EFFECT OF TIME-OF-DAY ON BIOCHEMICAL MARKERS IN RESPONSE TO PHYSICAL EXERCISE

Abstract

Abstract Ammar, A, Chtourou, H, and Souissi, N. Effect of time-of-day on biochemical markers in response to physical exercise. J Strength Cond Res 31(1): 272–282, 2017—It is well established that many physiological functions are time-of-day (TOD) dependent, and their circadian rhythms are well documented in healthy populations at resting state. In fact, greater rate of oxidative stress, white blood cell, homocysteine, and muscle damage markers were shown in the early evening (≈18:00 hours), and more efficient antioxidant activity was observed in the early morning (≈06:00 hours). During physical tasks, the majority of the above-mentioned physiological functions increase from pre to post physical exercise with different rates of increases from morning to evening. These different rates of increases are suggested to alter the physiological resting diurnal variation. In this context, given the possible significant interaction “TOD × physical exercise,” circadian rhythms of the physiological responses during physical activity are still not well established in trained subjects. Otherwise, it was suggested that the diurnal variation of these biochemical parameters could, in part, explain the typical diurnal fluctuation of physical performance. Therefore, the aim of this review was to summarize the currently available studies investigating the circadian rhythms of physiological functions at rest and after physical exercise and to establish their possible effect on the diurnal variation of sport performance. Although studies in this field are limited, the available information shows that compared with sedentary subjects, trained population maintained similar diurnal variations of hematological parameters, homocysteine, and some biochemical markers at rest and even after physical exercise. However, after strength exercises, the circadian rhythms for the majority of oxidative stress and muscle damage markers were altered because of the higher rate of increased pre-post exercises registered in the morning compared with the afternoon and evening. The available studies reveal that the significant circadian variation observed for sport performances could be more likely explained by the alteration of ionic movement and the diurnal fluctuation of homocysteine, lactate, muscle damage, and antioxidant markers.

Autoren

Achraf Ammar
Hamdi Chtourou
Nizar Souissi

DOI

10.1519/jsc.0000000000001481

ISSN

1064-8011

Ausgabe der Veröffentlichung

1

Zeitschrift

Journal of Strength and Conditioning Research

Sprache

en

Paginierung

272 - 282

Datum der Veröffentlichung

2017

Status

Published

Herausgeber

Ovid Technologies (Wolters Kluwer Health)

Herausgeber URL

http://dx.doi.org/10.1519/jsc.0000000000001481

Datum der Datenerfassung

2023

Titel

Effect of Time-of-Day on Biochemical Markers in Response to Physical Exercise

Ausgabe der Zeitschrift

31

Data source: Crossref

Abstract

Ammar, A, Chtourou, H, and Souissi, N. Effect of time-of-day on biochemical markers in response to physical exercise. J Strength Cond Res 31(1): 272-282, 2017-It is well established that many physiological functions are time-of-day (TOD) dependent, and their circadian rhythms are well documented in healthy populations at resting state. In fact, greater rate of oxidative stress, white blood cell, homocysteine, and muscle damage markers were shown in the early evening (≈18:00 hours), and more efficient antioxidant activity was observed in the early morning (≈06:00 hours). During physical tasks, the majority of the above-mentioned physiological functions increase from pre to post physical exercise with different rates of increases from morning to evening. These different rates of increases are suggested to alter the physiological resting diurnal variation. In this context, given the possible significant interaction "TOD × physical exercise," circadian rhythms of the physiological responses during physical activity are still not well established in trained subjects. Otherwise, it was suggested that the diurnal variation of these biochemical parameters could, in part, explain the typical diurnal fluctuation of physical performance. Therefore, the aim of this review was to summarize the currently available studies investigating the circadian rhythms of physiological functions at rest and after physical exercise and to establish their possible effect on the diurnal variation of sport performance. Although studies in this field are limited, the available information shows that compared with sedentary subjects, trained population maintained similar diurnal variations of hematological parameters, homocysteine, and some biochemical markers at rest and even after physical exercise. However, after strength exercises, the circadian rhythms for the majority of oxidative stress and muscle damage markers were altered because of the higher rate of increased pre-post exercises registered in the morning compared with the afternoon and evening. The available studies reveal that the significant circadian variation observed for sport performances could be more likely explained by the alteration of ionic movement and the diurnal fluctuation of homocysteine, lactate, muscle damage, and antioxidant markers.

