Electromyography Analysis of Muscle Activation During Stand-Up Paddle Boarding: A Comparison of Paddling in Kneeling and Standing Positions

Background: This study aimed to understand individual muscle use in different paddling postures in stand-up paddle boarding (SUP). Methods: Sixteen college students were recruited in this study. Surface electromyography of 16 muscles on the dominant side was recorded. Results: In the time series, the biceps muscle exhibited a continuous activation pattern in the pull phase when kneeling, whereas when standing, the muscle contracted considerably in the exit and recovery phases, implying that it plays different roles in the two postures. The biceps also exhibited significantly higher muscle activation in the kneeling position than it did in the standing position. The maximum muscle activity levels of the external oblique abdominis and triceps were significantly higher when standing than when kneeling. In addition, an unstable SUP board activated the gastrocnemius to help paddlers maintain stability on a swaying surface. Moreover, additional power from the wrist flexor must be used in the recovery and catch phases to stabilize paddle control in the standing position. Conclusion: The knowledge that changes in SUP posture activate different muscle groups can enhance training efficiency and provide a reference for designing individualized training programs.

Cross-Hand Replantation

Combined major injury to both upper extremities, in which one hand is amputated and structurally intact but not replantable, and the other hand is unsalvageable, is a rare setting in which cross-hand replantation may be considered. We report a case of an emergency cross-hand replantation performed at the wrist level. In our case, insertions of the wrist flexor and extensor tendons at the second and third metacarpal bases were retained at the recipient, allowing for early active wrist motion and finger motion by tenodesis. Fascicle-specific nerve coaptations were performed. The patient achieved satisfactory functional results, allowing him independence with daily living activities and return to gainful employment. At the time of telemedicine follow-up at 5 years, he was employed full-time, reported no difficulty or mild difficulty with most daily activities, and preferred the use of his replanted hand over a contralateral prosthesis.

Efektivitas Dry-Needling Terhadap Spatisitas, Range of Motion, dan Intensitas Nyeri Pasien Paska Stroke di Rumah Sakit Umum Pusat Dr. Mohammad Hoesin Palembang

Spastisitas merupakan kelainan motorik ditandai peningkatan kecepatan refleks regang otot dengan meningkatkan sentakan tendon sebagai sindrom upper motor neuron (UMN). Prevalensi spastisitas 43% pada 6 bulan setelah serangan pertama stroke dan 38% pada 1 tahun setelah stroke. Spatisitas dapat menurunkan kualitas hidup. Oleh karena itu, diperlukan terapi yang dapat menurunkan spastisitas pada penderita paska stroke. Tujuan penelitian ini adalah mengetahui efektivitas dry needling terhadap spastisitas, ROM, status fungsional dan nyeri pasien paska stroke di RSUP dr. Moh. Hoesin Palembang. Metode yang digunakan dalam penelitian ini adalah uji klinik randomized control trial (RCT) Add On, double blind, menilai spastisitas dengan MMAS, ROM, UEFI dan NRS penderita. Hasil penelitian ini adalah efektivitas dry needling berupa immediate dan progressivity effect MMAS dan ROM elbow flexor, wrist flexor p<0,05, kecuali efek progresifitas MMAS wrist flexor minggu ke-5 dan 6 (p=0,102 dan 0,157) dan p>0,05 pada sustainable effect MMAS dan ROM. Progressivity effect UEFI dan NRS p<0,05 dan sustainable effect minggu 5-6 UEFI dan NRS p>0,05. Perbedaan signifikan dry needling dibandingkan sham needling pada tiap minggu. Sehingga, dapat disimpulkan bahwa dry needling terbukti efektif menurunkan spastisitas dibandingkan sham needling.