Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues
# Background Interventions using vibration stimulation have been recognized for their potential for increasing range of motion (ROM) without compromising muscle strength. Handheld vibration massagers can efficiently deliver vibration therapy to the shoulder joint and may be a potential treatment....
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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North American Sports Medicine Institute
2024-08-01
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| Series: | International Journal of Sports Physical Therapy |
| Online Access: | https://doi.org/10.26603/001c.121299 |
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| _version_ | 1825139388502245376 |
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| author | Takaki Imai Takashi Nagamatsu Yushin Yoshizato Kodai Miyara Megumi Sumizono Masatoshi Nakamura |
| author_facet | Takaki Imai Takashi Nagamatsu Yushin Yoshizato Kodai Miyara Megumi Sumizono Masatoshi Nakamura |
| author_sort | Takaki Imai |
| collection | DOAJ |
| description | # Background
Interventions using vibration stimulation have been recognized for their potential for increasing range of motion (ROM) without compromising muscle strength. Handheld vibration massagers can efficiently deliver vibration therapy to the shoulder joint and may be a potential treatment.
# Purpose
To evaluate the effects of vibration massage using a handheld device on the soft tissues of the posterior shoulder joint, particularly on internal rotation (IR) passive ROM and external rotation (ER) muscle strength.
# Study Design
Crossover study design.
# Methods
A crossover study with a 5-min vibration massage and passive control condition was conducted in healthy male volunteers (mean age 20.5 ± 1.7 years). Vibration massage was applied to the posterior shoulder soft tissues of the dominant arm, with no intervention under control conditions. IR-ROM (vertebral level and in abduction) and strength of the external rotators (isometric and isokinetic) were measured before and immediately after the intervention. Vertebral levels were calculated as a ratio of lengths (ratio decreases with increased mobility). IR-ROM in abduction, the angle was measured. Statistical analysis was performed with two-way repeated measures ANOVA and paired t-test (Bonferroni correction).
# Results
Vibration application decreased (improved) vertebral level IR ROM by −4.1% (p < 0.01, d = 0.445) and increased abduction position IR ROM by 11.4° (p < 0.01, d = 0.694). These changes exceeded the 95% confidence interval for the minimum detectable change. By contrast, the control condition produced no changes. IR-ROM (vertebral level and abduction) immediately after the intervention showed significant differences between the control and vibration conditions (p = 0.036, d = 0.273; p = 0.048, d = 0.483, respectively). Muscle strength did not show any interaction, time, or between-condition effects.
# Conclusions
A massage using a handheld vibration massager applied to the posterior shoulder soft tissues increased IR-ROM without negatively affecting muscle strength, suggesting its potential use as a means of warming up.
# Level of Evidence
Level 3 |
| format | Article |
| id | doaj-art-87b7c7430bfd4ee793ba042065d3607c |
| institution | Kabale University |
| issn | 2159-2896 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | North American Sports Medicine Institute |
| record_format | Article |
| series | International Journal of Sports Physical Therapy |
| spelling | doaj-art-87b7c7430bfd4ee793ba042065d3607c2025-02-11T20:29:59ZengNorth American Sports Medicine InstituteInternational Journal of Sports Physical Therapy2159-28962024-08-01198Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft TissuesTakaki ImaiTakashi NagamatsuYushin YoshizatoKodai MiyaraMegumi SumizonoMasatoshi Nakamura# Background Interventions using vibration stimulation have been recognized for their potential for increasing range of motion (ROM) without compromising muscle strength. Handheld vibration massagers can efficiently deliver vibration therapy to the shoulder joint and may be a potential treatment. # Purpose To evaluate the effects of vibration massage using a handheld device on the soft tissues of the posterior shoulder joint, particularly on internal rotation (IR) passive ROM and external rotation (ER) muscle strength. # Study Design Crossover study design. # Methods A crossover study with a 5-min vibration massage and passive control condition was conducted in healthy male volunteers (mean age 20.5 ± 1.7 years). Vibration massage was applied to the posterior shoulder soft tissues of the dominant arm, with no intervention under control conditions. IR-ROM (vertebral level and in abduction) and strength of the external rotators (isometric and isokinetic) were measured before and immediately after the intervention. Vertebral levels were calculated as a ratio of lengths (ratio decreases with increased mobility). IR-ROM in abduction, the angle was measured. Statistical analysis was performed with two-way repeated measures ANOVA and paired t-test (Bonferroni correction). # Results Vibration application decreased (improved) vertebral level IR ROM by −4.1% (p < 0.01, d = 0.445) and increased abduction position IR ROM by 11.4° (p < 0.01, d = 0.694). These changes exceeded the 95% confidence interval for the minimum detectable change. By contrast, the control condition produced no changes. IR-ROM (vertebral level and abduction) immediately after the intervention showed significant differences between the control and vibration conditions (p = 0.036, d = 0.273; p = 0.048, d = 0.483, respectively). Muscle strength did not show any interaction, time, or between-condition effects. # Conclusions A massage using a handheld vibration massager applied to the posterior shoulder soft tissues increased IR-ROM without negatively affecting muscle strength, suggesting its potential use as a means of warming up. # Level of Evidence Level 3https://doi.org/10.26603/001c.121299 |
| spellingShingle | Takaki Imai Takashi Nagamatsu Yushin Yoshizato Kodai Miyara Megumi Sumizono Masatoshi Nakamura Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues International Journal of Sports Physical Therapy |
| title | Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues |
| title_full | Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues |
| title_fullStr | Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues |
| title_full_unstemmed | Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues |
| title_short | Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues |
| title_sort | acute effects of handheld vibration massage on posterior shoulder soft tissues |
| url | https://doi.org/10.26603/001c.121299 |
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