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AuthorMhenni, Thouraya
AuthorSouissi, Amine
AuthorTayech, Amel
AuthorYousfi, Narimen
AuthorMejri, Mohamed Arbi
AuthorChamari, Karim
AuthorSouissi, Nizar
AuthorKhlifa, Riadh
AuthorHaddad, Monoem
Available date2023-10-23T10:25:28Z
Publication Date2021
Publication NameChronobiology International
ResourceScopus
URIhttp://dx.doi.org/10.1080/07420528.2021.1932994
URIhttp://hdl.handle.net/10576/48755
AbstractThe purpose of this study was to explore the effect of time of day (TD) on two types of exercise protocols [continuous (CP) versus alternated (AP)]. Eleven physical education students (mean ± SD: age = 24.4 ± 1.2 years, aerobic peak power (APP) = 290 ± 31.9 W) underwent four sessions. These sessions were performed at 08:00 (AM) and 18:00 (PM) and consisted of cycling exercises until voluntary exhaustion at 90% APP (CP) or 70%-105% APP (AP) with the order of testing randomly assigned. Time to exhaustion (time limit = Tlim) was measured from the start of the test to when voluntary exhaustion occurred. Heart rate (HR) was recorded at baseline (HRbaseline) and throughout the protocols to determine HR at exhaustion (HRpeak). Blood lactate ([La]) was measured at rest, immediately after exhaustion and at 2min30 post-exercise to determine [La]peak. A significantly higher means of Tlim (334 ± 57 s; 272 ± 59 s; p< 0.05), HRbaseline (72 ± 5 beats/min; 67 ± 5 beats/min; p< 0.01), HRpeak (186 ± 8 beats/min; 178 ± 9 beats/min; p< 0.01) and [La]peak (16.2 ± 2.1 mmol/l; 13.9 ± 1.9 mmol/l; p< 0.05) were observed in CP at the PM compared to the AM. In addition, a significant higher means of Tlim (380 ± 54 s; 312 ± 82 s; p< 0.05), HRbaseline (73.1 ± 5.5 beats/min; 67 ± 5.4 beats/min; p< 0.01), HRpeak (186 ± 8 beats/min; 180 ± 9 beats/min; p< 0.05) and [La]peak (17.9 ± 1.8 mmol/l; 14.7 ± 2.1 mmol/l; p< 0.01) were observed in AP at the PM compared to the AM. It is concluded that AP and CP are more appropriate in the late afternoon than in the morning for performing long-lasting exercises. The AP could be a novel strategy for increasing the engagement in physical activity. Copyright: © 2020 Souissi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
SponsorThis study was supported by The Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sports (CNMSS).
Languageen
PublisherTaylor and Francis Ltd.
Subjectball-throwing velocity
Diurnal variation
matches
oral temperature
physical performance
sprint
TitleThe effect of Ramadan fasting on the morning-evening difference in team-handball-related short-term maximal physical performances in elite female team-handball players
TypeArticle
Pagination1488-1499
Issue Number10
Volume Number38
dc.accessType Abstract Only


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