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The sticking region in three chest-press exercises with increasing degrees of freedom.
J Strength Cond Res. 2012 Nov; 26(11):2962-9.JS

Abstract

The purpose was to investigate the effect of 3 chest-press exercises with different degrees of freedom upon the sticking region and muscle activity in maximal attempts. It was hypothesized that, with increasing degrees of freedom, the sticking region (the weakest region during the lift) would be longer because the muscles need to use a part of their ability to control these increasing degrees of freedom during the exercise. Furthermore, the prime movers would have the same muscle activity, but the biceps muscle activity would increase when the degrees of freedom increases because of the enhanced control of the upward movement. Eleven male subjects (age 22.6 ± 1.7 years, body mass 78.6 ± 8.0 kg, stature 1.80 ± 0.07 m) with at least 1 year of bench press training experience participated in this study. Every subject was tested in 1 repetition maximum (1RM) in the 3 chest-press exercises. During the attempts, kinematics and muscle activity were recorded and analyzed in 4 different regions (downward, presticking, sticking, and poststicking). The participants achieved the highest 1RM strength using the free barbell (106.4 ± 15.5 kg), followed by the Smith machine (103.6 ± 14.8 kg) and dumbbells (89.5 ± 13.7 kg). Furthermore, muscle activity differences (electromyographic) between the 3 different exercises and the muscle activation between the 4 different regions were found. The length of the different lifting regions together with muscle activity was different between the exercises. However, the differences found did not follow the line of increasing degrees of freedom that would result in a longer sticking region. Therefore, it is possible to choose to train a particular chest press exercise with the purpose of training a particular muscle more than the others.

Authors+Show Affiliations

Department of Teacher Education, Nord Trøndelag University College, Levanger, Norway. info@movementimprovement.noNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22158100

Citation

Tillaar, Roland Van Den, and Atle Sæterbakken. "The Sticking Region in Three Chest-press Exercises With Increasing Degrees of Freedom." Journal of Strength and Conditioning Research, vol. 26, no. 11, 2012, pp. 2962-9.
Tillaar RV, Sæterbakken A. The sticking region in three chest-press exercises with increasing degrees of freedom. J Strength Cond Res. 2012;26(11):2962-9.
Tillaar, R. V., & Sæterbakken, A. (2012). The sticking region in three chest-press exercises with increasing degrees of freedom. Journal of Strength and Conditioning Research, 26(11), 2962-9. https://doi.org/10.1519/JSC.0b013e3182443430
Tillaar RV, Sæterbakken A. The Sticking Region in Three Chest-press Exercises With Increasing Degrees of Freedom. J Strength Cond Res. 2012;26(11):2962-9. PubMed PMID: 22158100.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The sticking region in three chest-press exercises with increasing degrees of freedom. AU - Tillaar,Roland Van Den, AU - Sæterbakken,Atle, PY - 2011/12/14/entrez PY - 2011/12/14/pubmed PY - 2013/11/16/medline SP - 2962 EP - 9 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 26 IS - 11 N2 - The purpose was to investigate the effect of 3 chest-press exercises with different degrees of freedom upon the sticking region and muscle activity in maximal attempts. It was hypothesized that, with increasing degrees of freedom, the sticking region (the weakest region during the lift) would be longer because the muscles need to use a part of their ability to control these increasing degrees of freedom during the exercise. Furthermore, the prime movers would have the same muscle activity, but the biceps muscle activity would increase when the degrees of freedom increases because of the enhanced control of the upward movement. Eleven male subjects (age 22.6 ± 1.7 years, body mass 78.6 ± 8.0 kg, stature 1.80 ± 0.07 m) with at least 1 year of bench press training experience participated in this study. Every subject was tested in 1 repetition maximum (1RM) in the 3 chest-press exercises. During the attempts, kinematics and muscle activity were recorded and analyzed in 4 different regions (downward, presticking, sticking, and poststicking). The participants achieved the highest 1RM strength using the free barbell (106.4 ± 15.5 kg), followed by the Smith machine (103.6 ± 14.8 kg) and dumbbells (89.5 ± 13.7 kg). Furthermore, muscle activity differences (electromyographic) between the 3 different exercises and the muscle activation between the 4 different regions were found. The length of the different lifting regions together with muscle activity was different between the exercises. However, the differences found did not follow the line of increasing degrees of freedom that would result in a longer sticking region. Therefore, it is possible to choose to train a particular chest press exercise with the purpose of training a particular muscle more than the others. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/22158100/The_sticking_region_in_three_chest_press_exercises_with_increasing_degrees_of_freedom_ L2 - https://doi.org/10.1519/JSC.0b013e3182443430 DB - PRIME DP - Unbound Medicine ER -