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Speed and surface steepness affect internal tibial loading during running

Journal of Sport and Health Science 2024年第1期13卷 118-124页

作者： Hannah Rice markus Kurz Patrick mai Leon Robertz Kevin Bill Timothy R.derrick Steffen Willwacher department of Physical Performance Norwegian School of Sport SciencesOslo 0806Norway Sports Tech Research Centre Mid Sweden UniversityÖstersund SE-83125Sweden department of mechanical and Process Engineering Offenburg University of Applied SciencesOffenburg 77652Germany Institute of Biomechanics and Orthopaedics German Sport University CologneCologne 50933Germany department of Kinesiology Iowa State UniversityAmesIA 50011USA

Background:Internal tibial loading is influenced by modifiable factors with implications for the risk of stress *** encounter varied surface steepness(gradients)when running outdoors and may adapt their speed according to the *** study aimed to quantify tibial bending moments and stress at the anterior and posterior peripheries when running at different speeds on surfaces of different ***:Twenty recreational runners ran on a treadmill at 3 different speeds(2.5 m/s,3.0 m/s,and 3.5 m/s)and gradients(level:0%;uphill:+5%,+10%,and+15%;downhill:-5%,-10%,and-15%).Force and marker data were collected synchronously *** moments were estimated at the distal third centroid of the tibia about the medial-lateral axis by ensuring static equilibrium at each 1%of *** was derived from bending moments at the anterior and posterior peripheries by modeling the tibia as a hollow ***-way repeated-measures analysis of variance were conducted using both functional and discrete statistical ***:There were significant main effects for running speed and gradient on peak bending moments and peak anterior and posterior *** running speeds resulted in greater tibial *** uphill at+10%and+15%resulted in greater tibial loading than level *** downhill at-10%and-15%resulted in reduced tibial loading compared to level *** was no difference between+5%or-5%and level ***:Running at faster speeds and uphill on gradients≥+10%increased internal tibial loading,whereas slower running and downhill running on gradients≥-10%reduced internal *** running speed according to the gradient could be a protective mechanism,providing runners with a strategy to minimize the risk of tibial stress injuries.

关键词： Bending moments Gradient musculoskeletal modeling Overuse injury Tibial stress Training factors

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Instruments of Change

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ChinAfrica 2024年第4期16卷 40-41页

作者： derrick SILImINA Zambia

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关键词： admitted nurse maintain

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ChinAfrica 2024年第5期16卷 20-21页

作者： derrick SILImINA 不详

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关键词： spite dream boost

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Soy Solace

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ChinAfrica 2024年第9期16卷 50-51页

作者： derrick SILImINA 不详

Suffering from adverse weather conditions,malawi’s farmers savour the prospect of exporting soya beans to the lucrative Chinese *** many farmers,monica Haraba wakes up at 5:00 *** get ready to harvest her soya bean crop at her farmland located on the outskirts of Lilongwe,malawi’s *** like last year,she is expecting lower output due to adverse weather,especially draught.

关键词： farmers weather farmland

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ChinAfrica 2024年第7期16卷 36-37页

作者： derrick SILImINA 不详

As the train engine roars,doors of the wagons gently open at 07:30 a.m.,with crew members waiting for the passengers to board before starting the journey for their next *** hour before the departure,marriam Gadesa hea... 详细信息

关键词： starting destination Training

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Pumping Relief Chinese-built water project is a game-changer for local communities in Tanzanian town

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ChinAfrica 2024年第8期16卷 42-43页

作者： derrick SILImINA 不详

When monica Jiwani relocated to Arusha,the third-largest city in Tanzania,she was dreaming of a happy life in a scenic ***,she was immediately confronted with a harsh and painful reality-scarcity of clean *** thought ... 详细信息

关键词： dream harsh reality

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ChinAfrica 2024年第1期16卷 38-39页

作者： derrick SILImINA 不详

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关键词： citrus farmland mountains

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ChinAfrica 2024年第6期16卷 44-45页

作者： derrick SILImINA 不详

Lying in her makeshift hospital bed,Joyce Tembo thanked medical personnel for evacuating her to the designated national cholera treatment centre,6 km north of Zambia’s capital *** was recently diagnosed with diarrhoeal ***,43,commended the medical sta!stationed at the treatment centre for their great service to thousands of patients,especially women and children seeking urgent treatment.“I am very grateful to the Chinese doctors who attended to me as soon as the ambulance rushed me to the clinic where I received urgent treatment;they have really saved my life,”Tembo told *** not all residents in her community are as lucky as *** in the densely populated slums die every day due to the area’s poor sanitation-one of the major causes of the cholera outbreak.

关键词： centre Combat seeking

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作者： derrick SILImINA 不详

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关键词： les des dis

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中国与非洲（法文版） 2024年第6期16卷 44-45页

作者： derrick SILImINA 不详

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关键词： son bien vital

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