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Exercise Opens a Temporal Window for Enhanced Cognitive Improvement from Subsequent Physical Activity

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Title: Exercise Opens a Temporal Window for Enhanced Cognitive Improvement from Subsequent Physical Activity
Language: English
Authors: Butler, Christopher W., Keiser, Ashley A., Kwapis, Janine L., Berchtold, Nicole C., Wall, Vanessa L., Wood, Marcelo A., Cotman, Carl W.
Source: Learning & Memory. Dec 2019 26(12):485-492.
Availability: Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
Peer Reviewed: Y
Page Count: 8
Publication Date: 2019
Document Type: Journal Articles
Reports - Evaluative
Descriptors: Exercise, Cognitive Development, Physical Activities, Memory, Animals, Neurology
DOI: 10.1101/lm.050278.119
ISSN: 1072-0502
Abstract: The beneficial effects of exercise on cognition are well established; however specific exercise parameters regarding the frequency and duration of physical activity that provide optimal cognitive health have not been well defined. Here, we explore the effects of the duration of exercise and sedentary periods on long-term object location memory (OLM) in mice. We use a weak object location training paradigm that is subthreshold for long-term memory formation in sedentary controls, and demonstrate that exercise enables long-term memories to form. We show that 14- and 21-d of running wheel access enables mice to discriminate between familiar and novel object locations after a 24 h delay, while 2- or 7-d running wheel access provides insufficient exercise for such memory enhancement using the subthreshold learning paradigm. After 14- and 21-d of wheel running, exercise-induced cognitive enhancement then decays back to baseline performance following 3-d of sedentary activity. However, exercise-induced cognitive enhancement can be reactivated by an additional period of just 2 d exercise, previously shown to be insufficient to induce cognitive enhancement on its own. The reactivating period of exercise is capable of enhancing memory after three- or seven-sedentary days, but not 14-d. These data suggest a type of "molecular memory" for the exercise stimulus, in that once exercise duration reaches a certain threshold, it establishes a temporal window during which subsequent low-level exercise can capitalize on the neurobiological adaptations induced by the initial period of exercise, enabling it to maintain the benefits on cognitive function. These findings provide new information that may help to guide future clinical studies in exercise.
Abstractor: As Provided
Entry Date: 2019
Accession Number: EJ1237970
Database: ERIC
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  Data: <searchLink fieldCode="SO" term="%22Learning+%26+Memory%22"><i>Learning & Memory</i></searchLink>. Dec 2019 26(12):485-492.
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  Data: Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
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  Data: 10.1101/lm.050278.119
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  Data: The beneficial effects of exercise on cognition are well established; however specific exercise parameters regarding the frequency and duration of physical activity that provide optimal cognitive health have not been well defined. Here, we explore the effects of the duration of exercise and sedentary periods on long-term object location memory (OLM) in mice. We use a weak object location training paradigm that is subthreshold for long-term memory formation in sedentary controls, and demonstrate that exercise enables long-term memories to form. We show that 14- and 21-d of running wheel access enables mice to discriminate between familiar and novel object locations after a 24 h delay, while 2- or 7-d running wheel access provides insufficient exercise for such memory enhancement using the subthreshold learning paradigm. After 14- and 21-d of wheel running, exercise-induced cognitive enhancement then decays back to baseline performance following 3-d of sedentary activity. However, exercise-induced cognitive enhancement can be reactivated by an additional period of just 2 d exercise, previously shown to be insufficient to induce cognitive enhancement on its own. The reactivating period of exercise is capable of enhancing memory after three- or seven-sedentary days, but not 14-d. These data suggest a type of "molecular memory" for the exercise stimulus, in that once exercise duration reaches a certain threshold, it establishes a temporal window during which subsequent low-level exercise can capitalize on the neurobiological adaptations induced by the initial period of exercise, enabling it to maintain the benefits on cognitive function. These findings provide new information that may help to guide future clinical studies in exercise.
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