Evidence map›Paper›PMID 34426495›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Clock proteins and training modify exercise capacity in a daytime-dependent manner.

Yaarit Adamovich, Vaishnavi Dandavate, Saar Ezagouri, Gal Manella, Ziv Zwighaft, Jonathan Sobel, Yael Kuperman, Marina Golik, Asher Auerbach, Maxim Itkin and 2 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.9field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 48 citations in OpenAlex.

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  9. HIF1α mediates circadian regulation of skeletal muscle metabolism and substrate preference in response to time-of-day exercise.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  13. Diurnal variation in skeletal muscle mitochondrial function dictates time-of-day-dependent exercise capacity.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 1 institution in 1 country.

Yaarit AdamovichDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0001-9583-0338
Vaishnavi DandavateDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0002-5893-3546
Saar EzagouriDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.
Gal ManellaDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0002-2642-3568
Ziv ZwighaftDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.
Jonathan SobelDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.
Yael KupermanDepartment of Veterinary Resources, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0003-3830-1856
Marina GolikDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0001-8384-1582
Asher AuerbachDepartment of Chemical Research Support, Weizmann Institute of Science, 7610001 Rehovot, Israel.
Maxim ItkinDepartment of Life Sciences Core Facilities, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0003-1348-2814
Sergey MalitskyDepartment of Life Sciences Core Facilities, Weizmann Institute of Science, 7610001 Rehovot, Israel.ORCID 0000-0003-4619-7219
Gad AsherDepartment of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel; gad.asher@weizmann.ac.il.
Weizmann Institute of Science · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Exercise and circadian biology are closely intertwined with physiology and metabolism, yet the functional interaction between circadian clocks and exercise capacity is only partially characterized. Here, we tested different clock mutant mouse models to examine the effect of the circadian clock and clock proteins, namely PERIODs and BMAL1, on exercise capacity. We found that daytime variance in endurance exercise capacity is circadian clock controlled. Unlike wild-type mice, which outperform in the late compared with the early part of their active phase, PERIODs- and BMAL1-null mice do not show daytime variance in exercise capacity. It appears that BMAL1 impairs and PERIODs enhance exercise capacity in a daytime-dependent manner. An analysis of liver and muscle glycogen stores as well as muscle lipid utilization suggested that these daytime effects mostly relate to liver glycogen levels and correspond to the animals' feeding behavior. Furthermore, given that exercise capacity responds to training, we tested the effect of training at different times of the day and found that training in the late compared with the early part of the active phase improves exercise performance. Overall, our findings suggest that clock proteins shape exercise capacity in a daytime-dependent manner through changes in liver glycogen levels, likely due to their effect on animals' feeding behavior.

Indexed as

AnimalsARNTL Transcription FactorsCLOCK ProteinsExercise ToleranceFeeding BehaviorFemaleLightLiver GlycogenMaleMiceMice, Inbred C57BLMusclesMutationPeriod Circadian ProteinsPhotoperiodPhysical Conditioning, AnimalARNTL Transcription FactorsBmal1 protein, mouseCLOCK ProteinsLiver GlycogenPeriod Circadian Proteinscircadian clocksexerciseglycogenmetabolismtraining

Identifiers

PMID34426495
PMCPMC8536342
OpenAlexW3194217062

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.