The influence of range of motion on the functional and structural capacity of the triceps brachii—an experimental study with electromyography

Luís M. Ferreira; Luís Ferreira; Joana Ribeiro; Luís Branquinho; Rafael Peixoto; Luciano Bernardes Leite; Pedro Forte; Luís M. Ferreira; Luís Ferreira; Joana Ribeiro; Luís Branquinho; Rafael Peixoto; Luciano Bernardes Leite; Pedro Forte

doi:10.3934/biophy.2024024

AIMS Biophysics

2024, Volume 11, Issue 4: 445-454. doi: 10.3934/biophy.2024024

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Research article

The influence of range of motion on the functional and structural capacity of the triceps brachii—an experimental study with electromyography

1.
CI-ISCE, ISCE Douro, Penafiel, Portugal
2.
Department of Sports, Higher Institute of Educational Sciences of the Douro, Penafiel, Portugal
3.
Biosciences Higher School of Elvas, Polytechnic Institute of Portalegre, Portalegre, Portugal
4.
Life Quality Research Center (LQRC-CIEQV), Santarém, Portugal;
5.
Laboratory of Exercise Biology, Federal University of Viçosa, Viçosa, MG, Brazil
6.
Department of Sports, Instituto Politécnico de Bragança, Bragança, Portugal
7.
Research Center for Active Living and Wellbeing (LiveWell), Instituto Politécnico de Bragança, Bragança, Portugal

Received: 30 August 2024 Revised: 18 October 2024 Accepted: 23 October 2024 Published: 28 October 2024

Range of motion in exercises is one of the foundations for greater activation of a muscle group. The objective of this investigation was to compare the structural and functional capacity of the triceps brachii between three groups with different angles (90°, 110°, and 130°) in a unilateral elbow extension exercise. The sample consisted of 25 subjects with a mean age of 24.12 ± 3.83 years, mean height of 1.78 ± 0.10 m and mean body weight of 78.01 ± 15.70 kg. The following variables were collected pre- and post-intervention: triceps brachii circumference, one repetition maximum, and electromyography during dynamic exercise. Over eight weeks, subjects performed this exercise, performing 3 sets of 12 repetitions for each arm, with days of rest in between. The results showed that the 110° angle provided greater muscle activation compared to the other angles. There was no difference between the triceps brachii circumference and the root mean square (RMS) between the groups. It was concluded that, although the 110° angle showed a tendency for greater muscle activation, the RMS and arm perimeter data did not show significant differences between all the angles evaluated (90°, 110°, 130°).
- brachial triceps,
- exercise,
- intervention period,
- angles,
- electromyography
Citation: Luís M. Ferreira, Luís Ferreira, Joana Ribeiro, Luís Branquinho, Rafael Peixoto, Luciano Bernardes Leite, Pedro Forte. The influence of range of motion on the functional and structural capacity of the triceps brachii—an experimental study with electromyography[J]. AIMS Biophysics, 2024, 11(4): 445-454. doi: 10.3934/biophy.2024024

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Abstract

Range of motion in exercises is one of the foundations for greater activation of a muscle group. The objective of this investigation was to compare the structural and functional capacity of the triceps brachii between three groups with different angles (90°, 110°, and 130°) in a unilateral elbow extension exercise. The sample consisted of 25 subjects with a mean age of 24.12 ± 3.83 years, mean height of 1.78 ± 0.10 m and mean body weight of 78.01 ± 15.70 kg. The following variables were collected pre- and post-intervention: triceps brachii circumference, one repetition maximum, and electromyography during dynamic exercise. Over eight weeks, subjects performed this exercise, performing 3 sets of 12 repetitions for each arm, with days of rest in between. The results showed that the 110° angle provided greater muscle activation compared to the other angles. There was no difference between the triceps brachii circumference and the root mean square (RMS) between the groups. It was concluded that, although the 110° angle showed a tendency for greater muscle activation, the RMS and arm perimeter data did not show significant differences between all the angles evaluated (90°, 110°, 130°).

Acknowledgments

This research was funded by the Foundation for Science and Technology, I.P., under grant number UID/CED/04748/2020 and the CI-ISCE.

Conflict of interest

The authors declare no conflict of interest.

Author contributions

L.M.P.F.: Conceptualization, Formal Analysis, Methodology, Project Administration, Resources, Writing – original draft. L.B.L and P.F: Methodology, Project Administration, Resources. L.M.P.F and P.F.: Conceptualization, Formal Analysis, Methodology, Project Administration, Resources, Writing – original draft, Funding acquisition.

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