|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Feasibility of progressive strength training shortly after hip fracture surgery显示文摘AIM: To investigate the feasibility of a 6-wk progressive strength-training programme commenced shortly after hip fracture surgery in community-dwelling patients.METHODS: This prospective, single-blinded cohort study evaluated 31 community-dwelling patients from four outpatient geriatric health centres aged 60 years or older, who started a 6-wk programme at a mean of 17.5 ± 5.7 d after hip fracture surgery. The intervention consisted primarily of progressive fractured kneeextension and bilateral leg press strength training(twice weekly), with relative loads commencing at 15 and increasing to 10 repetitions maximum(RM), with three sets in each session. The main measurements included progression in weight loads, hip fracture-related pain during training, maximal isometric knee-extension strength, new mobility score, the timed up and go test, the 6-min walk test and the 10-meter fast speed walk test, assessed before and after the programme.RESULTS: Weight loads in kilograms in the fractured limb knee-extension strength training increased from 3.3 ± 1.5 to 5.7 ± 1.7 and from 6.8 ± 2.4 to 7.7 ± 2.6, respectively, in the first and last 2 wk(P < 0.001). Correspondingly, the weight loads increased from 50.3 ± 1.9 to 90.8 ± 40 kg and from 108.9 ± 47.7 to 121.9 ± 54 kg in the bilateral leg press exercise(P < 0.001). Hip fracture-related pain was reduced, and large improvements were observed in the functional outcome measurements, e.g., the 6-min walk test improved from 200.6 ± 79.5 to 322.8 ± 68.5 m(P < 0.001). The fractured limb knee-extension strength deficit was reduced from 40% to 17%, compared with the non-fractured limb. Ten patients reported knee pain as a minor restricting factor during the last 10 RM knee-extension strength-training sessions, but with no significant influences on performance. CONCLUSION: Progressive strength training, initiated shortly after hip fracture surgery, seems feasible and does not increase hip fracture-related pain. Progressive strength training resulted in improvement, although a strength deficit of 17% persisted in the fractured limb compared with the non-fractured limb. | Jan Overgaard Morten T Kristensen | 2013 | World Journal of Orthopedics2013，4，4： | 9 |
| 2 | 力量和太极训练对改善膝骨关节炎病人运动能力及症状的作用(英文)显示文摘背景:至今还没有相关研究曾比较过力量和太极训练对膝骨关节炎(OA)症状缓解的作用。本研究旨在评价为期10周的太极训练和抗阻力训练干预对改善老年OA病人症状和运动的作用。方法:31名老年病人(60-85岁)随机分为3组:10周太极组(n=12)、抗阻力训练组(n=13)和对照组(n=6)。所有参与者完成了西安大略大学和麦克马斯特大学(WOMAC)膝骨关节炎的指数功能评分,并在为期10周的干预前后进行了3项身体活动能力测试(6 min步行、计时起立行走、计时上下楼梯)。结果:力量训练组成员的计时起立行走测试成绩(p=0.001)、WOMAC疼痛分项分数(p=0.006)、WOMAC僵硬分项分数(p<0.001)、WOMAC身体机能分项分数(p=0.011)均显著提高。太极组成员的计时起立行走测试成绩显著提高(p<0.001),但WOMAC评分无显著变化。结论:力量训练能有效改善膝关节OA病人的运动和症状,太极训练仅能改善运动能力,但不能改善OA症状。 | Michael Wortley Songning Zhang Maxime Paquette Erin Byrd Lucas Baumgartner Gary Klipple John Krusenklaus Larry Brown | 2013 | Journal of Sport and Health Science2013，2，4： | 5 |
| 3 | Neuromuscular electrical stimulation and testosterone did not influence heterotopic ossification size after spinal cor injury: A case series显示文摘Neuromuscular electrical stimulation(NMES) and testosterone replacement therapy(TRT) are effective rehabilitation strategies to attenuate muscle atrophy and evoke hypertrophy in persons with spinal cord injury(SCI). However both interventions might increase heterotopic ossification(HO) size in SCI patients. We present the results of two men with chronic traumatic motor complete SCI who also had pre-existing HO and participated in a study investigating the effects of TRT or TRT plus NMES resistance training(RT) on body composition. The 49-year-old male, Subject A, has unilateral HO in his right thigh. The 31-year-old male, Subject B, has bilateral HO in both thighs. Both participants wore transdermal testosterone patches(4-6 mg/d) daily for 16 wk. Subject A also underwent progressive NMES-RT twice weekly for 16 wk. Magnetic resonance imaging scans were acquired prior to and post intervention. Cross-sectional areas(CSA) of thewhole thigh and knee extensor skeletal muscles, femoral bone, and HO were measured. In