Low validity of the Sensewear Pro3 activity monitor compared to indirect calorimetry during simulated free living in patients with osteoarthritis of the hip
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Low validity of the Sensewear Pro3 activity monitor compared to indirect calorimetry during simulated free living in patients with osteoarthritis of the hip. / Hermann, Andreas; Ried-Larsen, Mathias; Jensen, Andreas Emil Kryger; Holst, René; Andersen, Lars Bo; Overgaard, Søren; Holsgaard-Larsen, Anders.
In: BMC Musculoskeletal Disorders, Vol. 15, 43, 2014, p. 1-8.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Low validity of the Sensewear Pro3 activity monitor compared to indirect calorimetry during simulated free living in patients with osteoarthritis of the hip
AU - Hermann, Andreas
AU - Ried-Larsen, Mathias
AU - Jensen, Andreas Emil Kryger
AU - Holst, René
AU - Andersen, Lars Bo
AU - Overgaard, Søren
AU - Holsgaard-Larsen, Anders
PY - 2014
Y1 - 2014
N2 - BACKGROUND: To validate physical activity estimates by the Sensewear Pro3 activity monitor compared with indirect calorimetry during simulated free living in patients diagnosed with osteoarthritis of the hip pre or post total hip arthroplasty.METHODS: Twenty patients diagnosed with hip osteoarthritis (10 pre- and 10 post total hip arthroplasty; 40% female; age: 63.3 ± 9.0; BMI: 23.7 ± 3.7). All patients completed a 2 hour protocol of simulated free living with 8 different typical physical activity types. Energy consumption (kcal/min) was estimated by the Sense Wear pro3 Armband activity monitor and validated against indirect calorimetry (criterion method) by means of a portable unit (Cosmed K4b2). Bias and variance was analyzed using functional ANOVA.RESULTS: Mean bias during all activities was 1.5 Kcal/min 95%CI [1.3; 1.8] corresponding to 72% (overestimation). Normal gait speed showed an overestimation of 2.8 Kcal/min, 95%CI [2.3; 3.3] (93%) while an underestimation of -1.1 Kcal/min, 95%CI [-1.8; -0.3] (-25%) was recorded during stair climb. Activities dominated by upper body movements showed large overestimation with 4.37 Kcal/min, 95%CI [3.8; 5.1] (170%) being recorded during gardening. Both bias and variance appeared to be dependent on activity type.CONCLUSION: The activity monitor generally overestimated the energy consumption during common activities of low to medium intensity in the patient group. The size and direction of the bias was highly dependent on the activity type which indicates the activity monitor is of limited value in patients with hip osteoarthritis and that the results do not express the real energy expenditure.
AB - BACKGROUND: To validate physical activity estimates by the Sensewear Pro3 activity monitor compared with indirect calorimetry during simulated free living in patients diagnosed with osteoarthritis of the hip pre or post total hip arthroplasty.METHODS: Twenty patients diagnosed with hip osteoarthritis (10 pre- and 10 post total hip arthroplasty; 40% female; age: 63.3 ± 9.0; BMI: 23.7 ± 3.7). All patients completed a 2 hour protocol of simulated free living with 8 different typical physical activity types. Energy consumption (kcal/min) was estimated by the Sense Wear pro3 Armband activity monitor and validated against indirect calorimetry (criterion method) by means of a portable unit (Cosmed K4b2). Bias and variance was analyzed using functional ANOVA.RESULTS: Mean bias during all activities was 1.5 Kcal/min 95%CI [1.3; 1.8] corresponding to 72% (overestimation). Normal gait speed showed an overestimation of 2.8 Kcal/min, 95%CI [2.3; 3.3] (93%) while an underestimation of -1.1 Kcal/min, 95%CI [-1.8; -0.3] (-25%) was recorded during stair climb. Activities dominated by upper body movements showed large overestimation with 4.37 Kcal/min, 95%CI [3.8; 5.1] (170%) being recorded during gardening. Both bias and variance appeared to be dependent on activity type.CONCLUSION: The activity monitor generally overestimated the energy consumption during common activities of low to medium intensity in the patient group. The size and direction of the bias was highly dependent on the activity type which indicates the activity monitor is of limited value in patients with hip osteoarthritis and that the results do not express the real energy expenditure.
KW - Accelerometry
KW - Activities of Daily Living
KW - Aged
KW - Algorithms
KW - Arthroplasty, Replacement, Hip
KW - Calorimetry, Indirect
KW - Energy Metabolism
KW - Female
KW - Galvanic Skin Response
KW - Humans
KW - Male
KW - Middle Aged
KW - Osteoarthritis, Hip
KW - Reproducibility of Results
KW - Skin Temperature
KW - Walking
U2 - 10.1186/1471-2474-15-43
DO - 10.1186/1471-2474-15-43
M3 - Journal article
C2 - 24552503
VL - 15
SP - 1
EP - 8
JO - B M C Musculoskeletal Disorders
JF - B M C Musculoskeletal Disorders
SN - 1471-2474
M1 - 43
ER -
ID: 138354544