Muscle Strength Development in the Pre- and Post-Pubescent Age

Author(s):  
J. Vrijens
1961 ◽  
Vol 16 (5) ◽  
pp. 873-877 ◽  
Author(s):  
Ellen R. Vanderhoof ◽  
Charles J. Imig ◽  
H. M. Hines

Studies were carried out to investigate the effect of hand grip strength and/or endurance improvement on blood flow through the muscles involved. One group of subjects trained for strength development and another for endurance development throughout a 29-week period. At regular intervals blood flow was measured under resting conditions and also following three different test exercise stresses designed to test the functional capacity of the vascular bed. Subjects who participated in the strength training program made significant gains in strength but not in endurance, while those subjects who trained for endurance improved in both strength and endurance. Resting blood flow was not changed significantly as a result of either training program. Significant changes in the blood flow response to the test exercise stresses were noted; these changes were associated with endurance rather than strength improvement. Submitted on April 3, 1961


2006 ◽  
Vol 34 (3) ◽  
pp. 375-384 ◽  
Author(s):  
Sue D. Barber-Westin ◽  
Frank R. Noyes ◽  
Marc Galloway

2021 ◽  
Vol 6 (6) ◽  
pp. 331-336
Author(s):  
O. S. Slavityak ◽  
◽  
N. V. Kovaleva ◽  
O. Yu. Bychkov ◽  
A. O. Tvelina ◽  
...  

The purpose of the study was the analysis of the growth dynamics of power indicators of athletes-bodybuilders at the stage of specialized basic training. Materials and methods. The study was conducted from March to the end of June (4 months) 2021. It involved 60 athletes aged from 18 to 19 years. Three research groups were formed, 20 athletes in each. These groups of athletes were divided by the usual sample method and by age. Qualification and anthropometric characteristics did not differ significantly. The only difference was in the proposed training programs. Theoretical analysis of scientific and methodological literature was carried out. Test control method for determining the maximum muscle strength of athletes to assess the initial level of muscle strength development in the surveyed contingent and determine the characteristics of its dynamics, was used. The obtained data were used to calculate the indicators of the value of the training load of athletes. In addition, method for quantitative assessment of athletes' physical load was used. The mathematical processing of research results was carried out using the software packages IBM SPSS Statistics 20. Results and discussion. The research results indicate that the values of the training loads indicators of bodybuilders and the nature of their changes in conditions of the same level of athletes' fitness and the structure of the training session depend on the characteristics of the selected training means (training programs). The analysis of the results obtained shows that under the conditions of the second variant of the training program, the indicators of the working mass of the athletes' equipment change more significantly during the entire research period. A similar tendency is observed when monitoring the load volume indicators, despite the fact that the most significant increase in this indicator among bodybuilders when performing formative exercises was obtained under the conditions of using the third variant of the training program, using the “premature fatigue” method. Conclusion. The growth rates of the strength capabilities of the main muscle groups turned out to be the highest among bodybuilders of the second main group due to the long-term use of the “premature fatigue” method. When performing exercises of a formative nature, the growth rate of strength capabilities was 30.9% (p <0.05), while when performing exercises of a basic nature, such an increase was three times less (by 10.5%, p <0.05)


Author(s):  
Mark B. A. De Ste Croix

Despite a relatively limited understanding of the factors associated with strength development, advances in equipment, and increased understanding of growth and maturation issues, have provided new insights into paediatric muscle strength development. Strength testing of children is performed routinely by researchers to monitor the determinants and development of strength throughout childhood, and also by physiotherapists to assess the degree of muscle disability and to diagnose the rate of recovery. It is important for strength test administrators to be equipped with knowledge of the normal age and sex-associated variations in strength and the factors attributable to that variation. Over time, the use of differing techniques to adjust for body size has changed our perspective of the historical concept of the age- and sex-associated differences in muscle strength. Likewise, the development of more sophisticated techniques to determine muscle size and body composition has allowed researchers to explore the factors associated with the development of strength during growth with a greater degree of validity.


Author(s):  
Nathalie J. Farpour-Lambert ◽  
Cameron J.R. Blimkie

This chapter focuses on laboratory-based strength assessment techniques and considerations for the paediatric population. The theoretical and practical considerations underlying strength assessment in adults and children and adolescents have been previously and thoroughly reviewed. This chapter will supplement, with emphasis on paediatric considerations, but not replicate, the material covered in these references. The topic of strength development and its correlates or determinants during childhood are beyond the scope of this chapter.


2020 ◽  
Vol 34 (S1) ◽  
pp. 1-1
Author(s):  
Manuel Alejandro Vargas Vargas ◽  
Mariana Alejandro Gómez Barroso ◽  
Donovan Alejandro Peña Montes ◽  
Christian Alejandro Cortés Rojo ◽  
Alfredo Alejandro Saavedra Molina ◽  
...  

2020 ◽  
Vol 62 (9) ◽  
pp. 1082-1088
Author(s):  
Isabelle Demers ◽  
Hélène Moffet ◽  
Luc Hébert ◽  
Désirée B Maltais

2017 ◽  
Vol 12 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Julien Robineau ◽  
Mathieu Lacome ◽  
Julien Piscione ◽  
Xavier Bigard ◽  
Nicolas Babault

Purpose:To assess the impact of 2 high-intensity interval-training (HIT) programs (short interval vs sprint interval training) on muscle strength and aerobic performances in a concurrent training program in amateur rugby sevens players.Methods:Thirty-six amateur rugby sevens players were randomly assigned to strength and short interval training (INT), strength and sprint interval training (SIT), or a strength-only training group (CON) during an 8-wk period. Maximal strength and power tests, aerobic measurements (peak oxygen uptake [VO2peak] and maximal aerobic velocity), and a specific repeated-sprint ability (RSA) test were conducted before and immediately after the overall training period.Results:From magnitude-based inference and effect size (ES ± 90% confidence limit) analyses, the current study revealed substantial gains in maximal strength and jump-height performance in all groups. The difference in change of slow concentric torque production was greater in CON than in SIT (0.65 ± 0.72, moderate). VO2peak and, consequently, mean performance in the RSA test were improved in the SIT group only (0.64 ± 0.29, moderate; –0.54 ± 0.35, moderate).Conclusions:The study did not emphasize interference on strength development after INT but showed a slight impairment of slow concentric torque production gains after SIT. Compared with INT, SIT would appear to be more effective to develop VO2peak and RSA but could induce lower muscle-strength gains, especially at low velocity.


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