The repeated bout effect of traditional resistance exercises on running performance across three bouts
Journal Publication ResearchOnline@JCUAbstract
Purpose This study investigated the repeated bout effect of three typical lower-body resistance training (RT) sessions on maximal and sub-maximal effort running performance. Methods Twelve resistance-untrained men (age 24±4 years; height 1.81±0.10 m; body mass 79.3±10.9 kg; VO2peak 48.2±6.5 mL∙kg-1∙min-1; six-repetition maximum squat 71.7±12.2kg) undertook three bouts of RT sessions at six-repetition maximum. Counter-movement-jump (CMJ), lower-body ROM, muscle soreness and creatine kinase (CK) were examined prior to (T0), immediately-post (T1), 24 (T24) and 48 (T48) h post each RT bout. Sub-maximal (i.e. below anaerobic threshold [AT]) and maximal (i.e. above AT) running performance were also conducted at T24 and T48. Results Most indirect muscle damage markers (i.e., CMJ, ROM and muscle soreness) and sub-maximal running performance were significantly improved (P < 0.05; 1.9%) following the third RT bout compared to the second bout. Whilst maximal running performance was also improved following the third bout (P < 0.05; 9.8%) compared to other bouts, the measures were still reduced by 12-20% vs. baseline. However, the increase in CK was attenuated following the second bout (P < 0.05) with no further protection following the third bout (P > 0.05). Conclusions The initial bout induced the greatest change in CK, however at least two bouts were required to produce protective effects on other indirect muscle damage markers and sub-maximal running performance measures. This suggests that sub-maximal running sessions should be avoided for at least 48 hours post RT until the third bout, although a greater recovery period may be required for maximal running sessions.
Journal
Applied Physiology, Nutrition and Metabolism
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Volume
42
ISBN/ISSN
1715-5320
Edition
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Issue
9
Pages Count
8
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Publisher
NRC Research Press
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EISSN
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DOI
10.1139/apnm-2017-0214