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Ramadan fasting does not adversely affect neuromuscular performances and reaction times in trained karate athletes.

Zarrouk N, Hammouda O, Latiri I, Adala H, Bouhlel E, Rebai H, Dogui M - J Int Soc Sports Nutr (2016)

Bottom Line: However, neither body mass nor body mass index was altered by RIF (F (2,14) = 0.80, p = 0.47 and F (2,14) = 0.78, p = 0.48, respectively).In addition, T lim (F (2,14) = 2.53, p = 0.12), MVC (F (2,14) = 0.51, p = 0.61) and associated electrical activity (F (2,14) = 0.13, p = 0.88) as well as neuromuscular efficiency (F (2,14) = 0.27, p = 0.76) were maintained during RIF.The present results showed that RIF did not adversely affect the neuromuscular performances and anthropometric parameters of elite karate athletes who were undertaking their usual training schedule.

View Article: PubMed Central - PubMed

Affiliation: Research Laboratory: "Medical Imaging Technologies" (LR 12ES06, TIM), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia ; Research Unit: "Education, Motricity, Sports and Health" (UR 15JS01), Higher Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.

ABSTRACT

Background: The present study aimed to investigate the concomitant effects of Ramadan intermittent fast (RIF) and muscle fatigue on neuromuscular performances and reaction times in young trained athletes.

Methods: Eight karate players (17.2 ± 0.5 years) were tested on three sessions: during a control period (S1: one week before Ramadan), and during the first (S2) and the fourth week of RIF (S3). Dietary intake and anthropometric measurements were assessed before each session. During each test session, participants performed maximal voluntary isometric contractions (MVC) and a submaximal contraction at 75 % MVC until exhaustion (T lim ) of the right elbow flexors. Surface electromyography was recorded from biceps brachii muscle during MVC and T lim . Simple (SRT) and choice (CRT) reaction times were evaluated at rest and just after T lim in a random order.

Results: The total daily energy (S2: +19.5 %, p < 0.05; S3: +27.4 %, p < 0.01) and water (S2: +26.8 %, p < 0.01; S3: +23.2 %, p < 0.05) intake were significantly increased during RIF. However, neither body mass nor body mass index was altered by RIF (F (2,14) = 0.80, p = 0.47 and F (2,14) = 0.78, p = 0.48, respectively). In addition, T lim (F (2,14) = 2.53, p = 0.12), MVC (F (2,14) = 0.51, p = 0.61) and associated electrical activity (F (2,14) = 0.13, p = 0.88) as well as neuromuscular efficiency (F (2,14) = 0.27, p = 0.76) were maintained during RIF. Moreover, neither SRT nor CRT was affected by RIF (F (2,14) = 1.82, p = 0.19 and F (2,14) = 0.26, p = 0.78, respectively) or neuromuscular fatigue (F (1,7) = 0.0002, p = 0.98 and F (1,7) = 3.78, p = 0.09, respectively).

Conclusions: The present results showed that RIF did not adversely affect the neuromuscular performances and anthropometric parameters of elite karate athletes who were undertaking their usual training schedule. In addition, neither RIF nor neuromuscular fatigue poorly affects reaction times in elite karate athletes.

No MeSH data available.


Related in: MedlinePlus

Mean values (± SD) of the choice reaction time (CRT) evaluated at rest (Pre) and after (Post) the isometric muscle endurance task before Ramadan (S1), in the first week of Ramadan (S2), and in the fourth week of Ramadan (S3)
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Fig3: Mean values (± SD) of the choice reaction time (CRT) evaluated at rest (Pre) and after (Post) the isometric muscle endurance task before Ramadan (S1), in the first week of Ramadan (S2), and in the fourth week of Ramadan (S3)

Mentions: The two-way ANOVA showed that the isometric sub-maximal elbow flexion had no effect on SRT (F(1,7) = 0.0002, p = 0.98; Fig. 2) or CRT (F(1,7) = 3.78, p = 0.09; Fig. 3) during any of the three sessions. In addition, there was no significant effect of RIF on SRT (F(2,14) = 1.82, p = 0.19; Fig. 2) or CRT (F(2,14) = 0.26, p = 0.78; Fig. 3) both at rest and after the isometric muscle endurance task without any significant interaction Sessions × pre/post exercise (SRT: F(2,14) = 1.14, p = 0.35; CRT: F(2,14) = 0.48, p = 0.63).Fig. 2


Ramadan fasting does not adversely affect neuromuscular performances and reaction times in trained karate athletes.