Addresses

1Research Unit, Education, Motricity, Sport and Health, UR15JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia; 2Institute of Sport Science, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany; and 3Research Laboratory, "Sports Performance Optimization," National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.

Autoren

Achraf Ammar
Hamdi Chtourou
Nizar Souissi

DOI

10.1519/jsc.0000000000001481

eISSN

1533-4287

Externe Identifier

PubMed Identifier: 27191691

Open access

false

ISSN

1064-8011

Ausgabe der Veröffentlichung

1

Zeitschrift

Journal of strength and conditioning research

Schlüsselwörter

Humans
Hematologic Tests
Exercise
Circadian Rhythm
Sports
Rest
Athletic Performance
Biomarkers

Sprache

eng

Medium

Print

Paginierung

272 - 282

Datum der Veröffentlichung

2017

Status

Published

Datum der Datenerfassung

2016

Titel

Effect of Time-of-Day on Biochemical Markers in Response to Physical Exercise.

Sub types

Review
Journal Article

Ausgabe der Zeitschrift

31

Data source: Europe PubMed Central

Abstract

Ammar, A, Chtourou, H, and Souissi, N. Effect of time-of-day on biochemical markers in response to physical exercise. J Strength Cond Res 31(1): 272-282, 2017-It is well established that many physiological functions are time-of-day (TOD) dependent, and their circadian rhythms are well documented in healthy populations at resting state. In fact, greater rate of oxidative stress, white blood cell, homocysteine, and muscle damage markers were shown in the early evening (≈18:00 hours), and more efficient antioxidant activity was observed in the early morning (≈06:00 hours). During physical tasks, the majority of the above-mentioned physiological functions increase from pre to post physical exercise with different rates of increases from morning to evening. These different rates of increases are suggested to alter the physiological resting diurnal variation. In this context, given the possible significant interaction "TOD × physical exercise," circadian rhythms of the physiological responses during physical activity are still not well established in trained subjects. Otherwise, it was suggested that the diurnal variation of these biochemical parameters could, in part, explain the typical diurnal fluctuation of physical performance. Therefore, the aim of this review was to summarize the currently available studies investigating the circadian rhythms of physiological functions at rest and after physical exercise and to establish their possible effect on the diurnal variation of sport performance. Although studies in this field are limited, the available information shows that compared with sedentary subjects, trained population maintained similar diurnal variations of hematological parameters, homocysteine, and some biochemical markers at rest and even after physical exercise. However, after strength exercises, the circadian rhythms for the majority of oxidative stress and muscle damage markers were altered because of the higher rate of increased pre-post exercises registered in the morning compared with the afternoon and evening. The available studies reveal that the significant circadian variation observed for sport performances could be more likely explained by the alteration of ionic movement and the diurnal fluctuation of homocysteine, lactate, muscle damage, and antioxidant markers.

Autoren

Achraf Ammar
Hamdi Chtourou
Nizar Souissi

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/27191691

DOI

10.1519/JSC.0000000000001481

eISSN

1533-4287

Ausgabe der Veröffentlichung

1

Zeitschrift

J Strength Cond Res

Schlüsselwörter

Athletic Performance
Biomarkers
Circadian Rhythm
Exercise
Hematologic Tests
Humans
Rest
Sports

Sprache

eng

Country

United States

Paginierung

272 - 282

Datum der Veröffentlichung

2017

Status

Published

Datum, an dem der Datensatz öffentlich gemacht wurde

2017

Titel

Effect of Time-of-Day on Biochemical Markers in Response to Physical Exercise.

Sub types

Journal Article
Review

Ausgabe der Zeitschrift

31

Data source: PubMed

EFFECT OF TIME-OF-DAY ON BIOCHEMICAL MARKERS IN RESPONSE TO PHYSICAL EXERCISE

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