A comparison of catch phase force-time characteristics during clean derivatives from the knee.

Comfort, Paul, Williams, Robert, Suchomel, Timothy J. and Lake, Jason P. (2017) A comparison of catch phase force-time characteristics during clean derivatives from the knee. Journal of Strength and Conditioning Research, 31 (7). pp. 1911-1918. ISSN 1064-8011

[img]
Preview
Text (Please see link to publisher's website for final published version)
A_comparison_of_catch_phase_force_time.96284.pdf - Accepted Version
Available under License Creative Commons Attribution.

Download (877kB) | Preview

Abstract

The aim of this study was to compare load-absorption force-time characteristics of the clean from the knee (CK), power clean from the knee (PCK) and clean pull from the knee (CPK). Ten collegiate athletes (age 27.5 +/- 4.2 years; height 180.4 +/- 6.7 cm; mass 84.4 +/- 7.8 kg), performed three repetitions each of the CK, PCK and CPK with 90% of their 1RM power clean on a force platform. The CK load-absorption duration (0.95 +/- 0.35 s) was significantly longer compared to the CPK (0.44 +/- 0.15 s; p < 0.001, d = 2.53), but not compared to the PCK (0.56 +/- 0.11 s; p > 0.05, d = 1.08), with no differences between PCK and CPK (p > 0.05, d = 0.91). The CPK demonstrated the greatest mean force (2039 +/- 394 N), which was significantly greater than the PCK (1771 +/- 325 N; p = 0.012, d = 0.83), but not significantly different to the CK (1830 +/- 331 N; p > 0.05, d = 0.60); CK and PCK were not different (p > 0.05, d = 0.18). Significantly more load-absorption work was performed during the CK (655 +/- 276 J) compared to the PCK (288 +/- 109 J; d = 1.75, p < 0.001); but not compared to the CPK (518 +/- 132 J; d = 0.80, p > 0.05). Additionally, more load-absorption work was performed during the CPK compared to the PCK (d = 1.90, p = 0.032). Inclusion of the catch phase during the CK does not provide any additional stimulus in terms of mean force or work during the load-absorption phase compared to the CPK, while the CPK may be beneficial in training rapid force absorption due to high force and a short duration.

Item Type: Article
Uncontrolled Keywords: weightlifting derivatives, power clean from the knee, clean pull from the knee, eccentric loading
Subjects: Q Science > QM Human anatomy
Q Science > QP Physiology
Divisions: Departments > Sport and Exercise Sciences
Depositing User: Jason Lake
Date Deposited: 16 Jan 2017 13:43
Last Modified: 11 Sep 2018 13:10
URI: http://eprints.chi.ac.uk/id/eprint/2330

Actions (login required)

View Item View Item