Sports medicine international open最新文献_第10页

Current Soccer Footwear, Its Role in Injuries and Potential for Improvement. 目前的足球鞋，它在伤害中的作用和改进的潜力。

Sports medicine international open Pub Date : 2018-05-25 eCollection Date: 2018-04-01 DOI: 10.1055/a-0608-4229

Sylvain Blanchard, Jérôme Palestri, Jean-Luc Guer, Michel Behr

引用次数: 10

Landing Styles Influences Reactive Strength Index without Increasing Risk for Injury. 着陆方式在不增加受伤风险的情况下影响反应强度指数。

Sports medicine international open Pub Date : 2018-05-22 DOI: 10.1055/a-0608-4280

Dana Guy-Cherry, Ahmad Alanazi, Lauren Miller, Darrin Staloch, Alexis Ortiz-Rodriguez

{"title":"Landing Styles Influences Reactive Strength Index without Increasing Risk for Injury.","authors":"Dana Guy-Cherry, Ahmad Alanazi, Lauren Miller, Darrin Staloch, Alexis Ortiz-Rodriguez","doi":"10.1055/a-0608-4280","DOIUrl":"10.1055/a-0608-4280","url":null,"abstract":"The aim was to determine which three landing styles - stiff (ST), self-selected (SS), or soft (SF) - exhibit safer landing mechanics and greater jumping performance. Thirty participants (age: 26.5±5.1 years; height: 171.0±8.8 cm; weight: 69.7±10.1 kg) performed five trials of three randomized drop jump (40 cm) landing styles including SF (~60° knee flexion), ST (knees as straight as possible), and SS. Knee flexion and valgus angles and kinetics were measured. An electromyography system measured muscle activity of the gluteus maximus, quadriceps, hamstrings, tibialis anterior, and gastrocnemius. Reactive strength index (RSI) was used to measure jumping performance. ANOVAs were used to compare the three landings. All landings differed in knee flexion (p<0.001; effect size (η 2 ): 0.9) but not valgus (p=.13; η 2 :.15). RSI (mm·ms -1 ) showed differences for all jumps (p<0.001; η 2 : 0.7) with SS (0.96) showing the highest value, then ST (0.93), and SF (0.64). Ground reaction forces were different between jumps (p<0.001; η 2 : 0.4) with SF (1.34/bodyweight (bw)) showing lower forces, then SS (1.50/bw), and ST (1.81/bw). No between-jump differences were observed for EMG (p>0.66; η 2 : 0.3). No landing demonstrated valgus landing mechanics. The SS landing exhibited the highest RSI. However, the 1.8/bw exhibited by the ST landing might contribute to overload of musculotendinous structures at the knee.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 2","pages":"E35-E40"},"PeriodicalIF":0.0,"publicationDate":"2018-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0608-4280","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Small Step Frequency Changes Due to Footwear Condition Have No Effect on Running Economy. 由于鞋类状况导致的小步频变化对运行经济性没有影响。

Sports medicine international open Pub Date : 2018-05-16 eCollection Date: 2018-04-01 DOI: 10.1055/a-0620-8039

