et al 2002) by comparing the results of different brands (Ayabe et al 2008;Basset et al 1996Basset et al , 2000Beets et al 2005;Crouter et al 2003Crouter et al , 2005Doyle et al 2007;Le Masurier et al 2004;Melanson et al 2004;Nakae et al 2008;Schneider et al 2004;Swartz et al 2009) and by examining the accuracy of step taken (Ayabe et al 2008;Basset et al 1996;Crouter et al 2003Crouter et al , 2005Doyle et al 2007;Holbrook et al 2009;Le Masurier and Tudor-Locke 2003;Le Masurier et al 2004;Nakae et al 2008;Rowlands et al 2007), distance traveled (Basset et al 1996;Crouter et al 2003;Karabulut and Crouter 2005;Schneider et al 2003), and energy expenditure (Bassett et al 2008;Crouter et al 2003;Nelson et al 1998;Swartz et al 2009). There are plenty of studies which examined the accuracy, reliability, and validity of using pedometers in adults and children population (Ayabe et al 2008;Basset et al 1996Basset et al , 2000Beets et al 2005;<...>…”

Section: Introductionmentioning

confidence: 99%

“…There are plenty of studies which examined the accuracy, reliability, and validity of using pedometers in adults and children population (Ayabe et al 2008;Basset et al 1996Basset et al , 2000Beets et al 2005;Crouter et al 2003;De Vries et al 2009;Doyle et al 2007;Nakae et al 2008;Schneider et al 2003Schneider et al , 2004 and in obese and non-obese population Hasson et al 2009;Holbrook et al 2009;Le Masurier et al 2004;Melanson et al 2004;Swartz et al 2009, found that 8-10 electronic pedometers were considered accurate in measuring steps. The accuracy of pedometers depends on the level of the speed.…”

Section: Introductionmentioning

confidence: 99%

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The validity of two Omron pedometers during treadmill walking is speed dependent

et al. 2011

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The purpose of this study was to examine the effects of walking speed on the accuracy of measurement of steps, distance, and energy expenditure of two commercially available Omron pedometers [HJ-720IT-E2 (HJ-720) and HJ-113-E (HJ-113)]. Twenty-four untrained males (age, 22.7 ± 2.8 years; BMI, 24.38 ± 2.19 kg m(-2); body fat (%), 16 ± 2.2; VO(2max), 40.2 ± 6.5 ml kg(-1) min(-1)) and 18 females (age, 22.4 ± 2.9 years; BMI, 21.68 ± 2.43 kg m(-2); body fat (%), 23% ± 1.8; VO(2max), 35.9 ± 2.8 ml kg(-1) min(-1)) walked at five different velocities (54, 67, 80, 94 and 107 m min(-1)) on a treadmill in 5-min stages while wearing three types of pedometers: (a) HJ-720, (b) HJ-113, and (c) Yamax Digi-Walker SW-200 (YAM). Step-count for each pedometer was recorded at the end of each stage and compared with the value of a hand counter. Additionally, Omron pedometers were evaluated on their distance and energy expenditure (against VO(2) measurement with a gas-exchange analyzer) accuracy during each stage. HJ-720 and HJ-113 demonstrated high accuracy (r = 0.80-0.99) at all speeds. YAM underestimated step-count only at 54 m min(-1) (r = 0.46). HJ-720 and HJ-113 overestimated distance at slower speeds and underestimated distance at faster speeds, providing mean distance values that where to within 1.5-4% at 80 m min(-1). HJ-720 and HJ-113 underestimated energy expenditure (gross kilocalories) by 28%, when compared to indirect calorimetry. These results suggest that although the Omron HJ-720 and HJ-113 pedometers are accurate in the measurement of step-count, they demonstrate limited accuracy in the assessment of traveled distance and energy expenditure in a speed-dependent manner.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The validity of two Omron pedometers during treadmill walking is speed dependent

et al. 2011

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“…There has been some conflicting reports of the effect of waist adiposity on the tilt angle of the monitor, and consequently on the output of some activity devices (Swartz et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Empirically derived cut-points for sedentary behaviour: are we sitting differently?

