Diurnal Variation in Maximum Endurance and Maximum Strength Performance

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Raphael Knaier ◽  
Jingyi Qian ◽  
Ralf Roth ◽  
Denis Infanger ◽  
Timo Notter ◽  
...  
1993 ◽  
Vol 11 (2) ◽  
pp. 167-175 ◽  
Author(s):  
Christie M. Wells ◽  
David Collins ◽  
Bruce D. Hale

2012 ◽  
Vol 33 (12) ◽  
pp. 970-974 ◽  
Author(s):  
E. de Souza ◽  
V. Tricoli ◽  
A. Paulo ◽  
C. Silva-Batista ◽  
R. Cardoso ◽  
...  

2019 ◽  
Vol 14 (2s) ◽  
pp. 28
Author(s):  
Dahlia Al-Syurgawi ◽  
Mohamad Nizam Mohamed Shapie

<div><p>The aim of this study was to investigate the effect of 6-week plyometric training on muscular strength in young silat athletes. Thirty-four male silat exponents (<em>M</em><sub>age</sub> = 14 ± 3.22 years) were randomly assigned to a control or experimental group (<em>n</em> = 17 for each group). The experimental group participated in conventional silat workout routine three times a week for one-hour session plus plyometric training two times a week for one-hour session. The control group performed conventional silat workout routine three times per week for one to two-hours session. The one repetition maximum (1RM) squat test was used three times (pre-, mid- and post-test). Results revealed that muscular strength performance improved for the experimental group. This improvement was 9.16% between pre- and mid-test, 18.81% between mid- and post-test, and 29.7 % between pre- and post-test. Plyometric training was shown to be effective to improve maximum strength of young silat athletes.</p></div>


Author(s):  
Björn Kadlubowski ◽  
Michael Keiner ◽  
Tobias Stefer ◽  
Andreas Kapsecker ◽  
Hagen Hartmann ◽  
...  

AbstractChange of direction (COD) performance has an essential role in soccer. In the literature, there is a wide range of explained variance in correlation analyses between linear-sprint performance, concentric power and maximum strength and COD performance. Therefore this study has (1) analyzed the influence of linear-sprint performance, concentric power and maximum strength on COD performance in elite youth soccer players and (2) compared the calculated influence on the different COD tests. To answer the research questions, 67 elite youth soccer players were tested. The linear-sprint (10 m, [LS]) performance, concentric power (squat jump [SJ]) and maximum strength (1 repetition maximum [1 RM]) and COD (measured via the Illinois agility test [IAT], the 505 agility test [505], the agility test of the German Soccer Association [GewT], and the triangle test [TriT]) were assessed. The Pearson correlation analysis was used to assess the relationship. Benjamini and Hochberg’s method, which was used to control the study-wise false discovery rate, was 0.05. The LS performance had the greatest impact on COD performance with a wide range of explained variance between the different COD tests (r2 = 0.18 to 0.39). However, SJ compared to LS performance had lower influence, but also a wide range of explained variance (r2 = −0.02 to −0.29). Correlations for 1 RM and COD test were calculated with r2 = −0.01 to −0.09. Thus, (1) the greater the similarity between the performance tests (i.e., LS, SJ, 1 RM) and the COD tests, the higher the explained variance between the variables in question. Furthermore, (2) as the different COD tests are affected to different degrees by linear-sprint, concentric power and maximum strength performance, it might be concluded that the tests have a different physiological requirement profile. Therefore, coaches and sport scientists must review and select different tests with logical validity, based on the requirement profiles of soccer.


1964 ◽  
Vol 11 (01) ◽  
pp. 108-118 ◽  
Author(s):  
H Lackner ◽  
R Sougin-Mibashan

Summary and Conclusion1. Diurnal variation in fibrinolysis is marked in the Whites and almost absent in the Bantu. >2. The difference in fibrinolytic activity beween White and Bantu has been confirmed, but was found to decrease over the course of the morning due to diurnal variation in the White subjects.3. The ingestion of butter fat does not inhibit fibrinolysis to any appreciable extent in either White or Bantu.4. The accelerating effect of heparin on fibrinolysis was found to be present in lipaemic plasma, but appears to be distinct from the fat-clearing effect.


1962 ◽  
Vol 40 (3_Suppl) ◽  
pp. S149 ◽  
Author(s):  
A. Walser ◽  
H. Lüthy ◽  
H. R. Jenzer

2011 ◽  
Vol 10 (1) ◽  
pp. 99-105 ◽  
Author(s):  
Catalin Nisulescu ◽  
Delia Calinoiu ◽  
Adrian Timofte ◽  
Andreea Boscornea ◽  
Camelia Talianu

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