Joe Warne, Kieran Andrew Moran, Giles D Warrington

{"title":"Small Step Frequency Changes Due to Footwear Condition Have No Effect on Running Economy.","authors":"Joe Warne, Kieran Andrew Moran, Giles D Warrington","doi":"10.1055/a-0620-8039","DOIUrl":"https://doi.org/10.1055/a-0620-8039","url":null,"abstract":"The aim of this study is to examine if small increases to step frequency associated with minimal footwear can influence Running Economy (RE). Twelve club-level runners with eight weeks of minimal footwear experience were recruited (age, 41±9 years; stature, 177.2±10.4 cm; body mass, 72.6±10.2 kg; V˙O 2max , 52.1±7.5 mL·min -1 ·kg -1 ). Two 6-min RE tests, one in minimal footwear and one in conventional running shoes were performed at 11 km·h -1 . Two more 6-min tests were completed during which step frequency was controlled using a metronome at the cadence of the opposite footwear condition (RE revSF ). Comparisons were completed between the same footwear using repeated measures ANCOVA. The increase in step frequency for minimal footwear vs. conventional running shoes was 7.3±2.3 steps per minute (3.9% difference; 95% CI of difference [5.87 to 8.80 steps/min]; p≤0.001; Cohen's d=0.70). No significant differences were identified between RE and RE revSF for minimal footwear (40.72±4.08 vs. 41.09±4.19 mL·min -1 ·kg -1 ; 95% CI of difference [-1.71 to 0.97]; p=0.55; Cohen's d=0.09), or conventional running shoes (42.04±4.68 vs. 41.74±5.09 mL·min -1 ·kg -1 ; 95% CI of difference [-0.78 to 1.37]; p=0.55; Cohen's d=0.06). Small changes in step frequency (~4%) did not have any significant impact on RE.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 2","pages":"E41-E45"},"PeriodicalIF":0.0,"publicationDate":"2018-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0620-8039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A 9-Week Nordic and Free Walking Improve Postural Balance in Parkinson's Disease. 为期9周的北欧步行和自由步行可改善帕金森病患者的姿势平衡。

Sports medicine international open Pub Date : 2018-01-08 eCollection Date: 2018-04-01 DOI: 10.1055/s-0043-124757

Leandro Tolfo Franzoni, Elren Passos Monteiro, Henrique Bianchi Oliveira, Rodrigo Gomes da Rosa, Rochelle Rocha Costa, Carlos Rieder, Flávia Gomes Martinez, Leonardo Alexandre Peyré-Tartaruga

{"title":"A 9-Week Nordic and Free Walking Improve Postural Balance in Parkinson's Disease.","authors":"Leandro Tolfo Franzoni, Elren Passos Monteiro, Henrique Bianchi Oliveira, Rodrigo Gomes da Rosa, Rochelle Rocha Costa, Carlos Rieder, Flávia Gomes Martinez, Leonardo Alexandre Peyré-Tartaruga","doi":"10.1055/s-0043-124757","DOIUrl":"https://doi.org/10.1055/s-0043-124757","url":null,"abstract":"Aerobic training has a neuroprotective effect in people with Parkinson's disease. Recent evidence indicates that Nordic walking seems a promising alternative due to positive outcomes in functional mobility. However, the effects of Nordic walking compared to free walking on static and functional balance parameters are still unknown. The aim of this study was to evaluate the effects of nine weeks of Nordic and free walking training on static and functional balance. The sample size was 33 individuals with eight dropouts, leaving 25 individuals in the final sample (Nordic Walking, n=14, Free Walking, n=11). The participants underwent two evaluations in the present randomized clinical trial, pre- and post-training, to determine average velocity and root-mean-square values from center of pressure with eyes open and eyes closed. The functional balance showed approximately 5% improvement for the two groups ( p =0.04). The results indicate that nine weeks of Nordic and free walking training were enough to induce improvements in the proprioceptive system and functional balance.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 2","pages":"E28-E34"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/s-0043-124757","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Comparison of Long and Short High-Intensity Interval Exercise Bouts on Running Performance, Physiological and Perceptual Responses. 长、短高强度间歇运动回合对跑步表现、生理和知觉反应的比较。

Sports medicine international open Pub Date : 2017-12-18 eCollection Date: 2018-01-01 DOI: 10.1055/s-0043-124429

