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Original articles  

The Journal of Sports Medicine and Physical Fitness 2000 June;40(2):156-61

language: English

Comparison of exertional indices following moderate training in collegiate athletes

Thomas S. J., Cooney T. E., Thomas D. J. *

From the Depart­ments of Ortho­paed­ics and ­Research Hamot Med­i­cal Cen­ter, ­Erie, PA
* Med­i­cal Col­lege of Vir­gin­ia, Rich­mond, VA


Back­ground. To bet­ter under­stand the inflam­ma­to­ry ­response to two diver­gent train­ing modal­ities: run­ning and ­weight train­ing.
Meth­ods. Experi­men­tal ­design: pros­pec­tive, ­repeat meas­ures, obser­va­tion­al ­study of sub­jects ­over the ­course of 8-10 ­weeks of train­ing. ­Data anal­y­sis was con­so­nant ­with ­this ­design and includ­ed a ­repeat meas­ures ANO­VA ­with mul­ti­ple ­posthoc com­par­i­sons. The lev­el of sig­nif­i­cance was set at 0.05. Set­ting: col­le­giate ath­let­ic train­ing facil­ities. ­Patients: twen­ty-two sub­jects com­prised the ­study ­group. ­These includ­ed ­both ­male and ­female col­le­giate ath­letes, ­ages 17-22 ­years of age ­with a ­mean ­height of 178.6 cm, a ­mean ­weight of 77.5 kg and a ­mean ­lean ­body ­mass of 67.2 kg. Exclu­sion cri­te­ria con­sist­ed of hemo­phil­ia or chron­ic con­di­tions requir­ing ­anti-inflam­ma­to­ry med­i­ca­tion. Inter­ven­tions: train­ing for run­ners (n=11) con­sist­ed of mul­ti­ple 5-km ­runs through­out the ­course of a 60-75 min­ute work­out. For a com­par­able ­time peri­od, ­weight train­ers par­tic­i­pat­ed in mul­ti­ple ­joint, ­total ­body strength­en­ing work­outs. Meas­ures: ­four exer­tion­al indi­ces ­were exam­ined. ­These includ­ed ser­um lev­els of crea­tine ­kinase, lac­tate, Inter­leu­kin-6, and C-reac­tive pro­tein. Assess­ments of ­these mark­ers ­were ­made imme­di­ate­ly ­before and ­after ­each train­ing ses­sion. ­Three ses­sions ­were mon­i­tored ­over an 8-10 ­week peri­od.
­Results. The ­data ­show ­that mod­er­ate exer­tion is accom­pa­nied by mod­est increas­es in ­these mark­ers. ­Mean ser­um val­ues did not ­exceed 125 U/L for ser­um crea­tine ­kinase, 5 mM/l for lac­tates, and 2.6 pg/ml for IL-6. C-reac­tive pro­tein was spo­rad­i­cal­ly detect­able in ­weight lift­ers ­only. ­These increas­es ­were detect­ed imme­di­ate­ly post­ex­er­cise. ­Each train­ing modal­ity pro­duced a ­unique pro­file for crea­tine ­kinase and IL-6, sug­ges­tive of a train­ing ­effect.
Con­clu­sions. Over­all, the lev­els for all exer­tion­al mark­ers report­ed here­in are ­well ­below ­those report­ed for exhaus­tive exer­cise. As con­sis­tent exhaus­tive ­efforts can cat­a­lyze over­train­ing syn­dromes, peri­od­ic assess­ments of ­these exer­tion­al indi­ces ­could ­help to doc­u­ment the appro­pri­ate­ness of the train­ing stim­u­lus.

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