Force-velocity-power profiling of maximal effort sprinting, jumping and hip thrusting: Exploring the importance of force orientation specificity for assessing neuromuscular function

2021 ◽  
pp. 1-8
Author(s):  
Nicklas Junge ◽  
Aske Lundsgaard ◽  
Mathias Foged Hansen ◽  
Pierre Samozino ◽  
Jean-Benoit Morin ◽  
...  
Keyword(s):  
Neuromuscular Function ◽  
Power Profiling ◽  
Force Velocity ◽  
Orientation Specificity ◽  
Maximal Effort

scholarly journals Quercetin Supplementation Improves Neuromuscular Function Recovery from Muscle Damage

Nutrients ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2850
Author(s):  
Ilenia Bazzucchi ◽  
Federica Patrizio ◽  
Roberta Ceci ◽  
Guglielmo Duranti ◽  
Stefania Sabatini ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Eccentric Exercise ◽  
Biochemical Parameters ◽  
Strength Loss ◽  
Neuromuscular Function ◽  
Double Blind ◽  
Maximal Voluntary Isometric Contraction ◽  
Velocity Relationship ◽  
Force Velocity ◽  
Exercise Induced

This study was aimed at investigating whether quercetin (Q) may improve the recovery of neuromuscular function and biochemical parameters in the 7 days following an eccentric exercise-induced muscle damage (EEIMD). Sixteen men (25.9 ± 3.3 y) ingested Q (1000 mg/day) or placebo (PLA) for 14 days following a double-blind crossover study design. A neuromuscular (NM) test was performed pre–post, 24 h, 48 h, 72 h, 96 h and 7 days after an intense eccentric exercise. The force–velocity relationship of the elbow flexor muscles and their maximal voluntary isometric contraction (MVIC) were recorded simultaneously to the electromyographic signals (EMG). Pain, joint angle, arm circumference, plasma creatine kinase (CK) and lactate-dehydrogenase (LDH) were also assessed. The results showed that Q supplementation significantly attenuated the strength loss compared to PLA. During the recovery, force–velocity relationship and mean fibers conduction velocity (MFCV) persisted significantly less when participants consumed PLA rather than Q, especially at the highest angular velocities (p < 0.02). A greater increase in biomarkers of damage was also evident in PLA with respect to Q. Q supplementation for 14 days seems able to ameliorate the recovery of eccentric exercise-induced weakness, neuromuscular function impairment and biochemical parameters increase probably due to its strong anti-inflammatory and antioxidant action.

Impact of External Resistance and Maximal Effort on Force-Velocity Characteristics of the Knee Extensors During Strengthening Exercise

2013 ◽  
Vol 27 (4) ◽  
pp. 1118-1127 ◽  
Author(s):  
Evelien Van Roie ◽  
Ivan Bautmans ◽  
Steven Boonen ◽  
Walter Coudyzer ◽  
Eva Kennis ◽  
...  
Keyword(s):  
Knee Extensors ◽  
External Resistance ◽  
Strengthening Exercise ◽  
Force Velocity ◽  
Maximal Effort

scholarly journals The reliability of isoinertial force–velocity–power profiling and maximal strength assessment in youth

2015 ◽  
Vol 14 (1) ◽  
pp. 68-80 ◽  
Author(s):  
César M.P. Meylan ◽  
John B. Cronin ◽  
Jon L. Oliver ◽  
Michael M.G. Hughes ◽  
Boris Jidovtseff ◽  
...  
Keyword(s):  
Maximal Strength ◽  
Strength Assessment ◽  
Power Profiling ◽  
Force Velocity

scholarly journals Comparing Muscle Function of Children and Adults: Effects of Scaling for Muscle Size

2002 ◽  
Vol 14 (4) ◽  
pp. 369-376 ◽  
Author(s):  
Ursula Barrett ◽  
Drew Harrison
Keyword(s):  
Muscle Strength ◽  
Muscle Function ◽  
Early Adulthood ◽  
Muscle Volume ◽  
Muscle Size ◽  
Thigh Muscle ◽  
Isokinetic Dynamometer ◽  
Force Velocity ◽  
The Mean ◽  
Maximal Effort

This study examined the force-velocity and power-velocity relationships of the quadriceps muscles of children and adults. Measurements of muscle function were collected using the Con-Trex isokinetic dynamometer. Twenty adults and twenty children performed maximal effort knee extensions at nine different velocities. The mean force-velocity curves of children and adults revealed obvious differences between the groups. The curves remained different following corrections of torque for CSA and velocity for length. ANOVA revealed significant differences in the uncorrected values of power between the two groups. When power values were corrected for lean thigh muscle volume, no significant differences were found between the groups. These findings suggest that differences in muscle strength between children and adults are a function of muscle size and imply that muscle function remains relatively unchanged from childhood to early adulthood.

