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Effect of Segment-Body Vibration on Strength Parameters.

Goebel RT, Kleinöder H, Yue Z, Gosh R, Mester J - Sports Med Open (2015)

Bottom Line: At the conclusion of the training, a 2-week detraining was imposed and then the study concluded with posttests and retest.Moreover, the muscle tension at maximum knee angle increased less in VG (approximately 35 %) compared to TG (approximately 46 %).We conclude that segment-body vibrations applied in resistance training can offer an effective tool to increase maximum isometric force, compared to traditional training.

View Article: PubMed Central - PubMed

Affiliation: Sport Science Program, Qatar University, P.O. Box 2713, Doha, Qatar.

ABSTRACT

Background: In this study, we examine the biomechanical advantage of combining localized vibrations to hamstring muscles involved in a traditional resistance training routine.

Methods: Thirty-six male and female participants with at least 2 years of experience in resistance training were recruited from the German Sport University Cologne. The participants were randomized into two training groups: vibration training group (VG) and traditional training group (TTG). Both groups underwent a 4-week training phase, where each participant worked out at 70 % of the individual 1 repeat maximum (RM-maximum load capacity of a muscle for one lift to fatigue) (4 sets with 12 repetitions each). For participants in the VG group, local vibration was additionally applied directly to hamstring muscles during exercise. A 2-week examination phase preceded the pretests. After the pretests, the subjects underwent a prescribed training for 4 weeks. At the conclusion of the training, a 2-week detraining was imposed and then the study concluded with posttests and retest.

Results: The measured parameters were maximum isometric force of the hamstrings and maximum range of motion and muscle tension at maximum knee angle. The study revealed a significant increase in maximum isometric force in both training groups (VG = 21 %, TTG = 14 %). However, VG groups showed an increase in their range of motion by approximately 2 %. Moreover, the muscle tension at maximum knee angle increased less in VG (approximately 35 %) compared to TG (approximately 46 %).

Conclusions: We conclude that segment-body vibrations applied in resistance training can offer an effective tool to increase maximum isometric force, compared to traditional training. The cause for these findings can be attributed to the additional local vibration stimulus.

No MeSH data available.


Related in: MedlinePlus

Left: tree diagram of Ward’s cluster analysis. Representation of groups of subjects (groups A, B, C) with similar maximum isometric force development from pre-retest of TTG—group segregation after cluster analysis. Abscissa lists the subjects; ordinate shows the 1-Pearson correlation coefficient value (r) [31]. Segregation line was set at linkage distance 0.9. Right: presentation of mean maximum isometric force development of the three groups
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Fig7: Left: tree diagram of Ward’s cluster analysis. Representation of groups of subjects (groups A, B, C) with similar maximum isometric force development from pre-retest of TTG—group segregation after cluster analysis. Abscissa lists the subjects; ordinate shows the 1-Pearson correlation coefficient value (r) [31]. Segregation line was set at linkage distance 0.9. Right: presentation of mean maximum isometric force development of the three groups

Mentions: The t test (Table 4) shows that the mean increases in maximum force of 21.4 % (VG) and 14.2 % (TTG) were significant. A possible cause for this higher improvement rate of the VG likely stems from the additional vibration stimulus. In order to work out the practical relevance of this study, a cluster analysis was performed, and the results are summarized in Figs. 6 and 7. As a result, three groups (see Fig. 6, right) with distinct development levels became visible. The different courses of the mean values of all groups [1–3] are presented in Fig. 6 (right). For group A (four subjects), an initial decrease in maximum isometric force after the first week of training was observed. From the second measurement onwards, the maximum force value steadily increased compared to the posttest. In contrast to this development, group B (five subjects) showed a steady increase of the maximum force from pretest to retest. Finally, group C (nine subjects) experienced an initial steep increase in maximum force compared to the first measurement, which was subsequently followed by stagnation until the posttest.Fig. 6


Effect of Segment-Body Vibration on Strength Parameters.

