Abstract：
PURPOSE:First evidence suggests that chronobiological aspects of sleep restriction affect metabolic conditions. Our aim was to investigate whether spontaneous free-living physical activity likewise is affected by chronobiological timing of short sleep. METHODS:In an experimental randomized, balanced cross-over design, eleven healthy, normal-weight (BMI: 23.9 ± 0.4 kg/m2) men were evaluated. Physical activity was assessed by tri-axial wrist actigraphy after (i) four-hour sleep during the first night-half of the night ('late night sleep loss'), (ii) four-hour sleep during the second night-half ('early night sleep loss'), and (iii) eight-hour regular sleep ('regular sleep'), from 7:00 to 24:00 (17 h). Feelings of tiredness and activity were measured by semi-quantitative questionnaires. RESULTS:Physical activity differed between sleep conditions (P < 0.05) with the lowest physical activity after 'late night sleep loss'. Accordingly, less time was spent in high-intensity physical activity after 'late night sleep loss' as compared to the 'early night sleep loss' and 'regular sleep' conditions (both P < 0.05). Perceived feelings of tiredness were higher after both short sleep conditions as compared to 'regular sleep' (both P < 0.05). CONCLUSIONS:Sleep restriction during the second half of the night elicits stronger effects on spontaneous physical activity than sleep restriction during the first half of the night despite identical sleep duration, but the impact of longer period awake needs to be evaluated in further research. In sum, these data indicate that not only short sleep per se but also chronobiological aspects modulate physical activity pattern.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Wilms B,Kuhr M,Chamorro R,Klinsmann N,Spyra D,Mölle M,Kalscheuer H,Schultes B,Lehnert H,Schmid SMdoi
10.1016/j.physbeh.2019.112795subject
Has Abstractpub_date
2020-03-01 00:00:00pages
112795eissn
0031-9384issn
1873-507Xpii
S0031-9384(19)30663-8journal_volume
215pub_type
杂志文章abstract：:Isatin is an endogenous indole present in mammalian tissues and fluids. This study was designed to test the effect of both acute stress (AS) and gender on isatin's levels in rat serum, heart and brain, using a HPLC-UV detection method. Basal brain isatin levels were higher in females than in males. AS resulted in incr...
journal_title：Physiology & behavior
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journal_title：Physiology & behavior
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abstract：:Sheep and goats differ in diet selection, which may reflect different abilities to deal with the ingestion of plant secondary metabolites. Although saliva provides a basis for immediate oral information via sensory cues and also a mechanism for detoxification, our understanding of the role of saliva in the pre-gastric...
journal_title：Physiology & behavior
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