Abstract：
:Previous research suggests high impact forces generated during landings contribute to noncontact anterior cruciate ligament (ACL) injuries. In women, neuromuscular differences appear to modify the ability to dissipate landing forces when compared to men. This study examined peak vertical impact forces (F(p)) and rate of force development (RFD) following a 9-week, low-intensity (simple jump-landing-jump tasks) and volume (number of foot contacts per workout) plyometric-based knee ligament injury prevention (KLIP) program. Female subjects were randomly assigned into control (n = 14) and treatment (n = 14) groups. Treatment subjects attended KLIP sessions twice a week for 9 weeks, and control subjects received no intervention. Ground reaction forces (F(p) and RFD) generated during a step-land protocol were assessed at study onset and termination. Significant reductions in F(p) (p = 0.0004) and RFD (p = 0.0205) were observed in the treatment group. Our results indicate that 9 weeks of KLIP training altered landing strategies in women to lower F(p) and RFD. These changes are considered conducive to a reduced risk of knee injury while landing.
journal_name
J Strength Cond Resjournal_title
Journal of strength and conditioning researchauthors
Irmischer BS,Harris C,Pfeiffer RP,DeBeliso MA,Adams KJ,Shea KGdoi
10.1519/R-13473.1keywords:
subject
Has Abstractpub_date
2004-11-01 00:00:00pages
703-7issue
4eissn
1064-8011issn
1533-4287pii
R-13473journal_volume
18pub_type
临床试验,杂志文章,随机对照试验abstract：:Periodization is known to improve training adaptations but the most effective periodization approach for muscular strength development for a wide variety of populations is yet to be determined. This systematic review and meta-analysis examined all studies directly comparing linear and undulating periodized resistance ...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,meta分析,评审
doi：10.1519/JSC.0000000000000712
更新日期：2015-04-01 00:00:00
abstract：:The bench press exercise exists in multiple forms including the machine and free weight bench press. It is not clear though how each mode differs in its effect on muscle activation. The purpose of this study was to compare muscle activation of the anterior deltoid, medial deltoid, and pectoralis major during a Smith m...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e3181cc2237
更新日期：2010-03-01 00:00:00
abstract：:In practice, the Bruce protocol is the most commonly used treadmill protocol to assess maximal oxygen consumption (V(.-)O2max). It has been suggested that a running protocol (e.g., Astrand) may elicit a comparatively higher V(.-)O2max and different cardiorespiratory responses when applied to moderately trained runners...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/R-21176.1
更新日期：2007-11-01 00:00:00
abstract：:Injuries suffered by student athletes not only affect their physical ability to perform in sport but also have psychological effects as well. The purpose of this study was to examine student athletes' perceptions, expectations, and satisfaction of the social support provided by their strength and conditioning coach (S...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e31822e008b
更新日期：2012-04-01 00:00:00
abstract：:The purpose of this study was to compare the effects of an experimental versus traditional military run training on 2-mile run ability in Army Reserve Officer Training Corps (ROTC) cadets. Fifty college-aged cadets were randomly placed into two groups and trained for four weeks with either an experimental running prog...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000002176
更新日期：2017-07-31 00:00:00
abstract：:Judo is a combat sport in which the athletes attempt to hold and control their adversary through gripping techniques (kumi-kata) to apply opportune throwing techniques (nage-waza). Twelve male judo athletes, representing national teams, were recruited to investigate the changes in the maximal isometric strength in bot...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e318238ebac
更新日期：2012-07-01 00:00:00
abstract：:The purpose of this study was to examine the changes to block start and early acceleration sprint kinematics with resisted sled towing. Ten male sprinters performed 12 sprints (four each of unresisted and approximately 10 and 20% body mass [BM]) for 10 m from a block start. Two-dimensional high-speed video footage (25...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e31818746fe
更新日期：2008-11-01 00:00:00
abstract：:The purpose of this study was to describe the physiological profile of responders (>20 mmol.kg(-1) dry weight [dw] increase in total intramuscular creatine monohydrate [Cr] + phosphorylated creatine [PCr]) versus nonresponders (<10 mmol.kg(-1) dw increase) to a 5-day Cr load (0.3 g.kg(-1).d(-1)) in 11 healthy men (mea...
