Abstract:
:The purpose of this study was to investigate the effect of 4 different step detection thresholds (10, 15, 20, and 30% body mass [BM]) on the kinetics and kinematics of a youth population sprinting on a Woodway nonmotorized treadmill (NMT). A total of 16 male youth athletes sprinted 30 m from a split start position. Of the 15 variables measured, significant differences (p ≤ 0.05) were found in the measurement of 5 kinematic (step length, vertical displacement, contact time, eccentric, and concentric time) and 2 kinetic (vertical and leg stiffness) variables between the 10 vs. 20 and 30% BM step detection thresholds. Contact time was also significantly different (12%) between 15 vs. 30% BM step detection thresholds. In terms of reliability, the 15 and 30% BM step detection thresholds were found the most stable across all variables (average coefficient of variation ∼6.0%). Given this information, a step detection threshold of 15% BM is recommended for quantifying kinematic and kinetic variables on a NMT, as this threshold seems to account for signal variability appropriately without compromising reliability.
journal_name
J Strength Cond Resjournal_title
Journal of strength and conditioning researchauthors
Cronin JB,Rumpf MCdoi
10.1519/JSC.0000000000000497subject
Has Abstractpub_date
2014-10-01 00:00:00pages
2996-3000issue
10eissn
1064-8011issn
1533-4287pii
00124278-201410000-00038journal_volume
28pub_type
杂志文章abstract::Comfort, P, Williams, R, Suchomel, TJ, and Lake, JP. A comparison of catch phase force-time characteristics during clean derivatives from the knee. J Strength Cond Res 31(7): 1911-1918, 2017-The aim of this study was to compare load-absorption force-time characteristics of the clean from the knee (CK), power clean fro...
journal_title:Journal of strength and conditioning research
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doi:10.1519/JSC.0000000000001660
更新日期:2017-07-01 00:00:00
abstract::The aim of this study is to evaluate sprinting ability, density of acceleration, and speed dribbling ability of professional soccer players with respect to their positions.A total of 243 professional soccer players were examined. These soccer players are playing in different leagues of Turkey. The F-MARC test battery,...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0b013e318181fd90
更新日期:2008-09-01 00:00:00
abstract::Various physical demands are placed on soldiers, whose effectiveness and survivability depend on their combat-specific physical fitness. Because sport training programs involving weight-based training have proven effective, this study examined the value of such a program for short-term military training using combat-r...
journal_title:Journal of strength and conditioning research
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doi:10.1519/JSC.0b013e31816347b6
更新日期:2008-03-01 00:00:00
abstract::Folk, AL, Garcia, CA, Whitney, SH, and Kovacs, SJ. Relationship between strength and conditioning assessments and rowing performance in female collegiate athletes. J Strength Cond Res XX(X): 000-000, 2020-The purpose of this study was to examine the relationship between strength and conditioning variables and rowing p...
journal_title:Journal of strength and conditioning research
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doi:10.1519/JSC.0000000000003698
更新日期:2020-06-24 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000003367
更新日期:2019-09-25 00:00:00
abstract::The facilitative effect of physical activity on age-related decline is well documented. Specifically, it has been found to reduce the risk of dependency. However, physical activity programs for older adults should be carefully designed so that improvements in all aspects of movement and physical capacities are achieve...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0b013e3181bac36a
更新日期:2011-01-01 00:00:00
abstract::Strength augmentation has been demonstrated in resistance-trained men subsequent to 4 days of training abstinence. However, this phenomenon was exhibited in an unusual circumstance in which the exercise test (seated heel raise) primarily involved an isolated skeletal muscle (soleus) that is normally comprised almost e...
