External Cueing Influences Drop Jump Performance in Trained Young Soccer Players

The aim of the study was to determine the effects of short-term (4 weeks, twice a week: 8 sessions) plyometric training on agility, jump, and repeated sprint performance in female soccer players. The study comprised 17 females performing this sports discipline. The players were randomly divided into two groups: with plyometric training (PLY) and the control (CON). All players followed the same training program, but the PLY group also performed plyometric exercises. Tests used to evaluate physical performance were carried out immediately before and after PLY. After implementing the short PLY training, significant improvement in jump performance (squat jump: p = 0.04, ES = 0.48, countermovement jump: p = 0.009, ES = 0.42) and agility (p = 0.003, ES = 0.7) was noted in the PLY group. In the CON group, no significant (p > 0.05) changes in physical performance were observed. In contrast, PLY did not improve repeated sprint performance (p > 0.05) among female soccer players. In our research, it was shown that PLY can also be effective when performed for only 4 weeks instead of the 6–12 weeks typically applied.

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The Effects of Muscle Strength Imbalance of Lower-Extremity on Countermovement Jump Performance and Dynamic Balance in Youth Soccer Players

Journal of Coaching Development ◽

10.47684/jcd.2021.03.23.1.107 ◽

2021 ◽

Vol 23 (1) ◽

pp. 107-118

Author(s):

Hyo-Cheol Lee ◽

Hee-Jeong Son

Keyword(s):

Muscle Strength ◽

Lower Extremity ◽

Dynamic Balance ◽

Soccer Players ◽

Countermovement Jump ◽

Jump Performance ◽

Youth Soccer

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Can Squat Jump Performance Differentiate Starters vs. Nonstarters in Division I Female Soccer Players?

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0000000000002053 ◽

2018 ◽

Vol 32 (8) ◽

pp. 2348-2355 ◽

Cited By ~ 1

Author(s):

Mitchel A. Magrini ◽

Ryan J. Colquhoun ◽

John H. Sellers ◽

Eric C. Conchola ◽

Garrett M. Hester ◽

...

Keyword(s):

Division I ◽

Soccer Players ◽

Jump Performance ◽

Squat Jump

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Changes of Whole-Body Power, Muscle Function, and Jump Performance With Prolonged Cycling to Exhaustion

International Journal of Sports Physiology and Performance ◽

10.1123/ijspp.7.4.332 ◽

2012 ◽

Vol 7 (4) ◽

pp. 332-339 ◽

Cited By ~ 6

Author(s):

Jordan P.R. McIntyre ◽

Grant A. Mawston ◽

Simeon P. Cairns

Keyword(s):

Performance Measures ◽

Muscle Function ◽

Perceived Exertion ◽

Rest Period ◽

Whole Body ◽

Peak Power Output ◽

Time To Exhaustion ◽

Drop Jump ◽

Jump Performance ◽

Isokinetic Torque

Purpose:To quantify how whole-body power, muscle-function, and jump-performance measures change during prolonged cycling and recovery and determine whether there are relationships between the different fatigue measures.Methods:Ten competitive or recreationally active male cyclists underwent repeated 20-min stages of prolonged cycling at 70% VO2peak until exhaustion. Whole-body peak power output (PPO) was assessed using an all-out 30-s sprint 17 min into each cycle stage. Ratings of perceived exertion (RPE) were recorded throughout. Isometric and isokinetic muscle-function tests were made between cycle stages, over ~6 min, and during 30-min recovery. Drop-jump measures were tested at exhaustion and during recovery.Results:PPO initially increased or was maintained in some subjects but fell to 81% of maximum at exhaustion. RPE was near maximal (18.7) at exhaustion, with the time to exhaustion related to the rate of rise of RPE. PPO first started to decline only when RPE exceeded 16 (ie, hard). Peak isometric and concentric isokinetic torque (180°/s) for the quadriceps fell to 86% and 83% of pretest at exhaustion, respectively. In contrast, the peak concentric isokinetic torque (180°/s) of the hamstrings increased by 10% before declining to 93% of maximum. Jump height fell to 92% of pretest at exhaustion and was correlated with the decline in PPO (r = .79). Muscle-function and jump-performance measures did not recover over the 30-min postexercise rest period.Conclusions:At exhaustion, whole-body power, muscle-function, and jump-performance measures had all fallen by 7–19%. PPO and drop-jump decrements were linearly correlated and are appropriate measures of maximal performance.

