Abstract:
PURPOSE:To examine acute responses and recovery of force and serum hormones to combined endurance and strength loadings utilizing different orders of exercises before and after training. METHODS:Physically active men were matched to an order sequence of endurance followed by strength (E + S, n = 12) or strength followed by endurance (S + E, n = 17). The subjects performed one experimental loading consisting of steady-state cycling and a leg press protocol before and after 24 weeks of order-specific combined training. RESULTS:No between-group difference in acute reductions of force was observed at week 0 (E + S -23 %, p < 0.001; S + E -22 %, p < 0.01) and 24 (E + S -25 %, p < 0.001; S + E -27 %, p < 0.001) and recovery in force was completed after 24 h in both groups at week 0 and 24. Concentrations of growth hormone (22-kDa) increased post-acute loading at week 0 (E + S, +57 fold, p < 0.05; S + E, +300 fold, p < 0.001; between-groups p < 0.001) and 24 (E + S, +80 fold, p < 0.01; S + E, +340 fold, p < 0.05; between-groups p < 0.05). No significant acute responses in concentrations of testosterone were observed at week 0 or 24. However, at week 0 testosterone was reduced during recovery following the E + S loading only (24 h -23 %, p < 0.01; 48 h -21 %, p < 0.001; between-groups at 24 and 48 h, p < 0.05), but was no longer observed after training. 1RM strength improved similarly in E + S (13 %, p < 0.001) and S + E (17 %, p < 0.001). CONCLUSIONS:This study showed an order effect (E + S vs. S + E) in concentrations of testosterone during 2 days of recovery at week 0, which was diminished after 24 weeks of training. The initial difference in testosterone concentrations during recovery did not seem to be associated with strength development.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Schumann M,Walker S,Izquierdo M,Newton RU,Kraemer WJ,Häkkinen Kdoi
10.1007/s00421-013-2813-6subject
Has Abstractpub_date
2014-04-01 00:00:00pages
867-80issue
4eissn
1439-6319issn
1439-6327journal_volume
114pub_type
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