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更新日期:2004-11-01 00:00:00
abstract::Strenuous physical activity can result in exercise-induced muscle damage. The purpose of this study was to investigate the efficacy of a lower limb compression garment in accelerating recovery from a marathon run. Twenty four subjects (female, n = 7; male, n = 17) completed a marathon run before being assigned to a tr...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
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更新日期:2014-08-01 00:00:00
abstract::Young, WB and Murray, MP. Reliability of a field test of defending and attacking agility in Australian football and relationships to reactive strength. J Strength Cond Res 31(2): 509-516, 2017-Defending and attacking agility tests for Australian football do not exist, and it is unknown whether any physical qualities c...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2017-02-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
doi:10.1519/R-17835.1
更新日期:2006-05-01 00:00:00
abstract::A variety of training approaches have been shown to improve running economy in well-trained athletes. However, there is a paucity of data exploring lower-body determinants that may affect running economy and account for differences that may exist between genders. Sixty-three male and female distance runners were asses...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000000267
更新日期:2014-05-01 00:00:00
abstract::Di Mascio, M, Ade, J, Musham, C, Girard, O, and Bradley, PS. Soccer-specific reactive repeated-sprint ability in elite youth soccer players: maturation trends and association with various physical performance tests. J Strength Cond Res 34(12): 3538-3545, 2020-Repeated-sprint ability is an important physical prerequisi...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000002362
更新日期:2020-12-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000001321
更新日期:2016-08-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000003845
更新日期:2020-12-01 00:00:00
abstract::The purpose of this study was to compare anthropometric and athletic performance variables during the playing career of NCAA Division III college football players. Two hundred and eighty-nine college football players were assessed for height, body mass, body composition, 1-repetition-maximum (1RM) bench press, 1RM squ...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0b013e31821743df
更新日期:2011-09-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,评审
doi:10.1519/14813.1
更新日期:2004-11-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000000697
更新日期:2014-12-01 00:00:00
abstract:ABSTRACT:Bagley, L, Al-Shanti, N, Bradburn, S, Baig, O, Slevin, M, and McPhee, JS. Sex comparison of knee extensor size, strength, and fatigue adaptation to sprint interval training. J Strength Cond Res 35(1): 64-71, 2021-Regular sprint interval training (SIT) improves whole-body aerobic capacity and muscle oxidative p...
journal_title:Journal of strength and conditioning research
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journal_title:Journal of strength and conditioning research
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更新日期:2013-05-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2010-01-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
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更新日期:2013-11-01 00:00:00
abstract::Talpey, SW, Young, WB, and Beseler, B. Effect of instructions on selected jump squat variables. J Strength Cond Res 30(9): 2508-2513, 2016-The purpose of this study was to compare 2 instructions on the performance of selected variables in a jump squat (JS) exercise. The second purpose was to determine the relationship...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2016-09-01 00:00:00
abstract::The deadlift exercise is commonly performed to develop strength and power, and to train the lower-body and erector spinae muscle groups. However, little is known about the acute training effects of a hexagonal barbell vs. a straight barbell when performing deadlifts. Therefore, the purpose of this study was to examine...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0000000000001352
更新日期:2016-05-01 00:00:00
abstract::Krajewski, K, LeFavi, R, and Riemann, B. A biomechanical analysis of the effects of bouncing the barbell in the conventional deadlift. J Strength Cond Res 33(7S): S70-S77, 2019-The purpose of this study is to analyze biomechanical differences between the bounce and pause styles of deadlifting. Twenty physically active...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2019-07-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2015-06-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2019-08-01 00:00:00
abstract::This study evaluated the effects of 4 different weekly stretching protocols on the rate of gain and decline in hamstring flexibility over an 8-week period, across sex. Using a randomized single-blind design, 53 healthy subjects aged 18-46 years were assigned to 1 of 4 stretching protocols or a control group. The stret...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
doi:10.1519/JSC.0b013e31823b862a
更新日期:2012-08-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,meta分析,评审
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更新日期:2015-04-01 00:00:00
abstract::Bartolomei, S, Totti, V, Griggio, F, Malerba, C, Ciacci, S, Semprini, G, and Di Michele, R. Upper-body resistance exercise reduces time to recover after a high-volume bench press protocol in resistance-trained men. J Strength Cond Res XX(X): 000-000, 2018-The aim of this study was to compare the effects of active and ...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2019-03-04 00:00:00