Iron status markers are only transiently affected by a football game

• We examined the temporal variation of iron’s status markers during a 60h period following a football game. Thirty-four male football players were randomly assigned to a control group (CG, N=14, participated only in measurements and training) or an experimental group (EG, N=20, took part in a football game one week after the completion of the competitive season). All participants trained regularly for two consecutive days after the game. Training and game load was monitored with high time-resolution global positioning system (GPS) devices. Blood samples were collected and muscle damage markers and repeated sprint ability (RSA) were assessed pre-game and at 2h, 12h 36h and 60h post-game. No changes were noted in CG. Iron concentration decreased (P<0.05) 2h post-game and normalised thereafter whereas total iron binding capacity increased (P<0.05) 12–60h of recovery (P<0.05). Erythrocytes, haemoglobin (HGB) concentration, plasma volume, haematocrit, mean cell volume, mean cell HGB, mean cell HGB concentration, red cell width-SD, red cell width-CV, ferritin concentration and transferrin saturation remained unaltered during the intervention period. Creatine kinase activity and muscle soreness increased (P<0.05) throughout recovery in EG. RSA declined (P<0.05) until 36h of recovery and normalised thereafter. Our data demonstrate that iron status markers are only transiently affected by a football game. © 2015 Taylor & Francis.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)

Nyckelord

inflammatory responses

iron deficiency

microcycle

recovery

soccer

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)