Abstract：
:The purpose of this investigation was to examine the effects of a 5-week, low-cost unstable surface balance training program in sexagenarians. Nineteen men and women (60-68 years; 83.7 +/- SD kg) were randomly assigned to a control or training group. The training group performed various balance activities on air-filled rubber disks for 5 weeks. Each thrice-weekly session was supervised, and progression was based on proficiency. While in an upright position, static balance (length of path [LOP] of the center of pressure) was assessed in both eyes-open and eyes-closed states for each leg separately as well as for both legs. Participants also performed the timed up-and-go (TUG) test and completed the Activity-specific Balance Confidence (ABC) questionnaire. A significant group x time effect for the ABC questionnaire was found (p = 0.04). Tukey post hoc analysis indicates that the balance training program increased self-perceived balance confidence (p < 0.01). No significant group x time interactions were noted for TUG or LOP. Because no objective measure of balance or function was changed, the increase in ABC may be spurious. Unstable surface training may not be effective in improving balance among persons for whom balance is not problematic. However, the large number of acute training variables in such a program leaves opportunity for further research in this paradigm.
journal_name
J Strength Cond Resjournal_title
Journal of strength and conditioning researchauthors
Schilling BK,Falvo MJ,Karlage RE,Weiss LW,Lohnes CA,Chiu LZdoi
10.1519/JSC.0b013e3181918a83subject
Has Abstractpub_date
2009-07-01 00:00:00pages
1211-6issue
4eissn
1064-8011issn
1533-4287pii
00124278-200907000-00023journal_volume
23pub_type
杂志文章,随机对照试验abstract：:Weakley, JJS, Till, K, Darrall-Jones, J, Roe, GAB, Phibbs, PJ, Read, DB, and Jones, BL. Strength and conditioning practices in adolescent rugby players: relationship with changes in physical qualities. J Strength Cond Res 33(9): 2361-2369, 2019-Adolescent rugby players benefit from the implementation of resistance tra...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000001828
更新日期：2019-09-01 00:00:00
abstract：:Randell, AD, Cronin, JB, Keogh, JWL, Gill, ND, and Pedersen, MC. Reliability of performance velocity for jump squats under feedback and nonfeedback conditions. J Strength Cond Res 25(12): 3514-3518, 2011-Advancements in the monitoring of kinematic and kinetic variables during resistance training have resulted in the a...
journal_title：Journal of strength and conditioning research
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doi：10.1519/JSC.0b013e318216001f
更新日期：2011-12-01 00:00:00
abstract：:The aim of this study was to identify trends of changes in the structure and levels of motor effects among young women basketball players in 2006-2013. These changes were examined in the context of comprehensive development of functional, fitness-related, and technical fundamentals with respect to requirements of spec...
journal_title：Journal of strength and conditioning research
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doi：10.1519/JSC.0000000000000943
更新日期：2015-10-01 00:00:00
abstract：:Firefighters are required to perform a variety of strenuous occupational tasks that require high levels of both aerobic and anaerobic fitness. Thus, it is critical that firefighters train at an appropriate intensity to develop adequate levels of aerobic and anaerobic fitness. Circuit training is a unique training meth...
journal_title：Journal of strength and conditioning research
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doi：10.1519/JSC.0b013e31820da00c
更新日期：2011-10-01 00:00:00
abstract：:Resistance training is used to develop muscular strength and hypertrophy. Large muscle forces, in relation to the muscle's maximum force-generating ability, are required to elicit these adaptations. Previous biomechanical analyses of multi-joint resistance exercises provide estimates of muscle force but not relative m...
journal_title：Journal of strength and conditioning research
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doi：10.1519/JSC.0b013e31826791a7
更新日期：2012-10-01 00:00:00
abstract：:Athletes often need to both jump high and get off the ground quickly, but getting off the ground quickly can decrease the vertical ground reaction force (VGRF) impulse, impeding jump height. Energy stored in the muscle-tendon complex during the stretch-shortening cycle (SSC) may mitigate the effects of short ground co...
journal_title：Journal of strength and conditioning research
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更新日期：2015-11-01 00:00:00
abstract：:Currently, a submaximal protocol is used to measure cardiorespiratory fitness in firefighters by estimating their true aerobic capacity (V[Combining Dot Above]O2max); however, this submaximal test has not been cross-validated among firefighters. Thirty firefighters (85% male, 15% female), completed the submaximal prot...