Sverre Andre Valstad, Erna von Heimburg, Boye Welde, Roland van den Tillaar

{"title":"Comparison of Long and Short High-Intensity Interval Exercise Bouts on Running Performance, Physiological and Perceptual Responses.","authors":"Sverre Andre Valstad, Erna von Heimburg, Boye Welde, Roland van den Tillaar","doi":"10.1055/s-0043-124429","DOIUrl":"https://doi.org/10.1055/s-0043-124429","url":null,"abstract":"This study compared the effects of long (4×4 min) and short intervals (4×8×20 s) of high-intensity interval exercise bouts (HIIT) on running performance, physiological and perceptual responses, and excess postexercise oxygen consumption (EPOC). Twelve healthy college students (8 men, 4 women; mean age=22±2 years) performed long (90-95% of peak heart rate) and short intervals (maximal intensity) of high-intensity training (running on a non-motorized treadmill) with the same total duration on separate days. The total volume of consumed oxygen during recovery was the same in both cases ( P =0.21), whereas the short intervals of high-intensity training were performed at a faster mean running velocity (3.5±0.18 vs. 2.95±0.07 m/s) and at a lower RPE breath compared with the long intervals of high-intensity training. The blood lactate concentration also tended to be lower during the short intervals of high-intensity training, indicating that short-interval training was perceived to be easier than long-interval training, even though the cardiovascular and metabolic responses are similar. Furthermore, EPOC lasted significantly longer (83.4±3.2 vs. 61.3±27.9 min, P =0.016) and tended to be higher (8.02±4.22=vs. 5.70±3.75 L O 2 , P =0.053) after short intervals than after long intervals of training.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 1","pages":"E20-E27"},"PeriodicalIF":0.0,"publicationDate":"2017-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/s-0043-124429","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Technical Note on Using the Movement Velocity to Estimate the Relative Load in Resistance Exercises - Letter to the Editor. 关于在阻力练习中使用运动速度估算相对负荷的技术说明——致编辑的信。

Sports medicine international open Pub Date : 2017-11-29 DOI: 10.1055/s-0043-118710

Fernando Naclerio, Eneko Larumbe-Zabala

引用次数: 3

Technical Note on Using the Movement Velocity to Estimate the Relative Load in Resistance Exercises - Response. 关于在阻力练习中使用运动速度来估计相对负荷的技术说明-反应。

Sports medicine international open Pub Date : 2017-11-29 DOI: 10.1055/s-0037-1600940

Luis Sánchez-Medina, Jesús G Pallarés, Ricardo Morán-Navarro, Carlos E Pérez, Juan José González-Badillo

引用次数: 0

Does Metabolic Rate Increase Linearly with Running Speed in all Distance Runners? 所有长跑运动员的代谢率是否都随跑步速度呈线性增长？

Sports medicine international open Pub Date : 2017-11-17 eCollection Date: 2018-01-01 DOI: 10.1055/s-0043-122068

Matthew E Batliner, Shalaya Kipp, Alena M Grabowski, Rodger Kram, William C Byrnes

{"title":"Does Metabolic Rate Increase Linearly with Running Speed in all Distance Runners?","authors":"Matthew E Batliner, Shalaya Kipp, Alena M Grabowski, Rodger Kram, William C Byrnes","doi":"10.1055/s-0043-122068","DOIUrl":"10.1055/s-0043-122068","url":null,"abstract":"Running economy (oxygen uptake or metabolic rate for running at a submaximal speed) is one of the key determinants of distance running performance. Previous studies reported linear relationships between oxygen uptake or metabolic rate and speed, and an invariant cost of transport across speed. We quantified oxygen uptake, metabolic rate, and cost of transport in 10 average and 10 sub-elite runners. We increased treadmill speed by 0.45 m · s -1 from 1.78 m · s -1 (day 1) and 2.01 m · s -1 (day 2) during each subsequent 4-min stage until reaching a speed that elicited a rating of perceived exertion of 15. Average runners' oxygen uptake and metabolic rate vs. speed relationships were best described by linear fits. In contrast, the sub-elite runners' relationships were best described by increasing curvilinear fits. For the sub-elites, oxygen cost of transport and energy cost of transport increased by 12.8% and 9.6%, respectively, from 3.58 to 5.14 m · s -1 . Our results indicate that it is not possible to accurately predict metabolic rates at race pace for sub-elite competitive runners from data collected at moderate submaximal running speeds (2.68-3.58 m · s -1 ). To do so, metabolic rate should be measured at speeds that approach competitive race pace and curvilinear fits should be used for extrapolation to race pace.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 1","pages":"E1-E8"},"PeriodicalIF":0.0,"publicationDate":"2017-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/82/97/10-1055-s-0043-122068.PMC6225957.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inter-Day Reliability of Finapres ^® Cardiovascular Measurements During Rest and Exercise. 休息和运动期间Finapres®心血管测量的日间可靠性。