journal_title：Journal of strength and conditioning research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1519/12392.1
更新日期：2004-08-01 00:00:00
abstract：:Low vitamin D, commonly assessed as serum 25-hydroxyvitamin D (25OHD), is associated with the development of many age-related chronic diseases. A positive relationship exists between elevated 25OHD and muscle synthesis, strength, power, and decreased body fat in elderly individuals. However, these findings have not be...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e3182a35ed0
更新日期：2014-03-01 00:00:00
abstract：:Changes in many aspects of physical capacity and athletic performance have been documented through the course of a competitive season in collegiate athletes. Movement pattern quality as measured by the functional movement screen (FMS) has recently been linked to performance and injury risk. The purpose of this study w...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000000506
更新日期：2014-11-01 00:00:00
abstract：:This study examined the effects of a kettlebell training program on aerobic capacity. Seventeen female National Collegiate Athletic Association Division I collegiate soccer players (age: 19.7 ± 1.0 years, height: 166.1 ± 6.4 cm, weight: 64.2 ± 8.2 kg) completed a graded exercise test to determine maximal oxygen consum...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000000845
更新日期：2015-07-01 00:00:00
abstract：:Previous studies have shown that low-intensity resistance exercises with vascular occlusion and slow movement effectively increase muscular size and strength. Researchers have speculated that local hypoxia by occlusion and slow movement may contribute to such adaptations via promoting anabolic hormone secretions by th...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e3182281c69
更新日期：2012-03-01 00:00:00
abstract：:According to the American College of Sports Medicine (1), there is limited information about when to stretch during an exercise session. The purpose of this study was to determine if the placement of static stretching, either before or after a workout, would affect flexibility in the hip, knee, and ankle. Thirty colle...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/R-20736.1
更新日期：2007-08-01 00:00:00
abstract：:Adequate abdominal strength prevents work- and sports-related injuries and stabilizes the spine for athletic activities. The double-leg-lowering maneuver (DLLM) is a popular test to assess abdominal strength because of its simplicity; however, its validity and reliability have not been studied thoroughly. To determine...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/R-16664.1
更新日期：2005-11-01 00:00:00
abstract：:Hester, GM, Pope, ZK, Sellers, JH, Thiele, RM, and DeFreitas, JM. Potentiation: Effect of ballistic and heavy exercise on vertical jump performance. J Strength Cond Res 31(3): 660-666, 2017-The purpose of this study was to compare the acute effects of heavy and ballistic conditioning protocols on vertical jump perform...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0000000000001285
更新日期：2017-03-01 00:00:00
abstract：:The effect of consuming meals of different macronutrient content on substrate oxidation following resistance exercise was examined in 9 resistance-trained men (26.2 +/- 2.4 years). Subjects completed 3 resistance exercise bouts of 8 exercises and 1 warm-up set (50% of 10 repetition maximum [RM]), which were followed b...
journal_title：Journal of strength and conditioning research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1519/R-12762.1
更新日期：2004-05-01 00:00:00
abstract：:The present study investigated the effects of 2 different power training loading schemes in Brazilian elite soccer players. Thirty-two players participated in the study. Maximum dynamic strength (1RM) was evaluated before (B), at midpoint (i.e., after 3 weeks; T1), and after 6 weeks (T2) of a preseason strength/power ...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e3182772da6
更新日期：2013-07-01 00:00:00
abstract：:We evaluated a submaximal and maximal version of the Yo-Yo intermittent recovery level 1 children's (YYIR1C) test and the Andersen test for fitness and maximal heart rate assessments of children aged 6-10 years. Two repetitions of the YYIR1C and Andersen tests were carried out within 1 week by 6- to 7-year-olds and 8-...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e318270fd0b
更新日期：2013-06-01 00:00:00
abstract：:Muscle strain is one of the most common injuries, resulting in a decreased range of motion (ROM) in this group of muscles. Systematic stretching over a period of time is needed to increase the ROM. The purpose of this study was to determine if whole-body vibration (WBV) training would have a positive effect on flexibi...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/R-17064.1