journal_title：Journal of strength and conditioning research
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更新日期：2014-10-01 00:00:00
abstract：:García-Ramos, A, Haff, GG, Jiménez-Reyes, and P, Pérez-Castilla, A. Assessment of upper-body ballistic performance through the bench press throw exercise: Which velocity outcome provides the highest reliability? J Strength Cond Res 32(10): 2701-2707, 2018-This study aimed to compare the between-session reliability of ...
journal_title：Journal of strength and conditioning research
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doi：10.1519/JSC.0000000000002616
更新日期：2018-10-01 00:00:00
abstract：:Simão, R, Polito, M, de Salles, BF, Marinho, DA, Garrido, ND, Santos Junior, ERT, and Willardson, JM. Acute and long-term comparison of fixed vs. self-selected rest interval between sets on upper-body strength. J Strength Cond Res XX(X): 000-000, 2020-The effects of different rest interval durations between sets has b...
journal_title：Journal of strength and conditioning research
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更新日期：2020-08-18 00:00:00
abstract：:Flores, V, Becker, J, Burkhardt, E, and Cotter, J. Knee kinetics during squats of varying loads and depths in recreationally trained women. J Strength Cond Res 34(7): 1945-1952, 2020-The back squat exercise is typically practiced with varying squat depths and barbell loads. However, depth has been inconsistently defin...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2020-07-01 00:00:00
abstract：:The purpose of the present investigation was to describe the physiological profile of elite Iranian junior freestyle wrestlers. Seventy elite wrestlers (age 19.8 +/- 0.9 years) who were invited to the national training camps, based on their top 10 national ranking, participated in this study. The physiological profile...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e3181bb7350
更新日期：2009-11-01 00:00:00
abstract：:Concurrent training (CT) seems to impair training-induced muscle hypertrophy. This study compared the effects of CT, strength training (ST) and interval training (IT) on the muscle fiber cross-sectional area (CSA) response, and on the expression of selected genes involved in the myostatin (MSTN) signaling mRNA levels....
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：2014-11-01 00:00:00
abstract：:A nonlinear model of training responses was utilized to test whether a 2-phase taper could be more effective than a traditional linear taper. Simulations were conducted using model parameters previously determined in 6 nonathletes trained on a cycle ergometer (non-ATH) and 7 elite swimmers trained in sport-specific co...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e3181b3dfa1
更新日期：2009-09-01 00:00:00
abstract：:Schwanbeck, SR, Cornish, SM, Barss, T, and Chilibeck, PD. Effects of training with free weights versus machines on muscle mass, strength, free testosterone, and free cortisol levels. J Strength Cond Res 34(7): 1851-1859, 2020-Free weights offer a more unstable training environment, which enhances muscle recruitment, w...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2020-07-01 00:00:00
abstract：:Versteegh, TH, Dickey, JP, Emery, CA, Fischer, LK, MacDermid, JC, and Walton, DM. Evaluating the effects of a novel neuromuscular neck training device on multiplanar static and dynamic neck strength: A pilot study. J Strength Cond Res 34(3): 708-716, 2020-The neck serves an important function in damping the transferen...
journal_title：Journal of strength and conditioning research
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更新日期：2020-03-01 00:00:00
abstract：:Sixteen semiprofessional Australian football players performed running bouts at incremental velocities of 40, 60, 80, and 100% of their maximum velocity on a Woodway nonmotorized force treadmill. As running velocity increased from 40 to 60%, peak vertical and peak horizontal forces increased by 14.3% (effect size [ES]...
journal_title：Journal of strength and conditioning research
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更新日期：2011-04-01 00:00:00
abstract：:There are many tests available to coaches and practitioners who seek to identify a point during exercise when excess lactate is being produced or hyperventilation stimulated as a result of metabolic acidosis. This investigation sought to determine the relationship between performance and the first occurrence of excess...
journal_title：Journal of strength and conditioning research
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更新日期：2013-05-01 00:00:00
abstract：:We investigated the aerobic and anaerobic benefits of high-intensity interval training performed at a work-to-rest ratio of 1:2 because little performance enhancement data exist based on this ratio. Recreationally active male volunteers (21 years, 184 cm, 81.5 kg) were randomly assigned to a training (interval trainin...
