Cílem studie bylo zjištění způsobů redukce tělesné hmotnosti ve sportech, kde se setkáváme s hmotnostními kategoriemi. Studie se zúčastnilo 18 mužů a 13 žen ze sportů judo, zápas řecko-římský a volný styl, MMA (Mixed Martial Arts, tzn. smíšená bojová umění), kickbox, thaibox a karate. Pomocí dotazníků jsme zjišťovali délku, míru a způsoby redukce hmotnosti. Z výsledků vyplývá, že hmotnost před závody pravidelně snižuje 87 % závodníků a tato redukce se pohybuje průměrně okolo 5,4 % tělesné hmotnosti (v průměru 3,6 kg). Nejčastější formou této rychlé redukce hmotnosti je kombinace dehydratace a omezení příjmu potravin spolu s nárůstem fyzické aktivity často ve speciálních gumových oblecích nebo ve více vrstvách oblečení. Je důležité zdůraznit, že rychlá ztráta hmotnosti souvisí s rizikem špatného zdravotního stavu.
The aim of this study was to observe the ways of weight loss in combat sports with weight categories. The study included 18 men and 13 women from judo, wrestling Greco-Roman and freestyle, MMA (Mixed Martial Arts), kickboxing, karate and thaibox. We investigated by questionnaires the length, rate and methods of weight reduction. The results show that 87 % of the racers regularly reduce the weight before competition and this reduction moves in average about 5.4% of body weight (average 3.6 kg). The most common form of rapid weight reduction is a combination of dehydration and restriction of food intake with increased physical activity, often in special rubber suits or in more layers of clothing. It is important to highlight that rapid weight loss is related to risk of poor health.
- Keywords
- redukce tělesné hmotnosti, hmotnostní kategorie,
- MeSH
- Martial Arts * MeSH
- Financing, Organized MeSH
- Weight Loss * MeSH
- Humans MeSH
- Weight Reduction Programs methods utilization MeSH
- Diet, Reducing classification methods utilization MeSH
- Interviews as Topic methods utilization MeSH
- Statistics as Topic MeSH
- Physical Education and Training MeSH
- Body Weight Changes MeSH
- Check Tag
- Humans MeSH
The purpose of this study was to determine the impact of a 30 min nap (N30) on the Running-Based Anaerobic Sprint Test (RAST) both during and after Ramadan. Ten physically active kickboxers (age: 21.20 ± 1.61 years, height: 174.80 ± 4.34 cm, body mass: 73.30 ± 7.10 kg and body mass index (BMI): 24.00 ± 2.21 kg/m2) voluntarily performed the RAST test after an N30 and in a no-nap condition (NN) during two experimental periods: the last ten days of Ramadan (DR) and ∼3 weeks after Ramadan (AR). During each DR-NN, DR-N30, AR-NN and AR-N30 protocol, kickboxers performed RAST performance. A statistically significant difference was found between Ramadan periods (DR vs. AR) in terms of max power (W) (F = 80.93; p1 < 0.001; η2p = 0.89), minimum power (W) (F = 49.05; p1 < 0.001; η2p = 0.84), average power (W) (F = 83.79; p1 < 0.001; η2p = 0.90) and fatigue index (%) results (F = 11.25; p1 = 0.008; η2p = 0.55). In addition, the nap factor was statistically significant in terms of the max power (W) (F = 81.89; p2 < 0.001; η2p = 0.90), minimum power (W) (F = 80.37; p2 < 0.001; η2p = 0.89), average power (W) (F = 108.41; p2 < 0.001; η2p = 0.92) and fatigue index (%) results (F = 16.14; p2 = 0.003; η2p = 0.64). Taking a daytime nap benefits subsequent performance in RAST. The benefits of napping were greater after an N30 opportunity for DR and AR.
- MeSH
- Anaerobiosis MeSH
- Adult MeSH
- Body Mass Index MeSH
- Humans MeSH
- Young Adult MeSH
- Sleep * MeSH
- Fatigue * MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Publication type
- Journal Article MeSH