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Effects of Individualized Versus Traditional Power Training on Strength, Power, Jump Performances, and Body Composition in Young Male Nordic Athletes

International Journal of Sports Physiology and Performance ◽

10.1123/ijspp.2021-0074 ◽

2021 ◽

pp. 1-8

Author(s):

Olaf Prieske ◽

Helmi Chaabene ◽

Niclas Kullmann ◽

Urs Granacher

Keyword(s):

Body Composition ◽

Muscle Strength ◽

Young Male ◽

Drop Jump ◽

Power Training ◽

Strength Index ◽

Jump Performance ◽

Back Squat ◽

Main Effects ◽

Regular Training

Purpose: This study aimed to examine the effects of individualized-load power training (IPT) versus traditional moderate-load power training (TPT) on strength, power, jump performance, and body composition in elite young Nordic athletes. Methods: In a randomized crossover design, 10 young male athletes (ski jumpers, Nordic combined athletes) age 17.5 (0.6) years (biological maturity status: +3.5 y postpeak height velocity) who competed on a national or international level performed 5 weeks of IPT (4 × 5 repetitions at 49%–72% 1-repetiton maximum [RM]) and TPT (5 × 5 repetitions at 50%–60% 1-RM) in addition to their regular training. Testing before, between, and after both training blocks comprised the assessment of muscle strength (loaded back squat 3-RM), power (maximal loaded back squat power), jump performance (eg, drop-jump height, reactive strength index), and body composition (eg, skeletal muscle mass). Results: Significant, large-size main effects for time were found for muscle strength (P < .01; g = 2.7), reactive strength index (P = .03; g = 1.6), and drop-jump height (P = .02; g = 1.9) irrespective of the training condition (IPT, TPT). No significant time-by-condition interactions were observed. For measures of body composition, no significant main effects of condition and time or time-by-condition interactions were found. Conclusions: Our findings demonstrate that short-term IPT and TPT at moderate loads in addition to regular training were equally effective in improving measures of muscle strength (loaded back squat 3-RM) and vertical-jump performance (reactive strength index, drop jump, and height) in young Nordic athletes.

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Strength training in professional soccer: effects on short-sprint and jump performance

International Journal of Sports Medicine ◽

10.1055/a-1653-7350 ◽

2021 ◽

Author(s):

Javier Nuñez ◽

Luis Suarez-Arrones ◽

Moisés de Hoyo ◽

Irineu Loturco

Keyword(s):

Strength Training ◽

Meta Analysis ◽

Vertical Jump ◽

Soccer Players ◽

Validity And Reliability ◽

Jump Performance ◽

Training Strategy ◽

Performance Improvements ◽

Professional Soccer ◽

Training Schemes

Several studies have confirmed the efficacy of strength training to maximize soccer player performance during competition. The aim of this meta-analysis was to determine the effects of different strength training protocols on short-sprint and vertical jump performance of professional soccer players from the first division of their countries. The following inclusion criteria were employed for the analysis: (a) randomized studies; (b) high validity and reliability instruments; (c) studies published in a high-quality peer-reviewed journal; (d) studies involving professional soccer players from the first division; (e) studies with descriptions of strength training programs; and (f) studies where countermovement jump and 10-m sprint time were measured pre and post training. Overall, the different strength-oriented training schemes produced similar performance improvements, which seem not to depend on the training strategy. Strength training appears to have a lower effect when applied during in-season than when applied in pre-season periods in first division soccer players. In this meta-analysis it is not possible to confirm that strength training in isolation is capable of improving the short-sprint and jump performance of elite soccer players. The congested fixture schedule and, thus, the limited time to perform complementary (non-specific) training sessions, may contribute to these reduced effects.

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