更新日期：2006-02-01 00:00:00
abstract：:Evidence to support exercise training guidelines for patients who have undergone bariatric surgery is exceedingly limited. The purpose of this preliminary study was to evaluate the feasibility of a 12-week supervised, resistance training (RT) program and its short-term effects on physical fitness and functional streng...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000000667
更新日期：2015-03-01 00:00:00
abstract：:Nicholas, JC, McDonald, KA, Peeling, P, Jackson, B, Dimmock, JA, Alderson, JA, and Donnelly, CJ. Pole dancing for fitness: The physiological and metabolic demand of a 60-minute class. J Strength Cond Res 33(10): 2704-2710, 2019-Little is understood about the acute physiological or metabolic demand of pole dancing clas...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000002889
更新日期：2019-10-01 00:00:00
abstract：:The purpose of this study was to analyze the acute effect of static stretching on the performance of multiple sets in the bench press (BP) exercise. Fifteen men (26.2 ± 0.7 years, 72.4 ± 1.3 kg, 1.78 ± 0.1 m, 22.8 ± 0.3 kg·m) performed 4 sets of the BP exercise at 80% of 1 repetition maximum until concentric failure, ...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000000257
更新日期：2014-04-01 00:00:00
abstract：:Cooper, CN, Dabbs, NC, Davis, J, and Sauls, NM. Effects of lower-body muscular fatigue on vertical jump and balance performance. J Strength Cond Res 34(10): 2903-2910, 2020-Lower-body fatigue can lead to a decline in vertical jump (VJ) and balance performance due to decreased motor control and coordination. The purpos...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000002882
更新日期：2020-10-01 00:00:00
abstract：:Nikolaidis PT, Onywera VO, and Knechtle B. Running performance, nationality, sex, and age in the 10-km, half-marathon, marathon, and the 100-km ultramarathon IAAF 1999-2015. J Strength Cond Res 31(8): 2189-2207, 2017-The aim of this study was to examine the performance of the world's best runners in the 10-km, half-ma...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000001687
更新日期：2017-08-01 00:00:00
abstract：:The purpose of this study was to examine the effects of simultaneously delivering 2 channels of electromyostimulation (EMS) current using 2 different electrode arrangements. Ten men and 10 women university students had 4 reusable electrodes placed (2 proximal, 2 distal) medial and lateral on the quadriceps muscle grou...
journal_title：Journal of strength and conditioning research
pub_type： 临床试验,杂志文章
doi：
更新日期：2001-02-01 00:00:00
abstract：:The Smith machine (SM) (vertical motion of bar on fixed path; fixed-form exercise) and free weights (FWs) (free-form path) are commonly used strength training modes. Exercisers may need to alternate between types of equipment, depending on testing, training, rehabilitation, and/or the exercisers' goals. The purposes o...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/14433.1
更新日期：2005-02-01 00:00:00
abstract：:This cross-sectional study investigated the effects of participation in various sports on side-to-side (contralateral) differences in bone mineral density (BMD) of the upper and lower limbs. The BMD of the arms and legs was measured using dual energy X-ray absorptiometry. The subjects were 184 collegiate athletes, bot...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：
更新日期：2002-11-01 00:00:00
abstract：:The purpose of this study was to investigate the influence of weight distribution (WtD) asymmetry on the biomechanics of a barbell back squat. This study included 2 groups of trained individuals who were separated based on a WtD test (n = 14 in each group). They performed the barbell back squats with 2 resistance leve...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e318220e0a3
更新日期：2012-02-01 00:00:00
abstract：:It is generally thought that topical cooling can interfere with blood perfusion and may have positive effects on recovery from a traumatic challenge. This study examined the influence of topical cooling on muscle damage markers and hemodynamic changes during recovery from eccentric exercise. Eleven male subjects (age ...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e318267a22c
更新日期：2013-05-01 00:00:00
abstract：:Del Coso, J, Salinero, JJ, Lara, B, Gallo-Salazar, C, Areces, F, Herrero, D, and Puente, C. Polygenic profile and exercise-induced muscle damage by a competitive half-ironman. J Strength Cond Res 34(5): 1400-1408, 2020-To date, it is still unknown why some individuals develop higher levels of muscle damage than other ...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000002303
更新日期：2020-05-01 00:00:00