Goebel RT, Kleinöder H, Yue Z, Gosh R, Mester J - Sports Med Open (2015)

Left: tree diagram of Ward’s cluster analysis. Representation of groups of subjects (groups A, B, C) with similar maximum isometric force development from pre-retest of TTG—group segregation after cluster analysis. Abscissa lists the subjects; ordinate shows the 1-Pearson correlation coefficient value (r) [31]. Segregation line was set at linkage distance 0.9. Right: presentation of mean maximum isometric force development of the three groups
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4526247&req=5

Fig7: Left: tree diagram of Ward’s cluster analysis. Representation of groups of subjects (groups A, B, C) with similar maximum isometric force development from pre-retest of TTG—group segregation after cluster analysis. Abscissa lists the subjects; ordinate shows the 1-Pearson correlation coefficient value (r) [31]. Segregation line was set at linkage distance 0.9. Right: presentation of mean maximum isometric force development of the three groups
Mentions: The t test (Table 4) shows that the mean increases in maximum force of 21.4 % (VG) and 14.2 % (TTG) were significant. A possible cause for this higher improvement rate of the VG likely stems from the additional vibration stimulus. In order to work out the practical relevance of this study, a cluster analysis was performed, and the results are summarized in Figs. 6 and 7. As a result, three groups (see Fig. 6, right) with distinct development levels became visible. The different courses of the mean values of all groups [1–3] are presented in Fig. 6 (right). For group A (four subjects), an initial decrease in maximum isometric force after the first week of training was observed. From the second measurement onwards, the maximum force value steadily increased compared to the posttest. In contrast to this development, group B (five subjects) showed a steady increase of the maximum force from pretest to retest. Finally, group C (nine subjects) experienced an initial steep increase in maximum force compared to the first measurement, which was subsequently followed by stagnation until the posttest.Fig. 6

Bottom Line: At the conclusion of the training, a 2-week detraining was imposed and then the study concluded with posttests and retest.Moreover, the muscle tension at maximum knee angle increased less in VG (approximately 35 %) compared to TG (approximately 46 %).We conclude that segment-body vibrations applied in resistance training can offer an effective tool to increase maximum isometric force, compared to traditional training.

View Article: PubMed Central - PubMed

Affiliation: Sport Science Program, Qatar University, P.O. Box 2713, Doha, Qatar.

ABSTRACT

Background: In this study, we examine the biomechanical advantage of combining localized vibrations to hamstring muscles involved in a traditional resistance training routine.

Methods: Thirty-six male and female participants with at least 2 years of experience in resistance training were recruited from the German Sport University Cologne. The participants were randomized into two training groups: vibration training group (VG) and traditional training group (TTG). Both groups underwent a 4-week training phase, where each participant worked out at 70 % of the individual 1 repeat maximum (RM-maximum load capacity of a muscle for one lift to fatigue) (4 sets with 12 repetitions each). For participants in the VG group, local vibration was additionally applied directly to hamstring muscles during exercise. A 2-week examination phase preceded the pretests. After the pretests, the subjects underwent a prescribed training for 4 weeks. At the conclusion of the training, a 2-week detraining was imposed and then the study concluded with posttests and retest.

Results: The measured parameters were maximum isometric force of the hamstrings and maximum range of motion and muscle tension at maximum knee angle. The study revealed a significant increase in maximum isometric force in both training groups (VG = 21 %, TTG = 14 %). However, VG groups showed an increase in their range of motion by approximately 2 %. Moreover, the muscle tension at maximum knee angle increased less in VG (approximately 35 %) compared to TG (approximately 46 %).

Conclusions: We conclude that segment-body vibrations applied in resistance training can offer an effective tool to increase maximum isometric force, compared to traditional training. The cause for these findings can be attributed to the additional local vibration stimulus.

No MeSH data available.


Related in: MedlinePlus