Zarrouk N, Hammouda O, Latiri I, Adala H, Bouhlel E, Rebai H, Dogui M - J Int Soc Sports Nutr (2016)

Mean values (± SD) of the choice reaction time (CRT) evaluated at rest (Pre) and after (Post) the isometric muscle endurance task before Ramadan (S1), in the first week of Ramadan (S2), and in the fourth week of Ramadan (S3)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4837563&req=5

Fig3: Mean values (± SD) of the choice reaction time (CRT) evaluated at rest (Pre) and after (Post) the isometric muscle endurance task before Ramadan (S1), in the first week of Ramadan (S2), and in the fourth week of Ramadan (S3)
Mentions: The two-way ANOVA showed that the isometric sub-maximal elbow flexion had no effect on SRT (F(1,7) = 0.0002, p = 0.98; Fig. 2) or CRT (F(1,7) = 3.78, p = 0.09; Fig. 3) during any of the three sessions. In addition, there was no significant effect of RIF on SRT (F(2,14) = 1.82, p = 0.19; Fig. 2) or CRT (F(2,14) = 0.26, p = 0.78; Fig. 3) both at rest and after the isometric muscle endurance task without any significant interaction Sessions × pre/post exercise (SRT: F(2,14) = 1.14, p = 0.35; CRT: F(2,14) = 0.48, p = 0.63).Fig. 2

Bottom Line: However, neither body mass nor body mass index was altered by RIF (F (2,14) = 0.80, p = 0.47 and F (2,14) = 0.78, p = 0.48, respectively).In addition, T lim (F (2,14) = 2.53, p = 0.12), MVC (F (2,14) = 0.51, p = 0.61) and associated electrical activity (F (2,14) = 0.13, p = 0.88) as well as neuromuscular efficiency (F (2,14) = 0.27, p = 0.76) were maintained during RIF.The present results showed that RIF did not adversely affect the neuromuscular performances and anthropometric parameters of elite karate athletes who were undertaking their usual training schedule.

View Article: PubMed Central - PubMed

Affiliation: Research Laboratory: "Medical Imaging Technologies" (LR 12ES06, TIM), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia ; Research Unit: "Education, Motricity, Sports and Health" (UR 15JS01), Higher Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.

ABSTRACT

Background: The present study aimed to investigate the concomitant effects of Ramadan intermittent fast (RIF) and muscle fatigue on neuromuscular performances and reaction times in young trained athletes.

Methods: Eight karate players (17.2 ± 0.5 years) were tested on three sessions: during a control period (S1: one week before Ramadan), and during the first (S2) and the fourth week of RIF (S3). Dietary intake and anthropometric measurements were assessed before each session. During each test session, participants performed maximal voluntary isometric contractions (MVC) and a submaximal contraction at 75 % MVC until exhaustion (T lim ) of the right elbow flexors. Surface electromyography was recorded from biceps brachii muscle during MVC and T lim . Simple (SRT) and choice (CRT) reaction times were evaluated at rest and just after T lim in a random order.

Results: The total daily energy (S2: +19.5 %, p < 0.05; S3: +27.4 %, p < 0.01) and water (S2: +26.8 %, p < 0.01; S3: +23.2 %, p < 0.05) intake were significantly increased during RIF. However, neither body mass nor body mass index was altered by RIF (F (2,14) = 0.80, p = 0.47 and F (2,14) = 0.78, p = 0.48, respectively). In addition, T lim (F (2,14) = 2.53, p = 0.12), MVC (F (2,14) = 0.51, p = 0.61) and associated electrical activity (F (2,14) = 0.13, p = 0.88) as well as neuromuscular efficiency (F (2,14) = 0.27, p = 0.76) were maintained during RIF. Moreover, neither SRT nor CRT was affected by RIF (F (2,14) = 1.82, p = 0.19 and F (2,14) = 0.26, p = 0.78, respectively) or neuromuscular fatigue (F (1,7) = 0.0002, p = 0.98 and F (1,7) = 3.78, p = 0.09, respectively).

Conclusions: The present results showed that RIF did not adversely affect the neuromuscular performances and anthropometric parameters of elite karate athletes who were undertaking their usual training schedule. In addition, neither RIF nor neuromuscular fatigue poorly affects reaction times in elite karate athletes.

No MeSH data available.


Related in: MedlinePlus