Subject A(NMES-RT + TRT), the whole thigh skeletal muscle CSA increased by 10%, the knee extensor CSA increased by 17%, and the HO + femoral bone CSA did not change. In Subject B(TRT), the whole thigh skeletal muscle CSA increased by 13% in the right thigh and 6% in the left thigh. The knee extensor CSA increased by 7% in the right thigh and did not change in the left thigh. The femoral bone and HO CSAs in both thighs did not change. Both the TRT and NMES-RT + TRT protocols evoked muscle hypertrophy without stimulating the growth of preexisting HO. | Pamela D Moore Ashraf S Gorgey Rodney C Wade Refka E Khalil Timothy D Lavis Rehan Khan Robert A Adler | 2016 | World Journal of Clinical Cases2016，4，7： | 3 |
| 4 | Spinal and supraspinal control of motor function during maximal eccentric muscle contraction:Effects of resistance training显示文摘Neuromuscular activity is suppressed during maximal eccentric(ECC)muscle contraction in untrained subjects owing to attenuated levels of central activation and reduced spinal motor neuron(MN)excitability indicated by reduced electromyography signal amplitude,diminished evoked H-reflex responses,increased autogenic MN inhibition,and decreased excitability in descending corticospinal motor pathways.Maximum ECC muscle force recorded during maximal voluntary contraction can be increased by superimposed electrical muscle stimulation only in untrained individuals and not in trained strength athletes,indicating that the suppression in MN activation is modifiable by resistance training.In support of this notion,maximum ECC muscle strength can be increased by use of heavy-load resistance training owing to a removed or diminished suppression in neuromuscular activity.Prolonged(weeks to months)of heavy-load resistance training results in increased H-reflex and V-wave responses during maximal ECC muscle actions along with marked gains in maximal ECC muscle strength,indicating increased excitability of spinal MNs,decreased presynaptic and/or postsynaptic MN inhibition,and elevated descending motor drive.Notably,the use of supramaximal ECC resistance training can lead to selectively elevated V-wave responses during maximal ECC contraction,demonstrating that adaptive changes in spinal circuitry function and/or gains in descending motor drive can be achieved during maximal ECC contraction in response to heavy-load resistance training. | Per Aagaard | 2018 | Journal of Sport and Health Science2018，7，3： | 3 |
| 5 | Pediatric obesity prevention:From na?ve examination of energy imbalance towards strategies that influence the competition for nutrient resources among tissues显示文摘Current pediatric obesity interventions have collectively yielded relatively unsuccessful results. In this Field of Vision, we present plausible physiologic underpinnings fostering ineffectiveness of conventional strategies grounded in requisite induction of negative energy imbalance. Moreover, such recommendations exacerbate the underlying metabolic dysfunction by further limiting metabolic fuel availability, lowering energy expenditure, and increasing hunger(recapitulating the starvation response amid apparent nutritional adequacy) which precede and promote obesity during growth and development. The qualitative aspects of musculoskeletal system(i.e., endocrine response, muscle functional capacity) are likely to improve metabolic function and increase nutrient delivery and utilization. An intricate and complex system including multiple feedback mechanisms operates to homeostatically regulate energy balance and support optimal body composition trajectories and metabolic health, during growth and development. Thus, ignoring the interdependencies of regulatory growth processes initiates a nuanced understanding of energy regulation and thus misguided attempts at preventive strategies. Importantly, these gains are not dependent upon weight-loss, rather we suggest can be achieved through resistance training. Collectively, optimizing musculoskeletal health via resistance training elicits augmentation of competitive capacity across systems. Further, substantial gains can be achieved in skeletal muscle mass, strength, and functional capacity through resistance training in a relatively short period of time. | Lynae J Hanks Tina Simpson Kenneth McCormick Krista Casazza | 2015 | World Journal of Clinical Pediatrics2015，4，4： | 2 |
