Relationship between isometric force-time characteristics and dynamic performance pre- and post-training

The purpose of this article was to review the data on the relationship between multi-joint isometric strength test (IsoTest) force-time characteristics (peak force, rate of force development and impulse) and dynamic performance that is available in the current literature. Four electronic databases were searched using search terms related to IsoTest. Studies were considered eligible if they were original research studies that investigated the relationships between multi-joint IsoTest and performance of dynamic movements; published in peer-reviewed journals; had participants who were athletes or active individuals who participate in recreational sports or resistance training, with no restriction on sex; and had full text available. A total of 47 studies were selected. These studies showed significant small to large correlations between isometric bench press (IBP) force-time variables and upper body dynamic performances (r2 = 0.221 to 0.608, p < 0.05) and significant small to very large correlation between isometric squat (ISqT) (r2 = 0.085 to 0.746, p < 0.05) and isometric mid-thigh pull (IMTP) (r2 = 0.120 to 0.941, p < 0.05) force-time variables with lower body dynamic performances. IsoTest force-time characteristics were shown to have small to very large correlations with dynamic performances of the upper and lower limbs as well as performance of sporting movements (r2 = 0.118 to 0.700, p < 0.05). These data suggest that IsoTest force-time characteristics provide insights into the force production capability of athletes which give insight into dynamic performance capabilities.

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Relationships between Isometric Force-Time Characteristics and Dynamic Performance

Sports ◽

10.3390/sports5030068 ◽

2017 ◽

Vol 5 (3) ◽

pp. 68 ◽

Cited By ~ 8

Author(s):

◽

Keyword(s):

Isometric Force ◽

Dynamic Performance ◽

Force Time

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Eccentric Force-Velocity Characteristics during a Novel Squat Protocol in Trained Rugby Union Athletes—Pilot Study

Journal of Functional Morphology and Kinesiology ◽

10.3390/jfmk6020032 ◽

2021 ◽

Vol 6 (2) ◽

pp. 32

Author(s):

Conor McNeill ◽

C. Martyn Beaven ◽

Daniel T. McMaster ◽

Nicholas Gill

Keyword(s):

Pilot Study ◽

Dynamic Performance ◽

Intraclass Correlation ◽

Rugby Union ◽

Mean Velocity ◽

Force Development ◽

Back Squat ◽

Force Velocity ◽

Force Time ◽

Change In Mean

Eccentric strength characteristics have been shown to be important factors in physical performance. Many eccentric tests have been performed in isolation or with supramaximal loading. The purpose of this study was to investigate within- and between- session reliability of an incremental eccentric back squat protocol. Force plates and a linear position transducer captured force-time-displacement data across six loading conditions, separated by at least seven days. The reliability of eccentric specific measurements was assessed using coefficient of variation (CV), change in mean, and intraclass correlation coefficient (ICC). Eccentric peak force demonstrated good ICC (≥0.82) and TE (≤7.3%) for each load. Variables based on mean data were generally less reliable (e.g., mean rate of force development, mean force, mean velocity). This novel protocol meets acceptable levels of reliability for different eccentric-specific measurements although the extent to which these variables affect dynamic performance requires further research.

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The Relationship Between Isometric Force-Time Curve Characteristics and Club Head Speed in Recreational Golfers

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0b013e31826791bf ◽

2012 ◽

Vol 26 (10) ◽

pp. 2685-2697 ◽

Cited By ~ 26

Author(s):

Brian K. Leary ◽

Jason Statler ◽

Britton Hopkins ◽

Rachael Fitzwater ◽

Tucker Kesling ◽

...

Keyword(s):

Isometric Force ◽

Time Curve ◽

Club Head ◽

Force Time ◽

The Relationship ◽

Recreational Golfers

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Reliability of Maximum Isometric Force-Time Parameters during a Leg Press Test in Pubertal Basketball Players

Pediatric Exercise Science ◽

10.1123/pes.14.2.193 ◽

2002 ◽

Vol 14 (2) ◽

pp. 193-201 ◽

Cited By ~ 1

Author(s):

Panagiotis Ioakimidis ◽

Vasilios Gerodimos ◽

Eleftherios Kellis ◽

Spiros Kellis

Keyword(s):

Isometric Force ◽

Intraclass Correlation ◽

Correlation Coefficients ◽

Basketball Players ◽

Leg Press ◽

Maximal Force ◽

Maximum Isometric Force ◽

Time Parameters ◽

Relative Scale ◽

Force Time

Fifteen young basketball players (aged 14.4 – 0.5 yrs) underwent two identical testing sessions spaced one week apart, to determine the reliability of maximum isometric force and force-time parameters during a maximal bilateral isometric leg press effort. The maximal isometric force (MIF), the ratio of maximal force to time (TMIF) to attain maximal force (ARMIF), starting strength (F50), and on a relative scale the time taken to increase the force from 10% to 30%, 60%, and 90% of maximal force were calculated. High intraclass correlation coefficients (ICC) were found for MIF (0.96), ARMIF (0.85), and F50 (0.90). On the relative scale, the ICCs for the times to produce 30%, 60%, and 90% of maximum force were 0.94, 0.95, 0.95, respectively. The present results indicate that maximum isometric force and the force-time parameters during a bilateral leg press can be measured reliably in pubertal basketball players.

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Relationship Between Isometric Force–Time Characteristics and Sprint Kayaking Performance

International Journal of Sports Physiology and Performance ◽

10.1123/ijspp.2019-0607 ◽

2020 ◽

pp. 1-6

Author(s):

Danny Lum ◽

Abdul Rashid Aziz

Keyword(s):

Bench Press ◽

Isometric Force ◽

Rate Of Force Development ◽

Isometric Strength ◽

Mean Power ◽

Force Development ◽

Peak Rate ◽

Time To Completion ◽

Strength Tests ◽

Force Time

Force–time characteristics obtained during isometric strength tests are significantly correlated to various sporting movements. However, data on the relationship between isometric force–time characteristics and sprint kayaking performance are lacking in the literature. Purpose: The purpose of the study was, therefore, to investigate the relationship between sprint kayaking performance with ergometer performance and measures from 3 isometric strength tests: isometric squat, isometric bench press, and isometric prone bench pull. Methods: A total of 23 sprint kayaking athletes performed all 3 tests, at 90° and 120° knee angles for isometric squat and at elbow angles for isometric bench press and isometric prone bench pull, and a 200-m sprint on-water to attain the fastest time-to-completion (OWTT) possible and on a kayak ergometer to attain the highest mean power (LABTT) possible. Results: There was a significant inverse correlation between OWTT and LABTT (r = −.90, P < .001). The peak forces achieved from all isometric strength tests were significantly correlated with time-to-completion for OWTT and mean power for LABTT (r = −.44 to −.88, P < .05 and .47 to .80, P < .05, respectively). OWTT was significantly correlated with the peak rate of force development during all isometric tests except for the isometric squat at a 120° knee angle (r = −.47 to −.62, P < .05). LABTT was significantly correlated with peak rate of force development from the isometric bench press and isometric prone bench pull (r = .64–.86, P < .01). Conclusion: Based on the observed strong correlations, the mean power attained during LABTT is a good predictor of OWTT time-to-completion. Furthermore, upper- and lower-body maximum strength and peak rate of force development are equally important for on-water and ergometer sprint kayaking performance.

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