期刊
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
卷 42, 期 2, 页码 368-374出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/MSS.0b013e3181b3af49
关键词
ACCELEROMETRY; ACTIVITY COUNTS; OBJECTIVE MONITORING; PHYSICAL ACTIVITY
资金
- National Institutes of Health [R21CA122430]
JOHN, D., B. TYO, and D. R. BASSETT. Comparison of Four ActiGraph Accelerometers during Walking and Running. Med. Sci. Sports Exerc., Vol. 42, No. 2, pp. 368-374 2010. Currently, researchers can use the ActiGraph 7164 or one of three different versions of the ActiGraph GT I M to objectively measure physical activity. Purpose: To determine whether differences exist between activity ;counts from the ActiGraph 7164 and the three versions of the GT1M at given walking and running speeds. Methods: Tell male participants (23.6 +/- 2.7 yr) completed treadmill walking and running at 10 different speeds (3-min stages) while wearing the ActiGraph 7164 and the latest GT1M (GT1M-V3) or the GT1M version one (GT1M-V1) and the GT1M version two (GT1M-V2). Participants walked at 3. 5, and 7 km.h(-1) followed by running at 8, 10 12 14, 16, 18, and 20 km.h(-1). The accelerometers were worn oil an elastic belt around the waist over the left and fight sides of the hip. Testing was performed on different days using a counterbalanced within-subjects design to account for potential differences attributable to accelerometer placement. At each speed, a one-way repeated-measures ANOVA was used to examine differences between activity counts in counts per minute (cpm). Post hoc pairwise comparisons with Bonferroni adjustments were used where appropriate. Results: There were no significant differences between activity counts at any given walking or running speed (P < 0.05). At all running speeds, activity counts from the ActiGraph 7164 and GT1M-V2 displayed the lowest and highest values, respectively. Output from all accelerometers peaked at 14 km.h(-1) (mean range = 8974 +/- 677 to 9412 +/- 982 cpm) and then gradually declined at higher speeds. The mean difference score at peak output between the ActiGraph as 7164 and GT1M-V2 was 439 565 cpm. Conclusions: There were no statistically significant differences between outputs from all the accelerometers, indicating that researchers can select any of the four ActiGraph accelerometers in doing research.
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