THE EFFECTS OF TEN WEEKS OF CORE TRAINNG ON CORE AND MAXIMAL STRENGTH IN MALE WE

2021 ◽  
Vol 6 (15) ◽  
pp. 2702-2715
Author(s):  
Brwa Abdalla ZURAR
Keyword(s):  
Maximal Strength

scholarly journals Changes in Maximal Strength and Home Run Performance in NCAA Division I Baseball Players Across 3 Competitive Seasons: A Descriptive Study

2021 ◽  
Vol 6 (1) ◽  
pp. 4
Author(s):  
W. Guy Hornsby ◽  
Abigail L. Tice ◽  
Jason D. Stone ◽  
Justin J. Merrigan ◽  
Joshua Hagen ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Repeated Measures ◽  
National Collegiate Athletic Association ◽  
Descriptive Study ◽  
Peak Force ◽  
Division I ◽  
Maximal Strength ◽  
Baseball Players ◽  
Repeated Measures Analysis ◽  
Division 1

The purpose of this longitudinal, descriptive study was to observe changes in maximal strength measured via isometric clean grip mid-thigh pull and home runs (total and home runs per game) across three years of training and three competitive seasons for four National Collegiate Athletic Association (NCAA) Division 1 baseball players. A one-way repeated measures analysis of variance (ANOVA) was performed, revealing significant univariate effects of time for peak force (PF) (p = 0.003) and peak force allometrically scaled (PFa) (p = 0.002). Increases in PF were noted from season 1 to season 2 (p = 0.031) and season 3 (p = 0.004), but season 2 was not significantly different than season 3 (p = 0.232). Additionally, increases in PFa were noted from season 1 to season 2 (p = 0.010) and season 3 (p < 0.001), but season 2 was not significantly different than season 3 (p = 0.052). Home runs per game rose from the 2009 (0.32) to 2010 season (1.35) and dropped during the 2011 season (1.07). A unique aspect of the study involves 2010 being the season in which ball-bat coefficient of restitution (BBCOR) bats were introduced to the NCAA competition.

scholarly journals Effects of Two Months of Very Low Carbohydrate Ketogenic Diet on Body Composition, Muscle Strength, Muscle Area, and Blood Parameters in Competitive Natural Body Builders

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 374
Author(s):  
Antonio Paoli ◽  
Lorenzo Cenci ◽  
PierLuigi Pompei ◽  
Nese Sahin ◽  
Antonino Bianco ◽  
...  
Keyword(s):  
Body Composition ◽  
Muscle Strength ◽  
Ketogenic Diet ◽  
Inflammatory Cytokines ◽  
Blood Parameters ◽  
Maximal Strength ◽  
Muscle Area ◽  
Low Carbohydrate ◽  
Before And After ◽  
Adequate Quantity

Background: Ketogenic diet (KD) is a nutritional approach that restricts daily carbohydrates, replacing most of the reduced energy with fat, while maintaining an adequate quantity of protein. Despite the widespread use of KD in weight loss in athletes, there are still many concerns about its use in sports requiring muscle mass accrual. Thus, the present study sought to investigate the influence of a KD in competitive natural body builders. Methods: Nineteen volunteers (27.4 ± 10.5 years) were randomly assigned to ketogenic diet (KD) or to a western diet (WD). Body composition, muscle strength and basal metabolic rate were measured before and after two months of intervention. Standard blood biochemistry, testosterone, IGF-1, brain-derived neurotrophic factor (BDNF) and inflammatory cytokines (IL6, IL1β, TNFα) were also measured. Results: Body fat significantly decreased in KD (p = 0.030); whilst lean mass increased significantly only in WD (p < 0.001). Maximal strength increased similarly in both groups. KD showed a significant decrease of blood triglycerides (p < 0.001), glucose (p = 0.001), insulin (p < 0.001) and inflammatory cytokines compared to WD whilst BDNF increased in both groups with significant greater changes in KD (p < 0.001). Conclusions: KD may be used during body building preparation for health and leaning purposes but with the caution that hypertrophic muscle response could be blunted.

scholarly journals Early Maximal Strength Training Improves Leg Strength and Postural Stability in Elderly Following Hip Fracture Surgery

2021 ◽  
Vol 12 ◽  
pp. 215145932110151
Author(s):  
Ole Kristian Berg ◽  
Jens-Meinhard Stutzer ◽  
Jan Hoff ◽  
Eivind Wang
Keyword(s):  
Hip Fracture ◽  
Muscle Strength ◽  
Strength Training ◽  
Postural Stability ◽  
Maximal Strength ◽  
Leg Press ◽  
Hip Fracture Surgery ◽  
Downward Spiral ◽  
Conventional Physiotherapy ◽  
Fracture Surgery