Sports medicine international open Pub Date : 2017-11-17 eCollection Date: 2018-01-01 DOI: 10.1055/s-0043-122081

Mark Waldron, Stephen David Patterson, Owen Jeffries

{"title":"Inter-Day Reliability of Finapres ® Cardiovascular Measurements During Rest and Exercise.","authors":"Mark Waldron, Stephen David Patterson, Owen Jeffries","doi":"10.1055/s-0043-122081","DOIUrl":"https://doi.org/10.1055/s-0043-122081","url":null,"abstract":"This study evaluated the inter-day test-retest reliability of the Finapres ® finger pulse pressure measuring device during rest and exercise. Eight male participants visited the laboratory twice for evaluation of the inter-day reliability of the Finapres ® finger-pulse pressure device to measure: heart rate (HR), stroke volume (SV), cardiac output (Q̇) and mean arterial pressure (MAP) at rest, and treadmill walking at 3 km/h on 1% and 5% inclines. There were no systematic biases for any of the variables between days. The coefficient of variation (CV%) and 95% limits of agreement (95% LoA) was smallest for MAP (CV%=1.6-3.2%; LoA total error=4.6-12 mmHg) and HR (CV%=3.2-3.9%; LoA total error=6.8-11.9 b/min), increasing with exercise intensity (gradient). The pattern of error was different for Q̇, with decreasing CV% (4.8-3.8%) and LoA (4.2-5.7 L/min) from rest to 5% gradient, with the larger errors occurring for resting SV (CV=7.4%; LoA total error=21.5 ml). The device measures MAP and HR reliably between days; however, error increases at higher intensities. The measurement of SV is less reliable, probably owing to underlying algorithmic assumptions.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 1","pages":"E9-E15"},"PeriodicalIF":0.0,"publicationDate":"2017-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/s-0043-122081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Redox Changes in Amateur Race Car Drivers Before and After Racing. 业余赛车手在比赛前后的氧化还原变化。

Sports medicine international open Pub Date : 2017-11-09 eCollection Date: 2017-10-01 DOI: 10.1055/s-0043-119065

Kimberly B Bjugstad, Paul Gutowski, Jennifer Pekarek, Pamela Bourg, Charles W Mains, David Bar-Or

{"title":"Redox Changes in Amateur Race Car Drivers Before and After Racing.","authors":"Kimberly B Bjugstad, Paul Gutowski, Jennifer Pekarek, Pamela Bourg, Charles W Mains, David Bar-Or","doi":"10.1055/s-0043-119065","DOIUrl":"https://doi.org/10.1055/s-0043-119065","url":null,"abstract":"Despite the unique opportunity race car driving provides to study exercise in extreme conditions, the sport of racing is under-represented. A better understanding of how racing changes physiological measures combined with driver demographics may help reduce driver risks and expand the field of driver science. This study charted the changes in heart rate, body temperature, blood pressure, static oxidation reduction potential (sORP), and antioxidant capacity in drivers before and after racing (n=23). The interaction between racing and driver characteristics on physiological variables were evaluated. Heart rate, body temperature, and sORP were elevated after racing (P<0.05). Age, cockpit temperature, experience, and speed did not correlate with physiological or oxidative measures (P>0.05). Elevated post-race sORP values were associated with higher pre-race systolic blood pressure and lower antioxidant capacity (P<0.05). We conclude that racing alters the redox response in drivers and that drivers' pre-race systolic blood pressure and antioxidant capacity can further alter it. A better understanding of the physical and oxidative changes which result from racing may help minimize the unique risks.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"1 6","pages":"E212-E219"},"PeriodicalIF":0.0,"publicationDate":"2017-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/s-0043-119065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36771710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1