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| 1 | The effects of 12 weeks of functional strength training on muscle strength,volume and activity upon exposure to elevated Gz forces in high-performance aircraft personnel显示文摘Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The purpose of this study was to examine the effects of 12 weeks of functional strength training on 1)the volume and strength of the neck and shoulder muscles and 2)muscular activity upon exposure to helmets of different masses and elevated Gz forces in a long-arm centrifuge in high-performance aircraft personnel.Methods:Eighteen participants underwent 12 weeks of functional strength training(n=12)or the control protocol(n=6)without additional strength training.Pre-and post-intervention tests included evaluations of isometric strength of the head extensor muscles,flexion,and lateral flexion and rotation,as well as magnetic resonance imaging(MRI)to measure the volume of the m.sternocleidomastoideus,m.trapezius,and deep neck muscles.Furthermore,during a long-arm centrifuge(+1.4 and+3Gz)protocol,the muscular activity levels of the m.sternocleidomastoideus,m.trapezius and m.erector spinae muscles were assessed without a flight helmet,with a helmet,and with a helmet and night vision goggles.Each participant’s perception of muscular strain was noted immediately after the long-arm centrifuge protocol.Results:The maximal isometric strength in all exercises and muscle volumes increased in the training group but not the control group(P<0.05).Relative muscle activity(%MVC)with a helmet decreased after the intervention in the training but not the control group(P=0.01).Relative muscle activity while wearing a helmet and night vision goggles was higher after intervention in the control group than in the training group(P<0.01).The perceived muscular strain of the neck muscles induced by the long-arm centrifuge did not differ between the groups.Conclusions:Twelve weeks of functional strength training improves the maximal isometric strength and volume of neck and shoulder muscles and leads to lower relative muscle activation upon exposure to elevated Gz forces in a long-arm centrifuge. | Monika Rausch Frank Weber Sven Kühn Carla Ledderhos Christoph Zinner Billy Sperlich | 2021 | Military Medical Research2021，8，4： | 4 |
| 2 | An integrated wastewater treatment and reuse concept for the Olympic Park 2008, Beijing显示文摘 | M. Ernst A. Sperlich X. Zheng Y. Gan J. Hu X. Zhao J. Wang M. Jekel | 2006 | Desalination2006，，1： | 1 |
| 3 | An integrated wastewater treatment and reuse concept for the Olympic Park 2008, Beijing 显示文摘 | Ernst M Sperlich A Zheng X | 2007 | Desalination2007，202，： | 1 |
| 4 | Different types of compression clothing do not increase sub-maximal and maximal endurance performance in well-trained athletes 显示文摘 | SPERLICH B HAEGELE M ACHTZEHN S | 2010 | J Sports Sei2010，28，6： | 1 |
| 5 | Table tennis:cardiorespiratory and metabolic analysis of match and exercise in elite junior national players 显示文摘 | Sperlich B Koehler K Holmberg H C | 2011 | International Journal of Sports Physiology and Performance2011，6，2： | 1 |
| 6 | An integrated wastewater treatment and reuse concept for the Olympic Park 2008,Beijing显示文摘 | Ernst M Sperlich A Zheng Y | 2007 | Desalination2007，202，123： | 1 |
| 7 | Previous ex-perience of spontaneous or elective abortion and risk forposttraumatic stress and depression during subsequentpregnancy显示文摘 | Hamama L Rauch SA Sperlich M | 2010 | Depress Anxiety2010，27，8： | 1 |
| 8 | Different types of compression clothing do not increase sub-maximal and maximal endurance performance in well-trained athletes 显示文摘 | SPERLICH B HAEGELE M ACHTZEHN S | 2010 | J Sports Sci2010，28，6： | 1 |
| 9 | Semiparametric single index versus fixed line function mod- elling显示文摘 | H~rdle W Spokoiny V Sperlich S | 1997 | The Annals of Statistics1997，25，21： | 1 |
| 10 | An integrated wastewater treatment and reuse concept for the Olympic Park 2008, Beijing 显示文摘 | Ernst M Sperlich A Zheng X | 2007 | Desalination2007，202，： | 1 |
| 11 | Semiparametric single index versus fixed line function modelling 显示文摘 | H(a|¨)rdle W Spokoiny V Sperlich S | 1997 | The Annals of Statistics1997，25，1： | 1 |
| 12 | Cardio-respiratory and metabolic responses to differentlevels of compression during submaximal exercise显示文摘 | SPERLICH B HAEGELE M KRUGER M | 2011 | Phlebology2011，26，3： | 1 |
| 13 | Energy expenditure in adolescents with cerebral palsy: comparison of the sensewear armband and indirect calorimetry 显示文摘 | Koehler K Abel T Sperlich BW | 2015 | J Phys Act Health2015，12，4： | 1 |
| 14 | Cardio - respira- tory and metabolic responses to different levels of compres- sion during submaximal exercise 显示文摘 | Sperlich B Haegele M Krfiger M | 2011 | Phlebology2011，26，3： | 1 |
| 15 | Exploring dissociation and oxytocin as pathways between trauma exposure and trauma-related hyperemesis gravidarum: a test-of-concept pilot显示文摘 | Seng J Miller J Sperlich M | 2013 | J Trauma Dissociation2013，14，1： | 1 |
| 16 | Semiparametric single index versus versus link function modeling显示文摘 | HADEL W SPOKOINY V SPERLICH S | 1997 | Ann Statist1997，25，： | 1 |
| 17 | Different types of compression clothing do not increase sub-maximal and maximal endurance performance in well-trained athletes显示文摘 | SPERLICH B HAEGELE M ACHTZEHN S | 2010 | J Sports Sci2010，28，6： | 1 |
| 18 | Biomechanical,Cardiorespiratory,Metabolic and Perceived Responses to Electrically Assisted Cycling显示文摘 | Sperlich B Zinner C Hebert-Losier K | 2012 | European Journal of Applied Physiology2012，112，12： | 1 |
| 19 | Oxygen up- take, velocity at lactate threshold, and running economy in elite special forces显示文摘 | SPERLICH B KRUEGER M ZINNER C | 2011 | Mil Med2011，176，2： | 1 |
| 20 | Previous experience of spontaneous abortion or elective abortion and risk for post traumatic stress and depression during Subsequent Pregnancy显示文摘 | Hamana L Rausch SA Sperlich M | 2010 | Depress Anxiety2010，27，8： | 1 |
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