Clarke-Cornwell¹,

Farragher²,

Cook³

et al. 2016

Physiol. Meas.

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Purpose: Sedentary behaviour (SB) is associated with a number of adverse health outcomes.Studies that have used accelerometers to define sedentary time tend to use a threshold of <100 counts per minute (cpm) for classifying SB; however, this cut-point was not empirically derived for adults. It is not known whether accelerometer cut-points for SB differ depending on the context in which it occurs. We aimed to: 1) empirically derive an optimal threshold for classifying SB, using the cpm output from the ActiGraph GT3X+, compared to the sedentary classification from the activPAL3™; and 2) ascertain whether this varied by day of the week and in working time versus non-working time.Methods: A convenience sample of 30 office-based university employees (10 males, 20 females; age 40.47±10.95 years; BMI 23.93±2.46 kg/m2) wore the ActiGraph GT3X+ and activPAL3™ devices simultaneously for seven days. Data were downloaded in one minute epochs and non-wear time was removed. Generalised estimating equations were used to make minute by minute comparisons of sedentary time from the two devices, using sitting from the activPAL3™ as the criterion measure. Results:After data reduction participants provided on average 11 hours 58 minutes of data per day. The derived cut-points from the models were significantly higher on a Saturday (97cpm) compared to weekdays (60cpm) and Sunday (57cpm). Derived cpm for sedentary time during working time were significantly lower compared to non-working time (35)(36)(37)(38)(39)(40)(41)). Compared to the 100cpm and 150cpm thresholds, the empirically derived cut-points were not significantly different in terms of area-under-thecurve, but had lower mean bias for each day of the week and for working and non-working times. Conclusion:Accelerometer cut-points for SB can depend on day and also domain, suggesting that the nature of sitting differs depending on the context in which sedentary time is accrued.

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“…Crouter et al [18] reported that the mean numbers of steps generated by six of 10 pedometers fluctuated within ±1% of the actual numbers of steps at 80, 94 and 107 m/min, and five of these were manufactured in Japan. Schneider et al [25] determined the accuracy and reliability of 10 pedometers for measuring steps over a 400-m distance. They found that the Japanese pedometers were the most accurate, being within ±3% of the actual steps.…”

Section: Discussionmentioning

confidence: 99%

“…The OMRON HJ-720 and HJ-113 pedometers speed-dependently underestimate energy expenditure measured as kilocalories by up to 28% [16]. Conversely, the OMRON HJ-700IT pedometer tends to overestimate energy expenditure at various speeds [25]. Crouter et al [18] found that eight pedometers generated higher-than-average amounts of expended calories compared with actual values.…”

Section: Introductionmentioning

confidence: 98%

Comparison of Accuracy Among Pedometers from Five Japanese Manufacturers

Osawa¹,

Tabuchi²,

Nemoto³

et al. 2013

TOSSJ

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Abstract:The reliability of commercially available pedometers is not known in detail. Therefore, the present study examines the accuracy and reliability of the FS500 (Acos), HJ301 (Omron), EX700 (Yamax), FB727 (Tanita) and TW600 (Citizen) pedometers to count steps and measure energy expenditure at various walking speeds. Twenty individuals (age, 32.5 ± 15.3 years; body mass index, 22.0 ± 1.6 kg/m 2 ) walked at three speeds for 6 min.Step-counts and energy expenditure determined by each pedometer were compared with actual values. All five pedometers accurately measured steps at all speeds, but tended to underestimate expended calories to within 50% of the actual amount of energy expenditure. The correlation coefficients (R) between actual energy expenditure and pedometer values were between 0.74 and 0.87. Thus, feedback about energy expenditure is somewhat inaccurate. In contrast, step counts are very accurate, and thus pedometers are useful tools with which to indicate daily exercise levels.

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Validity of Physical Activity Monitors in Assessing Energy Expenditure in Normal, Overweight, and Obese Adults

Cited by 11 publications

References 10 publications

The validity of two Omron pedometers during treadmill walking is speed dependent

The validity of two Omron pedometers during treadmill walking is speed dependent

Empirically derived cut-points for sedentary behaviour: are we sitting differently?

Comparison of Accuracy Among Pedometers from Five Japanese Manufacturers

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