Introduction: Hip fractures predominantly occur in the geriatric population and results in increased physical inactivity and reduced independency, largely influenced by a downward spiral of ambulatory capacity, related to loss of skeletal muscle strength and postural stability. Thus, effective postoperative treatment, targeting improvements in muscle strength, is sought after. Materials & Methods: Twenty-one hip fracture patients (>65 yr) were randomized to 8 weeks of either conventional physiotherapy control group (CG), or leg press and hip abduction maximal strength training (MST) 3 times per week. MST was performed applying heavy loads (85-90% of 1 repetition maximum; 1RM) and 4-5 repetitions in 4 sets. Maximal strength (bi- and unilateral 1RM), postural stability (unipedal stance test; UPS), and DEXA-scan bone mineral content/ density (BMC/BMD) were measured before and after the 8-week rehabilitation. Results: Both MST and conventional physiotherapy improved bilateral leg press 1RM by 41 ± 27 kg and 29 ± 17 kg, respectively (both p < 0.01), while unilateral leg press 1RM only increased after MST (within group and between groups difference: both p < 0.05). MST also resulted in an increase in abduction 1RM in both the fractured (5 kg, 95%CI: 2-7; p < 0.01) and healthy limb (6 kg, 95%CI: 3-9; p < 0.01), while no such improvement was apparent in the CG (between groups difference: p < 0.01). Finally, MST improved UPS of the fractured limb (p < 0.05). No differences were observed in BMC or BMD following the 8 weeks. Discussion: Early postoperative MST improved lower extremities maximal muscle strength more than conventional physiotherapy and was accompanied by improvements in postural stability. Conclusion: Implementing MST in early rehabilitation after hip fracture surgery should be considered as a relevant treatment to curtail the downward spiral of reduced ambulatory capacity typical for this patient group, possibly reducing the risk of recuring falls and excess mortality. Trial Registration: https://clinicaltrials.gov/ct2/show/NCT03030092

Maximal Strength Training: The Effects on Intramuscular Economy and its Determinants

2010 ◽  
Vol 42 ◽  
pp. 241
Author(s):  
Zachary Barrett-O'Keefe ◽  
Jan Helgerud ◽  
Peter D. Wagner ◽  
Russell S. Richardson
Keyword(s):  
Strength Training ◽  
Maximal Strength

Acute Muscle Stretching Inhibits Maximal Strength Performance

1998 ◽  
Vol 69 (4) ◽  
pp. 411-415 ◽  
Author(s):  
Joke Kokkonen ◽  
Arnold G. Nelson ◽  
Andrew Cornwell
Keyword(s):  
Maximal Strength ◽  
Strength Performance ◽  
Muscle Stretching

Maximal Strength, Muscular Endurance and Inflammatory Biomarkers in Young Adult Men

2014 ◽  
Vol 35 (14) ◽  
pp. 1229-1234 ◽  
Author(s):  
J. Vaara ◽  
T. Vasankari ◽  
M. Fogelholm ◽  
K. Häkkinen ◽  
M. Santtila ◽  
...  
Keyword(s):  
Young Adult ◽  
Inflammatory Biomarkers ◽  
Muscular Endurance ◽  
Maximal Strength ◽  
Adult Men

Spatial-frequency and orientation tuning in psychophysical end-stopping

1998 ◽  
Vol 15 (4) ◽  
pp. 585-595 ◽  
Author(s):  
CONG YU ◽  
DENNIS M. LEVI
Keyword(s):  
Spatial Frequency ◽  
Frequency Tuning ◽  
Spatial Filter ◽  
Orientation Tuning ◽  
Maximal Strength ◽  
Facilitation Effect ◽  
Spatial Filters ◽  
Spatial Frequency Tuning ◽  
Spatial Frequencies ◽  
Wide Range

A psychophysical analog to cortical receptive-field end-stopping has been demonstrated previously in spatial filters tuned to a wide range of spatial frequencies (Yu & Levi, 1997a). The current study investigated tuning characteristics in psychophysical spatial filter end-stopping. When a D6 (the sixth derivative of a Gaussian) target is masked by a center mask (placed in the putative spatial filter center), two end-zone masks (placed in the filter end-zones) reduce thresholds. This “end-stopping” effect (the reduction of masking induced by end-zone masks) was measured at various spatial frequencies and orientations of end-zone masks. End-stopping reached its maximal strength when the spatial frequency and/or orientation of the end-zone masks matched the spatial frequency and/or orientation of the target and center mask, showing spatial-frequency tuning and orientation tuning. The bandwidths of spatial-frequency and orientation tuning functions decreased with increasing target spatial frequency. At larger orientation differences, however, end-zone masks induced a secondary facilitation effect, which was maximal when the spatial frequency of end-zone masks equated the target spatial frequency. This facilitation effect might be related to certain types of contour and texture perception, such as perceptual pop-out.

W' reconstitution rate at different intensities above critical torque: The role of muscle size and maximal strength

2021 ◽  
Author(s):  
Leonardo Henrique Perinotto Abdalla ◽  
Ryan Michael Broxterman ◽  
Thomas Jackson Barstow ◽  
Camila Coelho Greco ◽  
Benedito Sérgio Denadai
Keyword(s):  
Muscle Size ◽  
Maximal Strength

“You’re absolutely right!!”

2010 ◽  
Vol 10 (2) ◽  
pp. 194-222 ◽  
Author(s):  
Marta Carretero
Keyword(s):  
Quantitative Analysis ◽  
Written Language ◽  
Propositional Content ◽  
Main Function ◽  
Maximal Strength ◽  
Linguistic Data ◽  
Naturally Occurring ◽  
Semantic Difference ◽  
Verbal Group ◽  
Discourse Functions

The English degree adverb absolutely and its Spanish equivalent absolutamente may function as modifiers of words of different kinds, as Adjuncts and as (parts of) minor clauses. This article sets forth a quantitative analysis, based on naturally-occurring linguistic data, of the distribution of these functions for both adverbs. Apart from distributional differences between the two adverbs and between their occurrences in spoken and written language, the results show that when they are modifiers of words or Verbal Group-oriented Adjuncts, their main function is to qualify (part of) the propositional content of the utterance; however, when they are clausal Adjuncts or (parts of) minor clauses, they are often geared to the performance of discourse functions such as contrast, concession or agreement. These functions are shared with some adverbs of certainty such as ‘certainly’ or ‘definitely’, which suggests that the semantic difference between degree and certainty tends to be blurred when adverbs of maximal strength of both types are used for performing discourse functions that enhance assertiveness.

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