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Acoustic Myography in Assessment of Isokinetic and Isometric Muscle Strength in a Healthy Danish Population

Journal of Biomedical Science and Engineering 2020年第12期13卷 235-253页

作者： Else Marie Bartels Waqas Ahmed Jack Kvistgaard Olsen eva littrup andersen Bente Danneskiold-Samsøe Lars-Erik Kristensen Henning Bliddal Cecilie Rødgaard Bartholdy Adrian P. Harrison The Parker Institute Copenhagen University Hospital Bispebjerg and Frederiksberg Denmark Department of Neurology Copenhagen University Hospital Bispebjerg and Frederiksberg Denmark Department of Veterinary and Animal Sciences Faculty of Health Science University of Copenhagen Copenhagen Denmark

Isokinetic and isometric force measurements involving a dynamometer setup are widely used in training and in muscle assessment. For further understanding of the method, we investigated the activation of key functional muscles during isokinetic and isometric movements. During force measurements in an isokinetic Biodex System 3 ProTM, acoustic myography (AMG) was applied. Ten healthy subjects (5 men/5 women) in each decade from 20 to 69 years of age participated in the study. Measurements were carried out during extension and flexion of the ankle, knee and elbow joints. Muscle fibre use was measured by efficiency (E-score) and fibre recruitment (temporal (T-score) and spatial (S-score) summation). AMG measurements showed good reproducibility, and the recruitment pattern of muscle fibres did not change with gender or age. Overall, a significantly higher E-score (P < 0.05) was found at the lower angular velocities than at the higher ones, indicating a lower level of muscle efficiency at higher velocities. Muscles used for knee movement exhibited higher scores than muscles associated with the ankle and elbow joints, most likely related to the greater degree of force production at this joint compared to the ankle and elbow. The ability to activate and inactivate muscle fibres during periods of isokinetic activity becomes increasingly more difficult as the velocity increases. When assessing training effects in sports or rehabilitation, AMG in parallel with isokinetic measurements adds important additional information by giving a measure of possible improvements in efficiency and fibre use.

关键词： Muscle Strength Acoustic Myography Range of Motion Muscle Fibre Use

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Bone mineral density in lifelong trained male football players compared with young and elderly untrained men

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Journal of Sport and Health Science 2018年第2期7卷 159-168页

作者： Marie Hagman eva Wulff Helge Therese Hornstrup Bjorn Fristrup Jens Jung Nielsen Niklas Rye Jorgensen Jesper Lovind andersen Jorn Wulff Helge Peter Krustrup Department of Sports Science and Clinical Biomechanics SDU Sport and Health Sciences Cluster (SHSC) University of Southern Denmark Odense 3450 Denmark Department of Nutrition Exercise and Sports University of Copenhagen Copenhagen N 2200 Denmark Institute of Sports Medicine Copenhagen Bispebjerg Hospital Copenhagen NV 2400 Denmark Department of Clinical Biochemistry Rigshospitalet Research Center for Ageing and Osteoporosis Glostrup 2600 Denmark Center of Healthy Aging Department of Biomedical Sciences University of Copenhagen Copenhagen N 2200 Denmark Sport and Health Sciences University of Exeter Exeter EX1 2LU UK

Purpose: The purpose of the present controlled cross-sectional study was to investigate proximal femur and whole-body bone mineral density(BMD), as well as bone turnover profile, in lifelong trained elderly male football players and young elite football players compared with untrained age-matched ***: One hundred and forty healthy, non-smoking men participated in the study, including lifelong trained football players(FTE, n = 35)aged 65—80 years, elite football players(FTY, n = 35) aged 18—30 years, as well as untrained age-matched elderly(UE, n = 35) and young(UY,n = 35) men. All participants underwent a regional dual-energy X-ray Absorptiometry(DXA) scan of the proximal femur and a whole-body DXA scan to determine BMD. From a resting blood sample, the bone turnover markers(BTMs) osteocalcin, carboxy-terminal type-1 collagen crosslinks(CTX-1), procollagen type-1 amino-terminal propeptide(P1NP), and sclerostin were ***: FTE had 7.3%—12.9% higher(p < 0.05) BMD of the femoral neck, wards, shaft, and total proximal femur in both legs compared to UE,and 9.3%—9.7% higher(p < 0.05) BMD in femoral trochanter in both legs compared to UY. FTY had 24.3%—37.4% higher(p < 0.001) BMD in all femoral regions and total proximal femur in both legs compared to UY. The whole-body DXA scan confirmed these results, with FTE showing similar whole-body BMD and 7.9% higher(p < 0.05) leg BMD compared to UY, and with FTY having 9.6% higher(p < 0.001) wholebody BMD and 18.2% higher(p < 0.001) leg BMD compared to UY. The plasma concentration of osteocalcin, CTX-1, and P1NP were 29%,53%, and 52% higher(p < 0.01), respectively, in FTY compared to ***: BMD of the proximal femur and whole-body BMD are markedly higher in lifelong trained male football players aged 65—80 years and young elite football players aged 18—30 years compared to age-matched untrained men. Elderly football players even show higher BMD in femoral trochanter and leg BMD than untrained young despi

