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- Title
Acute response to cluster sets in trained and untrained men.
- Authors
Oliver, Jonathan; Kreutzer, Andreas; Jenke, Shane; Phillips, Melody; Mitchell, Joel; Jones, Margaret; Oliver, Jonathan M; Phillips, Melody D; Mitchell, Joel B; Jones, Margaret T
- Abstract
<bold>Purpose: </bold>In traditional sets (TRD) repetitions are performed continuously, whereas cluster sets (CLU) allow a brief rest between groups of repetitions. We investigated the acute mechanical, metabolic, and hormonal response to CLU in men.<bold>Methods: </bold>Twelve resistance-trained (RT) and 11 untrained (UT) men performed TRD (4 × 10 repetitions with 2 min rest) and CLU [4 × (2 × 5) with 1.5 min rest between sets 30 s rest between clusters] at 70 % 1RM back squat in random order. Seven days separated trials. Average power and time under tension (TUT) were calculated. Blood was sampled pre, sets 1, 2, and 3; immediate post-exercise, 5, 15, 30, 60 min post-exercise for blood lactate, total testosterone (TT), free testosterone (FT), growth hormone (GH), and cortisol.<bold>Results: </bold>CLU produced greater average power at an increasing number of repetitions over each set with greater total volume load. TUT was shorter for RT and lower for CLU in repetitions 1, 6, 7, 8. Blood lactate was higher Set 2 through 30 min in TRD. RT had higher TT; however, the time course was similar between RT and UT. TT and FT increased immediate post-exercise and remained elevated 30 min in both conditions. GH was significantly greater during TRD with a similar pattern observed in both conditions. Cortisol was significantly lower at 30 min in CLU.<bold>Conclusion: </bold>CLU allowed greater total volume load, shorter TUT, greater average power, similar anabolic hormonal response, and less metabolic stress. The acute response was similar despite training status.
- Subjects
RESISTANCE training; PHYSIOLOGICAL effects of hormones; BLOOD lactate; CLUSTER set theory; SOMATOTROPIN; PHYSIOLOGICAL effects of testosterone; SKELETAL muscle physiology; COMPARATIVE studies; HYDROCORTISONE; LACTIC acid; RESEARCH methodology; MEDICAL cooperation; RESEARCH; TESTOSTERONE; WEIGHT lifting; EVALUATION research; HUMAN growth hormone
- Publication
European Journal of Applied Physiology, 2015, Vol 115, Issue 11, p2383
- ISSN
1439-6319
- Publication type
journal article
- DOI
10.1007/s00421-015-3216-7