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. 2015 Feb 3;10(2):e0116809.
doi: 10.1371/journal.pone.0116809. eCollection 2015.

Does increasing active warm-up duration affect afternoon short-term maximal performance during Ramadan?

Hana Baklouti  1 , Asma Aloui  2 , Hamdi Chtourou  3 , Walid Briki  4 , Anis Chaouachi  1 , Nizar Souissi  1
Affiliations

Does increasing active warm-up duration affect afternoon short-term maximal performance during Ramadan?

Hana Baklouti et al. PLoS One. .

Abstract

Aim: The purpose of this study was to examine the effect of active warm-up duration on short-term maximal performance assessed during Ramadan in the afternoon.

Methods: Twelve healthy active men took part in the study. The experimental design consisted of four test sessions conducted at 5 p.m., before and during Ramadan, either with a 5-minute or a 15-minute warm-up. The warm-up consisted in pedaling at 50% of the power output obtained at the last stage of a submaximal multistage cycling test. During each session, the subjects performed two vertical jump tests (squat jump and counter movement jump) for measurement of vertical jump height followed by a 30-second Wingate test for measurement of peak and mean power. Oral temperature was recorded at rest and after warming-up. Moreover, ratings of perceived exertion were obtained immediately after the Wingate test.

Results: Oral temperature was higher before Ramadan than during Ramadan at rest, and was higher after the 15-minute warm-up than the 5-minute warm-up both before and during Ramadan. In addition, vertical jump heights were not significantly different between the two warm-up conditions before and during Ramadan, and were lower during Ramadan than before Ramadan after both warm-up conditions. Peak and mean power were not significantly different between the two warm-up durations before Ramadan, but were significantly higher after the 5-minute warm-up than the 15-minute warm-up during Ramadan. Moreover, peak and mean power were lower during Ramadan than before Ramadan after both warm-up conditions. Furthermore, ratings of perceived exertion were higher after the 15-minute warm-up than the 5-minute warm-up only during Ramadan.

Conclusion: The prolonged active warm-up has no effect on vertical jump height but impairs anaerobic power assessed during Ramadan in the afternoon.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. Oral temperature (°C) (mean ± SD, n = 12) recorded before (BR) and during (R2) Ramadan, before (B) and after (A) the 5-minute (5WU) and the 15-minute (15WU) warm-up.
#: significant difference in comparison with before warm-up. *: significant difference in comparison with BR. £: significant difference in comparison with the 5-minute warm-up.
Figure 2
Figure 2. Squat jump heights (cm) (mean ± SD, n = 12) measured after the 5-minute (5WU) and the 15-minute (15WU) warm-up, before (BR) and during (R2) Ramadan.
*: significant difference in comparison with BR.
Figure 3
Figure 3. Counter movement jump heights (cm) (mean ± SD, n = 12) measured after the 5-minute (5WU) and the 15-minute (15WU) warm-up, before (BR) and during (R2) Ramadan.
*: significant difference in comparison with BR.
Figure 4
Figure 4. Peak power (W ∙ kg−1) (mean ± SD, n = 12) determined during the 30-second Wingate test, after the 5-minute (5WU) and the 15-minute (15WU) warm-up, before (BR) and during (R2) Ramadan.
*: significant difference in comparison with BR. £: significant difference in comparison with the 5-minute warm-up.
Figure 5
Figure 5. Mean power (W ∙ kg−1) (mean ± SD, n = 12) determined during the 30-second Wingate test, after the 5-minute (5WU) and the 15-minute (15WU) warm-up, before (BR) and during (R2) Ramadan.
*: significant difference in comparison with BR. £: significant difference in comparison with the 5-minute warm-up.
Figure 6
Figure 6. RPE scores (mean ± SD, n = 12) obtained following the 30-second Wingate test, after the 5-minute (5WU) and the 15-minute (15WU) warm-up, before (BR) and during (R2) Ramadan.
*: significant difference in comparison with BR. £: significant difference in comparison with the 5-minute warm-up.
See this image and copyright information in PMC

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