Behavioral Studies


Predicting energy expenditure of physical activity using hip- and wrist-worn accelerometers

Abstract To investigate the association between physical activity and health, we need accurate and detailed free-living physical activity measurements. The determination of energy expenditure of activity (EEACT) may also be useful in the treatment and maintenance of nutritional diseases such as diabetes mellitus. Minute-to-minute energy expenditure during a 24-h period was measured in 60 sedentary […]

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Haploinsufficiency of the E3 Ubiquitin Ligase C-Terminus of Heat Shock Cognate 70 Interacting Protein (CHIP) Produces Specific Behavioral Impairments

The multifunctional E3 ubiquitin ligase CHIP is an essential interacting partner of HSP70, which together promote the proteasomal degradation of client proteins. Acute CHIP overexpression provides neuroprotection against neurotoxic mitochondrial stress, glucocorticoids, and accumulation of toxic amyloid fragments, as well as genetic mutations in other E3 ligases, which have been shown to result in familial […]

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Assessment of locomotion in chlorine exposed mice by computer vision and neural networks

… These measurements were repeated with air breathing mice. Peripheral oxygen saturation was assessed periodically with a MouseOx pulse oximeter equipped with a neck collar according to manufacturer instructions (STARR Lifesciences.). Video capture and acquisition. … Assessment of locomotion following exposure of animals to noxious or painful stimuli can offer significant insights into underlying mechanisms […]

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Sleep assessments in healthy school-aged children using actigraphy: concordance with polysomnography

Abstract Actigraphic (ACT) recordings are used widely in schoolchildren as a less intrusive and more extended approach to evaluation of sleep problems. However, critical assessment of the validity and reliability of ACT against overnight polysomnography (NPSG) are unavailable. Thus, we explored the degree of concordance between NPSG and ACT in school-aged children to delineate potential […]

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Evaluation of immobility time for sleep latency in actigraphy

Abstract BACKGROUND: Actigraphy has become an important tool in sleep research, however, most actigraphic models have had little evaluation of their sleep scoring software. Some reports have described poor agreement of actigraph and polysomnogram (PSG) results. In this study, we examined the accuracy of the Actiwatch-L instrument with Actiware((R)) software version 5.0 (Minimitter-Respironics, Bend, Oregon). […]

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Supplemental feedings increase self-selected work output during wildfire suppression

Abstract PURPOSE: The purpose of this study was to determine the impact of supplemental feeding strategies on self-selected activity during wildland fire suppression. METHODS: Seventy-six wildland firefighters were studied in three experiments for three fire seasons. During the first two seasons, subjects consumed, in addition to their sack lunch, 1) liquid carbohydrate (CHO) (200 mL.h, […]

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