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RISS 인기검색어
- 검색키워드
- 저자 : ( Peter Krustrup ) (검색결과 3 건)
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( Magni Mohr ),( Eli Leifsson Nólsøe ),( Peter Krustrup ),( Ioannis G. Fatouros ),( Athanasios Z. Jamurtas ) 한국운동영양학회 2021 Physical Activity and Nutrition (Phys Act Nutr) Vol.25 No.4
[Purpose] The purpose of this study was to (i) assess hydration levels in elite male football players during a national team training camp before and during qualifying matches, (ii) evaluate the effect of coaching strategies for hydration based on feedback from hydration monitoring, and (iii) assess possible relationships between hydration status and training load or wellness markers. [Methods] Thirty-one male players (age 27±4 yrs; height 185±6 cm; weight 82.9±6.7 kg; body fat 10.4±2.3%) representing a national team from the Union of European Football Associations (UEFA) participated. The players were studied during three different national team training camps related to the UEFA Nations League tournament. Urine specific gravity (U<sub>SG</sub>) was measured to assess hydration status. During all camps, the players were actively coached on improving strategies for hydration and given individual feedback on their test results. The training load was measured using GPS technology, and wellness questionnaires were completed. [Results] U<sub>SG</sub> decreased progressively and significantly (p<0.005) during camp 1 and hydration status improved over the three camps, with fewer dehydrated and more well-hydrated players identified during the last part of camp 3. Significantly (p<0.05) higher U<sub>SG</sub> values were observed 2 days prior to a match (MD- 2) than on match day (MD); consequently, 52% of the players were dehydrated on MD-2 and only 6% on MD. No correlations were observed between hydration status and training load or wellness markers. [Conclusion] Dehydration is a challenge in elite male football, but continuous monitoring of hydration status and coaching on hydration strategies can lead to major improvements and reduce the degree of dehydration.
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Abdolreza Sotoodeh Jahromi,Abdossaleh Zar,Fatemeh Ahmadi,Peter Krustrup,Khosrow Ebrahim,Friborz Hovanloo,Davar Amani 대한면역학회 2014 Immune Network Vol.14 No.5
Physical activity could be considered one of the factors thataffect the immune system status and function. To find the relationbetween exercise and cytokines, we examined the possibleeffects of an 8-week endurance training program on theserum levels of cytokines, including tumour necrosis factor-alpha (TNF-α) and interferon-gamma (IFN-γ) in sedentarymen. A total of 30 healthy young male volunteers wererandomly divided into an endurance training group and a controlgroup. The training group followed a specific exerciseprotocol (running on a treadmill for 15∼30 min at 50∼70%maximal heart rate) for 8 weeks and the control group did notparticipate in any exercise program. Venous blood sampleswere collected from both the groups 24 h before and 24 hand 48 h after the exercise. Repeated ANOVA was used forstatistical purposes. The serum levels of TNF-α and IFN-γwere determined by ELISA. Significant (p<0.05) andnon-significant (p>0.05) decreases were observed in theserum levels of IFN-γ and TNF-α, respectively, after the8-week endurance training program. Our findings indicatedthat an 8-week endurance exercise may affect the serum levelsof some inflammatory cytokines, suggesting the beneficialrole of this training protocol in elderly population andpeople with certain conditions (inflammation of the vertebraeor other inflammatory diseases).
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Jahromi, Abdolreza Sotoodeh,Zar, Abdossaleh,Ahmadi, Fatemeh,Krustrup, Peter,Ebrahim, Khosrow,Hovanloo, Friborz,Amani, Davar The Korean Association of Immunobiologists 2014 Immune Network Vol.14 No.5
Physical activity could be considered one of the factors that affect the immune system status and function. To find the relation between exercise and cytokines, we examined the possible effects of an 8-week endurance training program on the serum levels of cytokines, including tumour necrosis factor-alpha (TNF-${\alpha}$) and interferon-gamma (IFN-${\gamma}$) in sedentary men. A total of 30 healthy young male volunteers were randomly divided into an endurance training group and a control group. The training group followed a specific exercise protocol (running on a treadmill for 15~30 min at 50~70% maximal heart rate) for 8 weeks and the control group did not participate in any exercise program. Venous blood samples were collected from both the groups 24 h before and 24 h and 48 h after the exercise. Repeated ANOVA was used for statistical purposes. The serum levels of TNF-${\alpha}$ and IFN-${\gamma}$ were determined by ELISA. Significant (p<0.05) and non-significant (p>0.05) decreases were observed in the serum levels of IFN-${\gamma}$ and TNF-${\alpha}$, respectively, after the 8-week endurance training program. Our findings indicated that an 8-week endurance exercise may affect the serum levels of some inflammatory cytokines, suggesting the beneficial role of this training protocol in elderly population and people with certain conditions (inflammation of the vertebrae or other inflammatory diseases).
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