The purpose of this study was to investigate the effects of accentuated eccentric load (AEL) resistance training and changes in work capacity, high-intensity exercise endurance (HIEE) and lactate metabolism. Seventeen recreationally trained subjects (11 males and 6 females) (mean ± SD: age = 23.2 ± 4.2 yrs, BM = 81.3 ± 22.2 kg, height = 172.1 ± 10 cm, male relative back squat (BS) [MD1] strength (1RM*BM-1) = 1.64 ± 0.32 kg*kg-1, female relative BS strength = 1.39 ± 0.32 kg*kg-1) participated in the study. Subjects completed a week of familiarization to participate in a week of pre-testing, 4 weeks of strength endurance (S-E) training (3 weeks of increasing intensity with 1 deload week) followed by a final week of post-testing. Subjects were randomly assigned into AEL and traditional (TRAD) resistance training groups, pair matched for relative strength. The AEL subjects performed 3 sets of 10 reps for all multi-joint compound movements where 5 AEL repetitions were performed within the set followed by a traditional repletion and 15 s intraset rest to reattach AEL equipment, like a cluster set (CS) protocol. Resistance training was performed 3 days a week with sprint and agility training two days a week. Maximal BS strength (1RM) and HIEE were tested pre and post training block. HIEE was tested in an incremental exercise test to failure, starting at an initial load of 40kg for 10 reps/min with 2min rest to increase load. Additionally, blood lactate concentrations (BLa) were collected at baseline before any exercise was performed, after warming up, after stage three of HIEE, immediately after the final repetition, 5- and 10- minutes post final repetition. While over time maximal strength and work capacity increased no statistical difference was observed between AEL and TRAD groups after training. Additionally, there were no statistically significant differences in the BLa at similar time points pre and post. Statistically significant correlations were found between strength (squat 1RM) and work capacity, however, strength failed to account for a majority of the variance in the observed data.
[MD1]Back Squat (BS)
| Identifer | oai:union.ndltd.org:ETSU/oai:dc.etsu.edu:etd-5990 |
| Date | 01 August 2024 |
| Creators | Goode, Nicholas |
| Publisher | Digital Commons @ East Tennessee State University |
| Source Sets | East Tennessee State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | Electronic Theses and Dissertations |
| Rights | Copyright by the authors. |
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