PMID- 29580135
OWN - NLM
STAT- MEDLINE
DCOM- 20190701
LR  - 20190701
IS  - 1543-5474 (Electronic)
IS  - 1543-3080 (Linking)
VI  - 15
IP  - 7
DP  - 2018 Jul 1
TI  - Understanding the Nature of Measurement Error When Estimating Energy Expenditure 
      and Physical Activity via Physical Activity Recall.
PG  - 543-549
LID - 10.1123/jpah.2017-0089 [doi]
AB  - BACKGROUND: The National Health and Nutrition Examination Survey physical 
      activity questionnaire (PAQ) is used to estimate activity energy expenditure 
      (AEE) and moderate to vigorous physical activity (MVPA). Bias and variance in 
      estimates of AEE and MVPA from the PAQ have not been described, nor the impact of 
      measurement error when utilizing the PAQ to predict biomarkers and categorize 
      individuals. METHODS: The PAQ was administered to 385 adults to estimate AEE 
      (AEE:PAQ) and MVPA (MVPA:PAQ), while simultaneously measuring AEE with doubly 
      labeled water (DLW; AEE:DLW) and MVPA with an accelerometer (MVPA:A). RESULTS: 
      Although AEE:PAQ [3.4 (2.2) MJ.d(-1)] was not significantly different from 
      AEE:DLW [3.6 (1.6) MJ.d(-1); P > .14], MVPA:PAQ [36.2 (24.4) min.d(-1)] was 
      significantly higher than MVPA:A [8.0 (10.4) min.d(-1); P < .0001]. AEE:PAQ 
      regressed on AEE:DLW and MVPA:PAQ regressed on MVPA:A yielded not only 
      significant positive relationships but also large residual variances. The 
      relationships between AEE and MVPA, and 10 of the 12 biomarkers were 
      underestimated by the PAQ. When compared with accelerometers, the PAQ 
      overestimated the number of participants who met the Physical Activity Guidelines 
      for Americans. CONCLUSIONS: Group-level bias in AEE:PAQ was small, but large for 
      MVPA:PAQ. Poor within-participant estimates of AEE:PAQ and MVPA:PAQ lead to 
      attenuated relationships with biomarkers and misclassifications of participants 
      who met or who did not meet the Physical Activity Guidelines for Americans.
FAU - Paul, David R
AU  - Paul DR
FAU - McGrath, Ryan
AU  - McGrath R
FAU - Vella, Chantal A
AU  - Vella CA
FAU - Kramer, Matthew
AU  - Kramer M
FAU - Baer, David J
AU  - Baer DJ
FAU - Moshfegh, Alanna J
AU  - Moshfegh AJ
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20180326
PL  - United States
TA  - J Phys Act Health
JT  - Journal of physical activity & health
JID - 101189457
RN  - 0 (Biomarkers)
SB  - IM
MH  - Adult
MH  - Biomarkers/analysis
MH  - Energy Metabolism/*physiology
MH  - Exercise/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Nutrition Surveys
MH  - Scientific Experimental Error/*statistics & numerical data
MH  - Self Report/*statistics & numerical data
MH  - Young Adult
OTO - NOTNLM
OT  - accelerometry
OT  - epidemiology
OT  - physical activity assessment
EDAT- 2018/03/28 06:00
MHDA- 2019/07/02 06:00
CRDT- 2018/03/28 06:00
PHST- 2018/03/28 06:00 [pubmed]
PHST- 2019/07/02 06:00 [medline]
PHST- 2018/03/28 06:00 [entrez]
AID - 10.1123/jpah.2017-0089 [doi]
PST - ppublish
SO  - J Phys Act Health. 2018 Jul 1;15(7):543-549. doi: 10.1123/jpah.2017-0089. Epub 
      2018 Mar 26.