| 6 | The relationship of high-intensity cross-training with arterial stiffness显示文摘Background'.Central arterial stiffness is a cardiovascular risk factor that can be readily affected through engagement in physical exercise training,with resistance and aerobic exercise having disparate affects.Despite the growing popularity of high-intensity cross-training(HICT),little is currently known about the effects of this mixed modality exercise stimulus on arterial stiffness.Therefore,the purpose of this study was to characterize the arterial stiffness of habitual HICT participants vs.aerobically active and sedentary controls using a cross-sectional design.Methods'.A total of 30 participants were recruited:10 middle-aged long-term participants of HICT(CrossFit)and 20 age,sex,and height matched controls(10 recreationally active,10 sedentary).Central and peripheral pulse wave velocities were measured for the carotid-femoral and femoral-dorsalis pedis arterial segments.Aerobic fitness(maximal oxygen uptake,VChmax)was measured and typical exercise participation rates were self-reported for each group.Results'.HICT participants manifested central pulse wave velocity(PWV)(5.3±1.0 m/s,mean±SD)and VChmax(43±6 mL/kg/min)values nearly identical to active controls.Both active groups had significantly better values than sedentary controls(7.1±1.0 m/s,p≤0.001;and 32±7 mL/kg/min,p=0.01).No differences were observed in peripheral PWV between groups.Conclusion'.Habitual participation in HICT exercise was not associated with increased central nor peripheral arterial stiffness.Long-term HICT participants presented with similar fitness and arterial stiffness as compared with participants who practiced traditional aerobic exercise.Compared to sedentary living,HICT may offer musculoskeletal and cardiovascular health benefits without negatively impacting arterial stiffness. | Jamie F.Burr Jenny L.Beck John J.Durocher | 2019 | Journal of Sport and Health Science2019，8，4： | 2 |
| 7 | Relationship of Isokinetic Leg Press Force with Jumping Performance and 1RM in the Squat显示文摘Purpose Muscle strength and power are important requirements in many sports.The correlation of jumping performance as manifestation of muscle power and squatting one-repetition maximum(1RM)has been shown in several investigations.Correlations with maximum force in a linear isokinetic leg press are still pending.Since different testing devices produce different relationships and rotational isokinetic measurements show conflicting results,further evidence is needed.Methods We investigated the correlation of isokinetic leg press force at 0.1 m/s and 0.7 m/s with squat 1RM and jumping performance in different vertical jumps.Results The results show medium to strong,significant correlations for isokinetic force at 0.1 m/s with squat-and counter-movement-jump performance,whereas isokinetic force at 0.7 m/s showed strong,significant correlations for both jumping tests.Drop jump performance(dropping heights:20,30,40,and 50 cm,respectively)reveals weak to medium,significant correlations with isokinetic force at 0.1 m/s and weak,significant correlations with isokinetic force at 0.7 m/s.Squat 1RM displays strong relationships to isokinetic force with greater coefficients regarding higher movement speed in the isokinetic condition.Conclusion The maximum strength of the leg extensors displays a basic requirement for vertical jumping with great motion in knee-and hip-joints and should be considered in training programs.For vertical jumps that are mainly generated via ankle motion,maximum strength of knee-and hip-extensors plays an indirect role to guarantee for performance-enhancing mechanisms.Additionally,in strength testing,different manifestations of strength performance should carefully be taken into account. | Sebastian Möck Stefan Erlewein Christoph Mickel Klaus Wirth | 2022 | Journal of Science in Sport and Exercise2022，4，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员