The comparison of muscle activity according to various conditions during smartphone use in healthy adults

Kim, You Lim; Yoo, Jaehyun; Kang, Sinwoo; Kim, Taerim; Kim, Namyeol; Hong, Soondo; Hwang, Wonjeong; Lee, Suk Min

doi:10.14474/ptrs.2016.5.1.15

Cited by 10 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the proximal muscle of the upper extremity also appeared to be active in order to secure the stability of the position. Our result is different from the result of a previous study [18], which did not describe any influence on the AP position, but only measured movement of the hands. In Kim's research [18], both positions used (standing and sitting posi-tions) were stable, whereas in this study, stable positions were compared with an unstable position.…”

Section: Discussioncontrasting

confidence: 99%

“…Our result is different from the result of a previous study [18], which did not describe any influence on the AP position, but only measured movement of the hands. In Kim's research [18], both positions used (standing and sitting posi-tions) were stable, whereas in this study, stable positions were compared with an unstable position. This difference in experimental design explains the differences in our results.…”

Section: Discussioncontrasting

confidence: 99%

“…The ECR muscle had the highest muscle activity value during gait. This result is consistent with those found in a previous study [18], which found that muscle activity of the AP was the highest in standing position. Muscle activities of the UT, ECR, EPL, and AP were compared.…”

Section: Discussionsupporting

confidence: 94%

See 2 more Smart Citations

Changes in upper limb muscle activity during smartphone usage while in stable and unstable positions and during gait

Kim

Lee

et al. 2018

PTRS

Self Cite

View full text Add to dashboard Cite

The objective of this study was to describe the influence of smartphone usage on the upper limb muscles while in stable and unstable positions and during gait. Design: Cross-sectional study. Methods: The study was conducted with 20 right-handed university students between 20 and 27 years of age. Experiments were carried out on students who have used cell phones for more than a year. In this study, experiments were performed with one-handed and two-handed smartphone operations while on stable ground, and the same parameters were measured during smartphone use on unstable ground and during gait. Subjects were instructed to write a text message in Korean on the smartphone for 3 minutes. This was repeated 3 times, with a rest period of 10 seconds given between each 3-minute period. Electromyography was used to record the muscle activity of the upper trapezius, extensor carpi radialis, extensor pollicis longus, and abductor pollicis (AP) during phone operation. Results: The muscle activity value for the right AP in one-handed and the left-AP in two-handed operations was statistically higher than the other muscles in the stable position and during gait (p<0.0001). Also, the right AP in the one-handed operation condition was statistically higher than the two-handed condition (p<0.0001). Conclusions: The use of smartphones while in a stable position resulted in high muscle activity of the right upper limb AP. However, in an unstable position, there were no significant differences from the other muscle activities. Using smartphone while assuming various positions may lead to musculoskeletal disorders in different places.

show abstract

Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

See 1 more Smart Citation

Changes in upper limb muscle activity during smartphone usage while in stable and unstable positions and during gait

Kim

Lee

et al. 2018

PTRS

Self Cite

View full text Add to dashboard Cite

show abstract

“…Otot abductor pollicis longus dan otot extensor carpi radialis lebih tinggi berkontraksi dan lebih mudah mengalami kelelahan ketika hanya satu tangan saja yang digunakan untuk memegang smartphone daripada menggunakan kedua tangan (p<0,05). 13 Terdapat pula penelitian yang menyatakan bahwa ketergantungan penggunaan keyboard pada laptop maupun komputer lebih berisiko meningkatkan kemunculan sindrom de Quervain daripada smartphone baik dengan 1 tangan maupun dengan kedua tangan. Hal ini disebabkan karena penggunaan keyboard laptop atau komputer yang berlebihan dapat menyebabkan beban yang berlebih pada kontraksi otot extensor pollicis longus dan otot ekstensor jari lainnya sehingga lebih berisiko tinggi menimbulkan keluhan muskuloskeletal seperti sindrom de Quervain.…”

Section: Pembahasanunclassified

The Relationship Between Intensity of Smartphone Usage and the Risk of De Quervain Syndrome in Undergraduate Female Medical Students of Udayana University.

Veronica,

Primayanti,

Adiatmika

2021

eum

View full text Add to dashboard Cite

The intensity of smartphone usage among students is high because the presence of smartphones that support our activities. Many negative effects caused by the intensity of excessive smartphone usage such as musculoskeletal disorders. De Quervain's syndrome is a painful condition of the stiloid processus due to synovial wrapper sheath trauma or inflammation that surrounds the abductor polllicis longus muscle and extensor pollicis brevis muscle in the hand due to excessive repetitive movements. This study was an analytic study with a cross-sectional method to determine the relationship of the intensity of smartphone usage with the risk of de Quervain's syndrome appearance in undergraduate female medical students of Udayana University. Conducted in February-March 2020 at the Faculty of Medicine, Udayana University with 100 undergraduate female medical student of Udayana University class of 2018 and 2019 as respondents who filled DQST (de Quervain Screening Tool) questionnaire on both hands and a questionnaire about intensity of smartphone usage. This research variable consists of independent variable intensity of smartphone usage, dependent variable de Quervain syndrome of both hands, and control variable age, gender, and medical study program. Somers’ D bivariate test results showed no relationship (p> 0.05) between intensity of smartphone usage and risk of de Quervain appearance on both hands. This condition was influenced by position when using a smartphone, type of smartphone, and other factors. Further research is needed related to other factors that influence the risk of de Quervain syndrome appearance and other musculoskeletal disorders. Keywords: de Quervain syndrome, intensity of smartphone usage, pain

show abstract

“…In order to get the best results form sensor data the smartphone would need to be aligned in a horizontal position. Since sitting people hold their smartphone in an angle between zero and 20-degrees [21], acceleration data was interpolated in a vertical direction to cope with this. Additionally, it was made possible to set the current slope for continuous uphill or downhill rides, which allows for more accurate bubble movement.…”

Section: Movement Designmentioning

confidence: 99%

Bubble Margin: Motion Sickness Prevention While Reading on Smartphones in Vehicles

Meschtscherjakov

Strumegger

Trösterer

2019

Human-Computer Interaction – INTERACT 2019

View full text Add to dashboard Cite

The shift towards autonomous driving will allow people to read and work while riding in such a vehicle. Some people suffer from motion sickness while being engaged in these activities in a moving vehicle since the signals of the visual and vestibular systems of the human body are mismatched. One approach to mitigate motion sickness is to provide visual cues for the affected person. We present Bubble Margin, a smartphone application to reduce motion sickness while reading in a moving vehicle. It is built as a stand-alone, semi-transparent overlay application that visualizes motion cues in form of bubbles at the margins of a smartphone while other applications may be used in the remaining area. Forces to move these bubbles are taken from smartphone sensors. An initial within-subject design study (N=10) with participants performing a reading task in a real driving scenario showed mitigating effects on motion sickness symptoms.

show abstract

The comparison of muscle activity according to various conditions during smartphone use in healthy adults

Cited by 10 publications

References 9 publications

Changes in upper limb muscle activity during smartphone usage while in stable and unstable positions and during gait

Changes in upper limb muscle activity during smartphone usage while in stable and unstable positions and during gait

The Relationship Between Intensity of Smartphone Usage and the Risk of De Quervain Syndrome in Undergraduate Female Medical Students of Udayana University.

Bubble Margin: Motion Sickness Prevention While Reading on Smartphones in Vehicles

Contact Info

Product

Resources

About