Reliability of horizontal force–velocity–power profiling during short sprint-running accelerations using radar technology

2017 ◽  
Vol 18 (1) ◽  
pp. 88-99 ◽  
Author(s):  
Kim David Simperingham ◽  
John B. Cronin ◽  
Simon N. Pearson ◽  
Angus Ross
Keyword(s):  
Horizontal Force ◽  
Sprint Running ◽  
Power Profiling ◽  
Force Velocity

scholarly journals Reliability of Sprint Force-Velocity-Power Profiles Obtained with KiSprint System

2021 ◽  
pp. 357-364
Author(s):  
Nejc Šarabon ◽  
Žiga Kozinc ◽  
Amador Garcia Ramos ◽  
Olivera M. Knežević ◽  
Milan Čoh ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Ground Reaction Forces ◽  
Relative Reliability ◽  
Future Studies ◽  
Reaction Forces ◽  
Force Velocity ◽  
Individualized Training ◽  
High Level ◽  
Maximal Effort ◽  
Absolute Reliability

This study aimed to assess the within- and between-session reliability of the KiSprint system for determining force-velocity-power (FVP) profiling during sprint running. Thirty (23 males, 7 females; 18.7 ± 2.6 years;) young high-level sprinters performed maximal effort sprints in two sessions separated by one week. Split times (5, 10, 20 and 30 m), which were recorded with a laser distance meter (a component of the KiSprint system), were used to determine the horizontal FVP profile using the Samozino’s field-based method. This method assesses the FVP relationships through estimates of the step-averaged ground reaction forces in sagittal plane during sprint acceleration using only anthropometric and spatiotemporal (split times) data. We also calculated the maximal theoretical power, force and velocity capabilities and the slope of the FV relationship, the maximal ratio of horizontal-to-resultant force (RF), and the decrease in the RF (DRF). Overall, the results showed moderate or good to excellent within- and between-session reliability for all variables (ICC > 0.75; CV < 10 %), with the exception of FV slope and DRF that showed low relative reliability (ICC = 0.47-0.48 within session, 0.31-0.33 between-session) and unacceptable between-session absolute reliability values (CV = 10.9-11.1 %). Future studies are needed to optimize the protocol in order to maximize the reliability of the FVP variables, especially when practitioners are interested in the FV slope and DRF. In summary, our results question the utility of the sprint-based FVP profiling for individualized training prescription, since the reliability of the FV slope and D RF variables is highly questionable.

scholarly journals The reliability of force-velocity-power profiling during over-ground sprinting in children and adolescents

2019 ◽  
Vol 37 (18) ◽  
pp. 2131-2137
Author(s):  
A. Runacres ◽  
N.E. Bezodis ◽  
K.A. Mackintosh ◽  
M.A. McNarry
Keyword(s):  
Children And Adolescents ◽  
Power Profiling ◽  
Force Velocity

scholarly journals Countermovement-Jump-Phase Characteristics of Senior and Academy Rugby League Players

2017 ◽  
Vol 12 (6) ◽  
pp. 803-811 ◽  
Author(s):  
John J. McMahon ◽  
Shannon Murphy ◽  
Sophie J.E. Rej ◽  
Paul Comfort
Keyword(s):  
Movement Time ◽  
Rugby League ◽  
Neuromuscular Function ◽  
Countermovement Jump ◽  
Temporal Phase ◽  
Total Movement ◽  
Hip Extension ◽  
Total Movement Time ◽  
Maximal Effort ◽  
Insight Into

Purpose:Gross measures of countermovement-jump (CMJ) performance are commonly used to track maturational changes in neuromuscular function in rugby league (RL). The purpose of this study was to conduct both a gross and a more detailed temporal-phase analysis of the CMJ performances of senior and academy RL players, to provide greater insight into how neuromuscular function differs between these groups.Methods:Twenty senior and 14 academy (under-19) male RL players performed 3 maximal-effort CMJs on a force platform, with forward dynamics subsequently employed to allow gross performance measures and entire kinetic– and kinematic–time curves to be compared between groups.Results:Jump height (JH), reactive strength index modified, concentric displacement, and relative concentric impulse (C-IMP) were the only gross measures that were greater for senior players (d = 0.58–0.91) than for academy players. The relative force- and displacement–time curves were similar between groups, but the relative power– and velocity–time curves were greater (d = 0.59–0.97) for the senior players at 94–96% and 89–100% of the total movement time, respectively.Conclusions:The CMJ distinguished between senior and academy RL players, with seniors demonstrating greater JH through applying a larger C-IMP and thus achieving greater velocity throughout the majority of the concentric phase and at takeoff. Therefore, academy RL players should train to improve triple (ie, ankle, knee, and hip) extension velocity during the CMJ to bring their JH scores in line with those attained by senior players.

Horizontal Force-Velocity-Power Profiling of Rugby Players

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Casey M. Watkins ◽  
Adam Storey ◽  
Michael R. McGuigan ◽  
Paul Downes ◽  
Nicholas D. Gill
Keyword(s):  
Horizontal Force ◽  
Power Profiling ◽  
Force Velocity ◽  
Rugby Players
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