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：2011-04-01 00:00:00
abstract：:The purpose of this study was to determine the reliability and validity of a portable force plate when analyzing jumping and landing tasks. Subjects performed 3 drop vertical jumps and 3 drop landings on both a standard strain gauge laboratory force plate and a portable force plate. In contrast to typical laboratory i...
journal_title：Journal of strength and conditioning research
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更新日期：2006-11-01 00:00:00
abstract：:Lower body positive pressure (LBPP) or antigravity treadmills are becoming increasingly popular in sports and rehabilitation settings. Running at a decreased body weight (BW) reduces metabolic cost, which can be offset by running at faster speeds. To date, however, little is known about how much faster someone must ru...
journal_title：Journal of strength and conditioning research
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更新日期：2015-03-01 00:00:00
abstract：:Lantis, DJ, Farrell, JW, III, Cantrell, GS, and Larson, RD. Eight weeks of high volume resistance training improves onset of blood lactate in trained individuals. J Strength Cond Res 31(8): 2176-2182, 2017-The purpose of this study was to determine if onset of blood lactate (OBLA) using the fixed at 4 mmol·L method co...
journal_title：Journal of strength and conditioning research
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更新日期：2017-08-01 00:00:00
abstract：:This study reports the average and SD of professional baseball players' cardiorespiratory endurance, maximum oxygen consumption, oxygen consumption during anaerobic threshold, maximum oxygen consumption of anaerobic threshold %, maximum heart rate, and heart rate of anaerobic threshold. We also report the comparison b...
journal_title：Journal of strength and conditioning research
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更新日期：2014-11-01 00:00:00
abstract：:Flatt, AA, Esco, MR, Allen, JR, Robinson, JB, Earley, RL, Fedewa, MV, Bragg, A, Keith, CM, and Wingo, JE. Heart rate variability and training load among National Collegiate Athletic Association Division 1 college football players throughout spring camp. J Strength Cond Res 32(11): 3127-3134, 2018-The purpose of this s...
journal_title：Journal of strength and conditioning research
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更新日期：2018-11-01 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
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更新日期：2019-07-01 00:00:00
abstract：:This study was carried out to compare cardiac structure and function and blood lipids among Strongmen, sedentary controls, and marathoners. Echocardiography was performed, and endothelial function, blood lipids and maximal oxygen uptake were measured in 27 Caucasian adult men (8 Strongmen, 10 marathoners, 9 controls)....
journal_title：Journal of strength and conditioning research
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更新日期：2011-10-01 00:00:00
abstract：:The ability to complete high-intensity running is essential for soccer. The Yo-Yo Intermittent Recovery Test Level 2 (YYIRT2) can measure this capacity, but there is limited information regarding this assessment in collegiate female soccer players. This study investigated the YYIRT2 as a measure of high-intensity runn...
journal_title：Journal of strength and conditioning research
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更新日期：2017-10-01 00:00:00
abstract：:Knechtle, B and Nikolaidis, PT. The age of peak marathon performance in cross-country skiing-the "Engadin Ski Marathon." J Strength Cond Res 32(4): 1131-1136, 2018-The age of the best endurance performance has been well investigated in flat city running marathons. However, we have no knowledge about the age of peak ma...
journal_title：Journal of strength and conditioning research
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更新日期：2018-04-01 00:00:00
abstract：:This study aimed to compare functional movement screen (FMS [TM]) scores and Beighton and Horan joint mobility index (BHJMI) scores among pubescence in adolescent athletes. Sixty-six adolescents between the ages of 8 and 14 voluntarily participated in this study. The participants performed the tests of the BHJMI, the ...
journal_title：Journal of strength and conditioning research
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更新日期：2013-10-01 00:00:00
abstract：:Barbell back squats are a popular exercise for developing lower extremity strength and power. However, this exercise has potential injury risks, particularly to the lumbar spine, pelvis, and hip joint. Previous literature suggests heel wedges as a means of favorably adjusting trunk and pelvis kinematics with the inten...
journal_title：Journal of strength and conditioning research
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更新日期：2017-06-01 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
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更新日期：2014-11-01 00:00:00
