François Fraysse1, Dannielle Post1, Roger Eston1, Daiki Kasai1, Alex V Rowlands2,3, Gaynor Parfitt1. 1. Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia. 2. National Institute for Health Research Leicester Biomedical Research Centre, Leicester, United Kingdom. 3. Diabetes Research Centre, University of Leicester, Leicester, United Kingdom.
Abstract
Purpose: This study aims to (1) establish GENEActiv intensity cutpoints in older adults and (2) compare the classification accuracy between dominant (D) or non-dominant (ND) wrist, using both laboratory and free-living data. Methods: Thirty-one older adults participated in the study. They wore a GENEActiv Original on each wrist and performed nine activities of daily living. A portable gas analyzer was used to measure energy expenditure for each task. Testing was performed on two occasions separated by at least 8 days. Some of the same participants (n = 13) also wore one device on each wrist during 3 days of free-living. Receiver operating characteristic analysis was performed to establish the optimal cutpoints. Results: For sedentary time, both dominant and non-dominant wrist had excellent classification accuracy (sensitivity 0.99 and 0.97, respectively; specificity 0.91 and 0.86, respectively). For Moderate to Vigorous Physical Activity (MVPA), the non-dominant wrist device had better accuracy (ND sensitivity: 0.90, specificity 0.79; D sensitivity: 0.90, specificity 0.64). The corresponding cutpoints for sedentary-to-light were 255 and 375 g · min (epoch independent: 42.5 and 62.5 mg), and those for the light-to-moderate were 588 and 555 g · min (epoch-independent: 98.0 and 92.5 mg) for the non-dominant and dominant wrist, respectively. For free-living data, the dominant wrist device resulted in significantly more sedentary time and significantly less light and MVPA time compared to the non-dominant wrist.
Purpose: This study aims to (1) establish GENEActiv intensity cutpoints in older adults and (2) compare the classification accuracy between dominant (D) or non-dominant (ND) wrist, using both laboratory and free-living data. Methods: Thirty-one older adults participated in the study. They wore a GENEActiv Original on each wrist and performed nine activities of daily living. A portable gas analyzer was used to measure energy expenditure for each task. Testing was performed on two occasions separated by at least 8 days. Some of the same participants (n = 13) also wore one device on each wrist during 3 days of free-living. Receiver operating characteristic analysis was performed to establish the optimal cutpoints. Results: For sedentary time, both dominant and non-dominant wrist had excellent classification accuracy (sensitivity 0.99 and 0.97, respectively; specificity 0.91 and 0.86, respectively). For Moderate to Vigorous Physical Activity (MVPA), the non-dominant wrist device had better accuracy (ND sensitivity: 0.90, specificity 0.79; D sensitivity: 0.90, specificity 0.64). The corresponding cutpoints for sedentary-to-light were 255 and 375 g · min (epoch independent: 42.5 and 62.5 mg), and those for the light-to-moderate were 588 and 555 g · min (epoch-independent: 98.0 and 92.5 mg) for the non-dominant and dominant wrist, respectively. For free-living data, the dominant wrist device resulted in significantly more sedentary time and significantly less light and MVPA time compared to the non-dominant wrist.
Authors: Manasa Shanta Yerramalla; Vincent T van Hees; Mathilde Chen; Aurore Fayosse; Sebastien F M Chastin; Séverine Sabia Journal: J Gerontol A Biol Sci Med Sci Date: 2022-04-01 Impact factor: 6.053
Authors: Manasa S Yerramalla; Duncan E McGregor; Vincent T van Hees; Aurore Fayosse; Aline Dugravot; Adam G Tabak; Mathilde Chen; Sebastien F M Chastin; Séverine Sabia Journal: Int J Behav Nutr Phys Act Date: 2021-07-12 Impact factor: 6.457
Authors: Jairo H Migueles; Cristina Cadenas-Sanchez; Juan M A Alcantara; Javier Leal-Martín; Asier Mañas; Ignacio Ara; Nancy W Glynn; Eric J Shiroma Journal: Sensors (Basel) Date: 2021-05-11 Impact factor: 3.576