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Orvosi Hetilap
Authors:
Krisztina Marosi
,
Endre Horváth
,
Péter Nagy
,
Bernadett Köles
, and
Zsolt B. Nagy

Az utóbbi években megerősítést nyert a fizikai teljesítmény jelentős mértékű genetikai meghatározottsága. Emellett a sportoláshoz köthető sérülésekre és betegségekre való genetikai hajlamról is egyre nagyobb ismeretanyag áll rendelkezésünkre. A teljesítményt befolyásoló génpolimorfizmusok vizsgálata lehetőséget kínál a sportági kiválasztási rendszer fejlesztésére. A sportoló genetikai profiljának ismerete a jövőben lehetővé teszi a személyre szabott edzésprogram kidolgozását és ezáltal a teljesítmény potenciális növelését. A genetikai tesztek a jövőben fontos szerepet játszhatnak a sérülések és a betegségek genetikai kockázati tényezőinek szűrésében is. Orv. Hetil., 2012, 153, 1247–1255.

Open access

Aim

Very few studies have investigated the temporal specificity of melatonin (MEL) ingestion upon short-term maximal athletic performances. The aim of the present study was to explore the effect of morning MEL ingestion on cognitive and physical performances measured in the afternoon.

Methods

Twelve soccer players from a Tunisian squad (17.9 ± 1.3 years, 1.74 ± 0.06 m and 62.0 ± 8.8 kg) participated in the present study. They performed two testing sessions at 08:00 h, 12:00 h and 16:00 h after either MEL (5mg) or placebo (PLA) ingestion, in a randomized order. During each period, the participants performed the following cognitive and physical tests: reaction time and vigilance tests, medicine-ball throw (MBT), five jumps, handgrip strength (HG), and agility tests.

Results

cognitive and physical performances were significantly higher at 16:00 h compared to 08:00 h during the two conditions (p < 0.05). Moreover, performances of MBT and HG were lower in the morning with MEL in comparison to PLA (p < 0.05). However, MEL ingestion did not affect physical and cognitive performances measured at 12:00 h and 16:00 h.

Conclusion

morning MEL ingestion has no unfavourable effect on afternoon physical and cognitive performances in soccer players.

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This study was aimed to analyze the effect of two different megadoses of α-tocopherol (vit E) in the antioxidant activity and red and white blood series of Wistar rats after a 180-min ultraendurance probe. Three groups of 10 rats were analyzed; VEAG: acute administration of a megadoses of 5,000 IU/kg of vit E the day before the probe; VECG: chronic administration of 1,000 IU/kg/day of vit E for 6 days before the probe; CG: placebo administration. VEAG presented white cells, red blood cells, hematocrit, hemoglobin values significantly higher than CG and VECG (p < 0.05). The mean corpuscular hemoglobin and lymphocytes concentrations were significantly higher in the VECG than in the other two groups (p < 0.05). Similarly, VEAG presented a significantly higher vit E blood concentration than VECG and CG (p < 0.05), and VECG than CG (p < 0.05). Finally, we found a significantly positive correlation between trolox equivalent antioxidant capacity (TEAC) and red blood cells concentration (r = 0.374) and a significantly inverse correlation between TEAC and blood lactate concentration (r = −0.365). Our findings suggest that acute vit E megadoses could protect against transitory sport anemia symptoms and increase the white blood cell count in comparison with the chronic dose and control groups after an ultraendurance probe.

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Aim

To investigate the effects of 3-month-long specific training program on biochemical status, oxidative and antioxidant responses in elite karatekas.

Methods

Twenty male karatekas [BMI: 21.9 ± 2.4 (kg/m2)] participated in this study. They performed a 3-month specific training to prepare for an international competition. We measured selected biochemical parameters, the oxidative and antioxidant responses before (T0) and after 3 months of intense karate training (T1).

Results

We found significant increases in catalase activity (26.3% ± 21.3%, p < 0.0005), superoxide dismutase activity (15.9% ± 28.8%, p < 0.05), and a significant decrease in malondialdehyde levels (17.2% ± 13.7%, p < 0.0005) after 3 months of karate training. Moreover, the athletes’ biochemical status was significantly improved at T1 compared with T0 (for the majority of parameters, p < 0.0005).

Conclusions

The specific training program improves the prooxidant–antioxidant balance of elite karate athletes. It could be recommended for athletes having similar physical fitness level.

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A Kanpó hagyományos orvoslás, ma is támogatott terápiás lehetőség Japánban.

Kanpó-készítmények

Kanpo traditional medicine nowadays is still a supported therapeutic option in Japan.

Kanpo preparations
Orvosi Hetilap
Authors:
Anna Blázovics
and
Botond Csorba

intolerance in high-fat diet-fed mice. Exp Ther Med. 2021; 3: 707–712. 23 Powers ME. Ephedra and its application to sport performance: another concern for

Open access

Az Ephedrae herba helye a nyugati orvoslásban

The position of Ephedrae herba in the Western medicine

Orvosi Hetilap
Authors:
Andrea László
,
Szabolcs Béni
, and
János Nemcsik

. 43 Powers ME. Ephedra and its application to sport performance: another concern for the athletic trainer? J Athl Train. 2001; 36: 420–424. 44

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performance. The mental health model revisited. Sports Med., 2001, 31 , 875–890. Raglin J. S. Psychological factors in sport performance. The mental health model revisited

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Acta Physiologica Hungarica
Authors:
V.J. Clemente-Suárez
,
R.J. Fernandes
,
J.J. Arroyo-Toledo
,
P. Figueiredo
,
J.M. González-Ravé
, and
J.P. Vilas-Boas

, 936 – 940 ( 2011 ) 8. Hopkins WG , Hawley JA , Burke LM : Design and analysis of research on sport performance enhancement . Med. Sci

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Acta Physiologica Hungarica
Authors:
E Bosnyák
,
E Trájer
,
A Udvardy
,
Z Komka
,
A Protzner
,
T Kováts
,
I Györe
,
M Tóth
,
J Pucsok
, and
M Szmodis

. Ma F , Yang Y , Li X , Zhou F , Gao C , Li M , Gao L : The association of sport performance with ACE and ACTN3 genetic polymorphisms: a systematic review and meta-analysis . PLoS One 8 , e54685 ( 2013

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Az önszabályozás erő-modellje

The strength model of self-control

Mentálhigiéné és Pszichoszomatika
Authors:
Bálint Vargha
and
Enikő Csilla Kiss

. ( 2014 ). Emotion regulation and sport performance . Journal of Sport and Exercise Psychology , 36 ( 4 ), 401 – 412 . Wallace , H.M. , & Baumeister , R.F. ( 2002 ). The effects

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