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Differences Between Pullover and Pulldown Exercises on Maximal Isometric Force and Myoelectric Activity in
Luis Felipe M Teixeira1, Willy A Gomes2,3, Josinaldo J DA Silva2
1Department of Physical Education, Campinas State University, Campinas, BRAZIL.
International Journal of Exercise Science
|August 22, 2022
Summary
Shoulder joint position significantly impacts peak force and muscle activation during pullover and pulldown exercises. These findings offer insights for optimizing resistance training programs.
Area of Science:
- Biomechanics
- Exercise Physiology
Background:
- The pullover and pulldown exercises are common in resistance training.
- Understanding muscle activation and force production across different joint positions is crucial for exercise optimization.
Purpose of the Study:
- To compare myoelectric activation and peak force (PF) between pullover (PO) and pulldown (PW) exercises.
- To investigate the effect of various shoulder joint positions (0°, 45°, 90°, 135°, 180°) on these parameters during maximal isometric contractions.
Main Methods:
- Fifteen healthy, resistance-trained men performed maximal voluntary isometric contractions for PO and PW exercises.
- Myoelectric activation (iEMG) of pectoralis major (PM), latissimus dorsi (LD), and posterior deltoid (PD) was measured.
- Peak force (PF) and rating of perceived exertion (RPE) were recorded.
Main Results:
- Significant main effects for exercise and joint position were found for PF (p < 0.001).
- Significant main effects for joint position were observed for iEMG of PM, LD, and PD (p < 0.001).
- A significant interaction between exercise and joint position affected iEMG PM (p < 0.001). RPE showed no significant differences.
Conclusions:
- Specific shoulder joint positions significantly influence peak force production and muscle activation during both pullover and pulldown exercises.
- The findings suggest that exercise programming should consider shoulder joint angles to maximize effectiveness.
- Rating of perceived exertion was not significantly affected by exercise type or joint position.
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