The purpose of the study is: * To investigate the effect of sport-specific stress in the iron metabolism of dragon boat athletes * To investigate the effects of sport-specific stress in the activity of pro-hepcidin and hepcidin
This investigation evaluates the effects of sport-specific stress in iron metabolism of dragon boat athletes. Recent studies showed a significant increase in hepcidin activity under exercise (Röcker L. et al.(2005): Iron regulatory protein hepcidin is increased in female athletes after a marathon. European Journal of Applied Physiology, S. 95, 569-571)which possibly influences the iron metabolism. In particular in this investigation the activity of pro-hepcidin and hepcidin under sport-specific stress is analysed. Therefore elite dragonboat athletes will be included to this study. Every athlete is tested once. At one exercise day from every athlete the iron metabolism especially the change of hepcidin, prohepcidin and iron before and after a specific dragonboat intervention is analysed.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
SINGLE
Enrollment
40
male athletes of the german national dragon boat team performing three specific training units at one day
women athletes of the german national dragon boat team performing two specific training units and one weight lifting test at one day
change from Baseline in prohepcidin after performing dragonboating
one meassurement of prohepcidin immediate before and within three hours after performing two to four specific dragonboat interventions at the same day
Time frame: pre and post exercise intervention at the same day
haematocrit
one meassurement of haematocrit immediate before and within three hours after performing two to four specific dragonboat intervention at the same day
Time frame: pre and post exercise intervention at the same day
value of reticulocytes
one meassurement of reticulocytes immediate before performing two to four specific dragonboat interventions
Time frame: pre exercise
value of hypochromic erythrocytes
one meassurement of hypochromic erythrocytes immediate before performing two to four specific dragonboat interventions
Time frame: pre exercise
change from Baseline in serum iron after performing dragonboating
one meassurement of serum iron immediate before and within three hours after performing two to four specific dragonboat interventions at the same day
Time frame: pre and post exercise intervention at the same day
value of transferrin
one meassurement of transferrin immediate before performing two to four specific dragonboat interventions
Time frame: pre exercise
value of transferrin saturation
one meassurement of transferrin saturation immediate before performing two to four specific dragonboat interventions
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Time frame: pre exercise
value of ferritin
one meassurement of ferritin immediate before performing two to four specific dragonboat interventions
Time frame: pre exercise
change from Baseline in hepcidin after performing dragonboating
one meassurement of hepcidin immediate before and within three hours after performing two to four specific dragonboat interventions at the same day
Time frame: pre and post exercise intervention at the same day