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2012 | 31 | 17-24
Tytuł artykułu

Intra- and Inter-Instrument Reliability of the Actiwatch 4 Accelerometer in a Mechanical Laboratory Setting

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This study aimed to quantify the intra-and inter-instrument reliability of the Actiwatch 4 accelerometer (AW4) in a mechanical setting. Twenty seven AW4 were attached to an isokinetic dynamometer and subjected to angular acceleration for 30 min at 50 deg/sec representing moderate intensity (MPA condition) and 200 deg/sec representing vigorous intensity (VPA condition), with a repeat trial conducted. Reliability was assessed using coefficient of variation (CV), absolute percent error (APE), and intraclass correlation coefficients (ICC). Mean AW4 activity counts displayed acceptable reliability according to CV in both conditions (ConMPA: CVintra = 4.6%, APEintra = 6.6%, CVinter = 6.4%, APEinter = 5.2%; ConVPA: CVintra = 3.9%, APEintra = 5.6%, CVinter = 5.9%, APEinter = 4.7%). When counts were re-categorised into minutes of MPA and VPA, lower CV values were observed (ConMPA: CVintra = 3.2%, APEintra = 4.5%, CVinter = 4.3%, APEinter = 3.2%; ConVPA: CVintra = 0.0%, APEintra = 0.0%, CVinter = 0.0%, APEinter = 0.0%). When activity counts were re-categorised as minutes of MVPA, excellent reliability was observed (CVintra, APEintra, CVinter, and APEinter = 0.0%) in both conditions. Mean AW4 activity counts exhibit reliability statistics comparable to other accelerometers. Reliability is improved when activity counts are re-categorised as time spent in MPA and VPA, with greatest reliability obtained when counts are recategorised as time spent in MVPA. As MVPA is the subcomponent of physical activity most associated with health benefits it would appear that the AW4 is reliable for measuring time spent in this health enhancing intensity category, at least from testing in a mechanical laboratory setting.
Wydawca

Rocznik
Tom
31
Strony
17-24
Opis fizyczny
Daty
wydano
2012-03-01
online
2012-04-03
Twórcy
  • Institute of Sport and Exercise Science, University of Worcester, Worcester, Worcestershire, UK
  • Institute of Health and Society, University of Worcester, Worcester, Worcestershire, UK
  • Institut des Sciences Psychologiques, Université catholique de Louvain, Place du Cardinal Mercier, Louvain-la-Neuve, Belgium
autor
Bibliografia
  • Andersen LB, Nacro M, Sardinha LB, Frogberg K, Ekelund U, Brage S, Andersen SA. Physical activity and clustered cardiovascular risk in children. Lancet 2006; 368: 299-304.[PubMed][Crossref][WoS]
  • Brage S, Brage N, Wedderkopp N, Froberg K. Reliability and Validity of the Computer Science and Applications Accelerometer in a Mechanical Setting. Measurement in Physical Education and Exercise Science. 2003;7(2):101-119.
  • Cambridge Neurotechnology ltd. Information Bulletin No 4B: Actigraphy Activity and Sleep Analysis. Cambridge: 2007;V2 p. 1-20.
  • Chen KY, Bassett DR Jr. The technology of accelerometry-based activity instruments: current and future. Medicine and Science in Sports and Exercise. 2005;37:490-500.[Crossref]
  • Cohen J. Statistical power analysis for the behavioural sciences. 2nd ed. Hillsdale (NJ): Lawerence Erlbaum Associates; 1988. 20 p.
  • Corder K, Ekelund U, Steele RM, Wareham NJ, Brage S. Assessment of physical activity in youth. Journal of Applied Physiology. 2008;105:977-987.[Crossref]
  • Esliger DW, Tremblay MS. Technical reliability assessment of three accelerometer models in a mechanical setup. Medicine and Science in Sports and Exercise. 2006;38:2173-2181.[WoS][Crossref]
  • Fairweather SC, Reilly JJ, Grant S, Whittaker A, Paton JY. Using the Computer Science and Applications (CSA) Activity Monitor in Preschool Children. Pediatric Exercise Science. 1999;11:413-420.
  • Krasnoff JB, Kohn MA, Choy FKK, Choy JD, Johansen K, Painter PL. Interunit and Intraunit Reliability of the RT3 Triaxial Accelerometer, Journal of Physical Activity and Health. 2008; 5:527-538.
  • McClain JJ, Sisson SB, Tudor-Locke C. Actigraph Accelerometer Interinstrument Reliability during Free-Living in Adults. Medicine and Science in Sports and Exercise. 2007;39:1509-1514.[WoS][Crossref]
  • Metcalf BS, Curno JSH, Evans C, Voss LD, Wilkin T. Technical reliability of the CSA activity instrument: The EarlyBird Study. Medicine and Science in Sports and Exercise. 2002;34:533-1537.[WoS]
  • Ness AR, Leary SD, Mattocks C et al. Objectively Measured Physical Activity and Fat Mass in a Large Cohort of Children. PLoS Medicine. 2007;4:e97.[WoS][Crossref]
  • O'Donavon G, Blazevich AJ, Boreham C et al. The ABC of Physical Activity for Health: A consensus statement from the British Association of Sport and Exercise Sciences. 2010;28(6):573-591.
  • Powell SM, Jones DI, Rowlands AV. Technical variability of the RT3 accelerometer. Medicine and Science in Sports and Exercise. 2003;35:1773-1778.[Crossref]
  • Powell SM, Rowlands AV. Interinstrument Variability of the RT3 Accelerometer during Typical Physical Activities. Medicine and Science in Sports and Exercise. 2004;36:324-330.
  • Puyau, MR, Adolph, AL, Vohra, FA, Butte, NF. Validation and calibration of physical activity monitors in children. Obesity Research. 2002; 10: 150-157.[PubMed][Crossref]
  • Puyau MR, Adolph AL, Vohra FA, Zaker I, Butte NF. Prediction of activity energy expenditure using accelerometers in children. Medicine and Science in Sports and Exercise. 2004;36:1625-1631.[WoS]
  • Rowlands AV. Accelerometer Assessment of Physical Activity in Children: An Update. Pediatric Exercise Science. 2007;19: 252-266.
  • Skalik K, Frömel K, Stelze J, Pelclova J, Groffik D. The influence of increased intensity levels on the attitude of high school females toward aerobic dance lessons. Journal of Human Kinetics. 2009;22:99-105.
  • Trost SG, McIver KL, Pate RR. Conducting accelerometer-based activity assessments in field-based research. Medicine and Science in Sports and Exercise. 2005;37: 531-543.[Crossref]
  • Ward DS, Evenson KR, Vaughn A, Rodgers AB, Troiano RP. Accelerometer use in physical activity: best practices and research recommendations. Medicine and Science in Sports and Exercise. 2005;37: 582-588.[WoS][Crossref]
  • Welk GJ. Principles of design and analyses for the calibration of accelerometry-based activity instruments. Medicine and Science in Sports and Exercise. 2005;37: 501-511.[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_v10078-012-0002-z
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