Limits...
Effects of feedback on activation of the quadriceps during weight-bearing tasks of the Wii.

Fernandes da Silva F, Aparecido de Souza R, Dias EF, Silveira L, Villaverde AB - J Phys Ther Sci (2015)

Bottom Line: [Purpose] This investigation evaluated the effect of real-time feedback on electrical activation of the quadriceps during 3 weight-bearing tasks of the Wii Fit Plus(®). [Subjects] Thirty male healthy volunteers were recruited. [Methods] Activation of the vastus medialis, vastus lateralis, and rectus femoris muscles was recorded during virtual lunge, single leg extension, and single leg reach exercises.Additionally, these games showed electromyographic activation levels similar to those for the same tasks outside the virtual environment.The Wii weight-bearing tasks could therefore constitute a physical activity program but without the additional benefit of feedback.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering Institute, Camilo Castelo Branco University (UNICASTELO), Brazil ; Group of Studies and Research in Health Sciences (GEP-CS), Federal Institute of Education, Science and Technology of the South of Minas Gerais (IFSULDEMINAS), Brazil.

ABSTRACT
[Purpose] This investigation evaluated the effect of real-time feedback on electrical activation of the quadriceps during 3 weight-bearing tasks of the Wii Fit Plus(®). [Subjects] Thirty male healthy volunteers were recruited. [Methods] Activation of the vastus medialis, vastus lateralis, and rectus femoris muscles was recorded during virtual lunge, single leg extension, and single leg reach exercises. Each exercise was performed twice in 3 randomized experimental conditions (with visual feedback, with auditory feedback, and with no feedback). The normalized electromyographic data (using maximum voluntary isometric contraction) were analyzed using repeated measures analysis of variance and Tukey's test. [Results] No significant difference was found in the muscles among the feedback conditions during the 3 exercises. However, the variation in the muscle activity of the vastus medialis and vastus lateralis (18.23-29.20% of maximum voluntary isometric contraction) was higher (47-62%) than that in the rectus femoris (7.35-12.98% of maximum voluntary isometric contraction). [Conclusion] Real-time feedback did not alter quadriceps activation during the Wii tasks. Additionally, these games showed electromyographic activation levels similar to those for the same tasks outside the virtual environment. The Wii weight-bearing tasks could therefore constitute a physical activity program but without the additional benefit of feedback.

No MeSH data available.


Related in: MedlinePlus

Design of experimental procedures, MVIC: maximum voluntary isometric contraction
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4499964&req=5

fig_001: Design of experimental procedures, MVIC: maximum voluntary isometric contraction

Mentions: The subject population was a convenience sample comprised of 30 male healthy volunteersrecruited from the physical education faculty. Demographic data for the sample were asfollows (mean ± standard deviation [SD]): age (20 ± 2 years); body mass (74 ± 9 kg); height(175 ± 7 cm); fat percentage (16 ± 4%); lean mass percentage (83 ± 4%); and body mass index(24 ± 2 kg/m2). The following inclusion criteria were used: (a) no history ofinjuries of the skeletal muscle system; (b) independent in ambulation; and (c) able toperform all the experimental tasks. All participants read and signed an informed consent,and the study was approved by the Ethics Committee of the Camilo Castelo Branco University(Protocol no. 223.695). Figure 1Fig. 1.


Effects of feedback on activation of the quadriceps during weight-bearing tasks of the Wii.

Fernandes da Silva F, Aparecido de Souza R, Dias EF, Silveira L, Villaverde AB - J Phys Ther Sci (2015)

Design of experimental procedures, MVIC: maximum voluntary isometric contraction
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4499964&req=5

fig_001: Design of experimental procedures, MVIC: maximum voluntary isometric contraction
Mentions: The subject population was a convenience sample comprised of 30 male healthy volunteersrecruited from the physical education faculty. Demographic data for the sample were asfollows (mean ± standard deviation [SD]): age (20 ± 2 years); body mass (74 ± 9 kg); height(175 ± 7 cm); fat percentage (16 ± 4%); lean mass percentage (83 ± 4%); and body mass index(24 ± 2 kg/m2). The following inclusion criteria were used: (a) no history ofinjuries of the skeletal muscle system; (b) independent in ambulation; and (c) able toperform all the experimental tasks. All participants read and signed an informed consent,and the study was approved by the Ethics Committee of the Camilo Castelo Branco University(Protocol no. 223.695). Figure 1Fig. 1.

Bottom Line: [Purpose] This investigation evaluated the effect of real-time feedback on electrical activation of the quadriceps during 3 weight-bearing tasks of the Wii Fit Plus(®). [Subjects] Thirty male healthy volunteers were recruited. [Methods] Activation of the vastus medialis, vastus lateralis, and rectus femoris muscles was recorded during virtual lunge, single leg extension, and single leg reach exercises.Additionally, these games showed electromyographic activation levels similar to those for the same tasks outside the virtual environment.The Wii weight-bearing tasks could therefore constitute a physical activity program but without the additional benefit of feedback.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering Institute, Camilo Castelo Branco University (UNICASTELO), Brazil ; Group of Studies and Research in Health Sciences (GEP-CS), Federal Institute of Education, Science and Technology of the South of Minas Gerais (IFSULDEMINAS), Brazil.

ABSTRACT
[Purpose] This investigation evaluated the effect of real-time feedback on electrical activation of the quadriceps during 3 weight-bearing tasks of the Wii Fit Plus(®). [Subjects] Thirty male healthy volunteers were recruited. [Methods] Activation of the vastus medialis, vastus lateralis, and rectus femoris muscles was recorded during virtual lunge, single leg extension, and single leg reach exercises. Each exercise was performed twice in 3 randomized experimental conditions (with visual feedback, with auditory feedback, and with no feedback). The normalized electromyographic data (using maximum voluntary isometric contraction) were analyzed using repeated measures analysis of variance and Tukey's test. [Results] No significant difference was found in the muscles among the feedback conditions during the 3 exercises. However, the variation in the muscle activity of the vastus medialis and vastus lateralis (18.23-29.20% of maximum voluntary isometric contraction) was higher (47-62%) than that in the rectus femoris (7.35-12.98% of maximum voluntary isometric contraction). [Conclusion] Real-time feedback did not alter quadriceps activation during the Wii tasks. Additionally, these games showed electromyographic activation levels similar to those for the same tasks outside the virtual environment. The Wii weight-bearing tasks could therefore constitute a physical activity program but without the additional benefit of feedback.

No MeSH data available.


Related in: MedlinePlus