关键词：物质密度运动员训练足球骨头 BMD 播放器 FTY

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Fitness and health benefits of team handball training for young untrained women--A cross-disciplinary RCT on physiological adaptations and motivational aspects

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Journal of Sport and Health Science 2018年第2期7卷 139-148页

作者： Therese Hornstrup Johan M.Wikman Bjorn Fristrup Susana Povoas eva W.Helge Signe H.Nielsen Jorn W.Helge Jesper L.andersen Lars Nybo Peter Krustrup Department of Nutrition Exercise and Sports University of Copenhagen Copenhagen N 2200 Denmark Research Center in Sports Sciences Health Sciences and Human Development CIDESD University Institute of Maia ISMAI Maia 4475-690 Portugal Center of Healthy Aging Department of Biomedical Sciences University of Copenhagen Copenhagen N 2200 Denmark Institute of Sports Medicine Copenhagen Bispebjerg Hospital Copenhagen NV 2400 Denmark Department of Sports Science and Clinical Biomechanics SDU Sport and Health Sciences Cluster (SHSC) University of Southern Denmark Odense 3450 Denmark Sport and Health Sciences University of Exeter Exeter EX1 2LU UK

Purpose: The present study evaluated the effects of regular participation in small-sided team handball training on body composition, osteogenic response, physical performance, and cardiovascular risk factors, as well as well-being and motivation, in young untrained ***: Twenty-eight untrained 20- to 30-year-old women were randomized to a handball training group(HG; n = 14, height 170 ± 5 cm, weight 73 ± 11 kg, VO_(2peak) 37.7 ± 4.1 mL/min/kg) that trained 1.7 ± 0.3 times per week over 12 weeks(70 min 4 v 4 handball sessions) or an inactive control group(CG; n = 14, 169 ± 5 cm, 71 ± 12 kg, 38.1 ± 3.7 mL/min/kg). Physiological and psychological and motivational training adaptations were assessed pre-and post-intervention by dual-energy X-ray Absorptiometry(DXA) scans, blood sampling, physical tests, and ***: The average heart rate(HR) over all training sessions was equal to 85% ± 6% HR_(max). Between-group intervention effects were observed in favor of HG for muscle mass(2.1%, p = 0.024), proximal femur bone mineral density(0.8%, p = 0.041), Yo-Yo IE1 intermittent endurance test level 1(IE1) performance(35%, p < 0.001), and incremental treadmill test performance(11.5%, p = 0.003), but not total fat mass(p = 0.176),mean arterial blood pressure(p = 0.328), resting HR(p = 0.219), or blood lipids(p = 0.298—0.854). In CG, no changes were observed in any of the measured physiological variables after the training period. Compared to CG, HG had an increase in intrinsic motivation(p < 0.001) and in the well-being subscale "energy"(p = 0.010).Conclusion: Participation in regular recreational team handball training organized as small-sided games has marked beneficial effects on physical performance, musculoskeletal fitness, well-being, and motivation in untrained young women.

关键词：物理测试类脂化合物测试水平物理性能肉质量训练健康心血管

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79&PARK住宅区

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城市环境设计 2019年第2期118卷 198-209页

作者： H?gni Laksáfoss Agata Wozniczka Agne Tamasauskaite Alberto Herzog Borko Nikolic Christin Svensson Claudio Moretti Dominic Black eva Seo-andersen Frederik Wegener Gabrielle Nadeau Jacob Lykkefold Aaen Jaime Peiro Suso Jan Magasanik Jesper Boye andersen Jonas Aars? Larsen Julian Andres Ocampo Salazar Karl Johan Nyqvist Karol Bogdan Borkowski Katarina Mácková Katrine Juul Kristoffer Negendahl Lucian Racovitan Maria Teresa Fernandez Rojo Max Gabriel Pinto Min Ter Lim Narisara Ladawal Schr?der Romea Muryn Ryohei Koike Sergiu Calacean Song He Taylor McNally-Anderson Terrence Chew Thomas Sebastian Krall Tiago Sá Tobias Vall? S?rensen Tore Banke Laurian Ghinitoiu 朱翰林

位于G?rdet国家公园边缘,Kullen有意识地塑造了一个尊重且适应环境的形式,并展现出与众不同的社区和壮丽的景色。为直接回应周围环境,建筑的西北和东南角高起至临近周边的高度;而距离公园最远、且本是视野最不好的东北角被拉高以使其拥... 详细信息

位于G?rdet国家公园边缘,Kullen有意识地塑造了一个尊重且适应环境的形式,并展现出与众不同的社区和壮丽的景色。为直接回应周围环境,建筑的西北和东南角高起至临近周边的高度;而距离公园最远、且本是视野最不好的东北角被拉高以使其拥有公园和港口最壮阔的景色。建筑西南角延伸至最远处的G?rdet国家公园;为了在建筑和自然之间创造一个人性化的柔和边缘,西南角被尽可能地压低,变成

关键词：住宅区

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