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Examining the intrinsic foot muscles'capacity to modulate plantar flexor gearing and ankle joint contributions to propulsion in vertical jumping

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Journal of Sport and Health Science 2023年第5期12卷 639-647,F0003页

作者： Ross Smith Glen Lichtwark dominic farris.luke kelly School of Human Movement and Nutrition Sciences The University of QueenslandBrisbaneQLD 4072Australia Sport and Health Sciences College of Life and Environmental SciencesThe University of ExeterExeterEX12LUUnited Kingdom

Background:During human locomotion,a sufficiently stiff foot allows the ankle plantar flexors to generate large propulsive *** foot stiffness(e.g.,via a carbon plate)increases the ankle’s external moment arm in relation to the internal moment arm(i.e.,increasing gear ratio),reduces plantar flexor muscles’shortening velocity,and enhances muscle force *** contrast,when activation of the foot’s intrinsic muscles is impaired,there is a reduction in foot and ankle work and metatarsophalangeal joint *** speculated that the reduced capacity to actively control metatarsophalangeal joint stiffness may impair the gearing function of the foot at the ***:We used a tibial nerve block to examine the direct effects of the intrinsic foot muscles on ankle joint kinetics,in vivo medial gastrocnemius’musculotendinous dynamics,and ankle gear ratio on 14 participants during maximal vertical ***:Under the nerve block,the internal ankle plantar flexion moment decreased(p=0.004)alongside a reduction in external moment arm length(p=0.021)and ankle joint gear ratio(p=0.049)when compared to the non-blocked *** medial gastrocnemius muscle-tendon unit and fascicle velocity were not different between conditions,the Achilles tendon was shorter during propulsion in the nerve block condition(p<0.001).Conclusion:In addition to their known role of regulating the energetic function of the foot,our data indicate that the intrinsic foot muscles also act to optimize ankle joint torque production and leverage during the propulsion phase of vertical jumping.

关键词： Ankle biomechanics Ankle gearing Foot biomechanicsTagedEnd

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A Prospective Review： The Significance of Procalcitonin Levels in the Evaluation of Pediatric Patients Presenting to the Emergency Department with Fever （Pedi-SPEED I）

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Journal of Pharmacy and Pharmacology 2014年第11期2卷 669-674页

作者： Candi Sturges Chanin Wright dominic Lucia Amanda farris McLane Children's Hospital-Baylor Scott & White Healthcare Temple TX USA Department of Pediatrics Texas A&M Health Science Center College of Medicine Temple TX USA College of Pharmacy University of Texas Temple TX USA Department of Emergency Medicine Texas A&M Health Science Center College of Medicine Temple TX USA

Purpose： This study was formulated to educate physicians and medical residents on procalcitonin （PCT）. The need for this study is based on lack of information and studies in the United States in the pediatric population regarding PCT, and also due to the lack of awareness by the Baylor Scott ＆ White McLane Children＇s residents in the implications and benefits of PCT. There are several instances where it can be valuable in the diagnosis and treatment of bacterial infections, which in turn, can decrease patient＇s length of stay, hospital costs, and patient exposure to unnecessary antibiotics, without increasing morbidity or mortality. Methods： An educational, qualitative analysis of PCT awareness is assessed utilizing pre and post surveys. These surveys will be given to pediatric and emergency medicine residents on paper before and after an educational presentation about PCT and its importance as a detection method for infection. Surveys consist of six closed-ended questions on the pre-survey and eight open and close-ended questions on the post-survey about PCT, how it works, general use, and how it can be beneficial. Results： Pediatric and emergency medicine residents were asked to participate in this study at a random monthly department meeting, selected by primary investigator and department head. Residents were asked to complete the pre-survey, listened to a short presentation, and completed the post survey. Comparing the pre-survey to post-survey, there was an overall improvement for both groups for questions 1-5 which showed statistical significance （P 〈 0.05）. No statistical difference was found between groups comparing emergency medicine vs. pediatric departments, interns vs. residents and each subgroup pre-survey vs. post-survey for questions 6 and 7. The open-ended post-survey question identified factors for obtaining PCT levels with attending physician＇s preference as the most common response. Conclusions： This prospective study identified gaps in PCT knowl

关键词： Procalcitonin PCT pediatric infectious disease emergency medicine.

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IN THE TRENCHES Designer luke Cardew on Creating a Sturdy Raincoat with Chinas Famous Tricolored Material

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城市漫步（上海版、英文） 2019年第5期 20-22页

作者： dominic Ngai 不详

Today,it's common to see construction sites of all sizes in China fully covered with a red,white and blue-colored woven plastic fabric to protect certain parts of the scene and to prevent dust from spilling *** be・ing used as protection for scaffold・ings and windows during typhoon season,residents of Hong Kong and Guangdong also consider this highly durable material as an important cultural symbol.

关键词： colored Designer symbol

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IN THE TRENCHES Designer luke Cardew on Creating a Sturdy Raincoat with China's Famous Tricolored Material

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城市漫步（GBA版） 2019年第5期 24-24页

作者： dominic Ngai 不详

Today,it's common to see construction sites all across China fully covered with a red-white-and-blue-colored woven plastic fabric to protect the site and to prevent dust from silling *** being used as protection for scaffolding and windows during typhoon season,residents of Hong Kong and Guangdong also consider this highly durable material an impartant cultural *** the 1950s and'60s,red-white-blue carrier bags have been regularly used to transport goods between the two *** recently,artists and designers have also used the tricolored bag as an inspiration for their creations to pay tribute to the resilient nature of the people from the region,making the red-white-blue material an unofficial emblem for South China.

关键词： colored Designer symbol

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