2020, Volume 16, Issue 1

Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes



Ronaldo A. D. Silva1, Leszek A. Szmuchrowski2, Paula Simonini3, Cristiano A. G. Flôr4, Bruno V. C. da Silva5, Marcos D. M. Drummond2

1Estácio de Sá University Center of Belo Horizonte (Centro Universitário Estácio de Sá de Belo Horizonte); Federal University of Minas Gerais (Universidade Federal de Minas Gerais), Belo Horizonte, Brazil
2Federal University of Minas Gerais (Universidade Federal de Minas Gerais), Belo Horizonte, Brazil
3Federal University of Minas Gerais (Universidade Federal de Minas Gerais), Belo Horizonte, Brazil
4Estácio de Sá University Center of Belo Horizonte (Centro Universitário Estácio de Sá de Belo Horizonte); Federal University of Minas Gerais (Universidade Federal de Minas Gerais), Belo Horizonte, Brazil
5University of Itaúna (Universidade de Itaúna); University Center of Belo Horizonte (Centro Universitário de Belo Horizonte), Belo Horizonte, Brazil


Author for correspondence: Ronaldo A. D. Silva; Estácio de Sá University Center of Belo Horizonte (Centro Universitário Estácio de Sá de Belo Horizonte); Federal University of Minas Gerais (Universidade Federal de Minas Gerais), Belo Horizonte, Brazil; email: ronaldo.angelo@estacio.br


Abstract

Background &Study Aim: Fasting is one of the most used nutritional strategies for weight loss by taekwondo athletes, but it could decrease sports performance. However, fasting promoted by breakfast omission may be an efficient alternative to rapid weight loss without negatively impair performance. This study aim was answer to question: whether 12-hour fasting promoted by breakfast omission promotes acute weight loss and interferes with the general and specific physical performance of taekwondo athletes.

Material &Methods: In a randomized, double-blind, crossover design, 10 black belts taekwondo athletes performed two experimental sessions of countermovement jump (CMJ) and three rounds of Frequency of Speed Kick Test multiple (FSKTmult) series. Physical performance was determined by the total kicks of the three rounds (TK) and of each round (TKR) performed after fasting, in two conditions: after ingesting a placebo drink or a liquid meal. Rate perception effort of the mean of the three rounds (RPEm), rate perception effort of each round (RPE), the total kicks decrement index (TKDI) and the kicks decrement index in each round (KDI) were measured.

Results: Total body mass decrease significantly between pre (64.68 ±7.11 kg) and post-fasting (64.03 ±7.03 kg) (p = 0.001; d = 0.09; Δ = 1%). CMJ, TK, RPEm and TKDI were not different between situations. KDI was not different between rounds in any condition. TKR decreased (p<0.001) between the three rounds but not between situations. RPE was not different between situations (p = 0.27) but increased between rounds (p<0.05).

Conclusions: A 12-hour fasting promoted by breakfast omission may be efficient to significantly decrease total body mass, without decrease the physical performance of taekwondo athletes.


Key words: placebo, energy balance, dietary restrictions, combat sports, body weight changes


Cite this article as:

AMA:

A. D. Silva R, A. Szmuchrowski L, Simonini P et al. Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes. Arch Budo Sci Martial Arts Extreme Sports. 2020;16

APA:

A. D. Silva, R., A. Szmuchrowski, L.., Simonini, P.., A. G. Flôr, C., V. C. da Silva, B., & D. M. Drummond, M. (2020). Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes. Arch Budo Sci Martial Arts Extreme Sports, 16

Chicago:

A. D. Silva, Ronaldo, A. Szmuchrowski Leszek , Simonini Paula , A. G. Flôr Cristiano, V. C. da Silva Bruno, D. M. Drummond Marcos. 2020. "Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes". Arch Budo Sci Martial Arts Extreme Sports 16

Harvard:

A. D. Silva, R., A. Szmuchrowski, L.., Simonini, P.., A. G. Flôr, C., V. C. da Silva, B., and D. M. Drummond, M. (2020). Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes. Arch Budo Sci Martial Arts Extreme Sports, 16

MLA:

A. D. Silva, Ronaldo et al. "Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes." Arch Budo Sci Martial Arts Extreme Sports, vol. 16, 2020

Vancouver:

A. D. Silva R, A. Szmuchrowski L, Simonini P et al. Effect of 12 hour-fasting promoted by breakfast omission on acute weight loss and physical performance of taekwondo athletes. Arch Budo Sci Martial Arts Extreme Sports 2020; 16