Effect of 2-wk intensified training and inactivity on muscle Na+-K+ pump expression, phospholemman (FXYD1) phosphorylation, and performance in soccer players

2010 ◽  
Vol 108 (4) ◽  
pp. 898-905 ◽  
Author(s):  
Martin Thomassen ◽  
Peter M. Christensen ◽  
Thomas P. Gunnarsson ◽  
Lars Nybo ◽  
Jens Bangsbo
Keyword(s):  
Test Performance ◽  
Soccer Players ◽  
Intervention Period ◽  
Short Term ◽  
High Intensity Training ◽  
Muscle Adaptations ◽  
Isoform Expression ◽  
And Performance ◽  
Level 2 ◽  
Intensity Training

The present study examined muscle adaptations and alterations in performance of highly trained soccer players with intensified training or training cessation. Eighteen elite soccer players were, for a 2-wk period, assigned to either a group that performed high-intensity training with a reduction in the amount of training (HI, n = 7), or an inactivity group without training (IN, n = 11). HI improved ( P < 0.05) performance of the 4th, 6th, and 10th sprint in a repeated 20-m sprint test, and IN reduced ( P < 0.05) performance in the 5th to the 10th sprints after the 2-wk intervention period. In addition, the Yo-Yo intermittent recovery level 2 test performance of IN was lowered from 845 ± 48 to 654 ± 30 m. In HI, the protein expression of the Na+-K+ pump α2-isoform was 15% higher ( P < 0.05) after the intervention period, whereas no changes were observed in α1- and β1-isoform expression. In IN, Na+-K+ pump expression was not changed. In HI, the FXYD1ser68-to-FXYD1 ratio was 27% higher ( P < 0.01) after the intervention period, and, in IN, the AB_FXYD1ser68 signal was 18% lower ( P < 0.05) after inactivity. The change in FXYD1ser68-to-FXYD1 ratio was correlated ( r2 = 0.35; P < 0.05) with change in performance in repeated sprint test. The present data suggest that short-term intensified training, even for trained soccer players, can increase muscle Na+-K+ pump α2-isoform expression, and that cessation of training for 2 wk does not affect the expression of Na+-K+ pump isoforms. Resting phosphorylation status of the Na+-K+ pump is changed by training and inactivity and may play a role in performance during repeated, intense exercise.

scholarly journals Skeletal muscle and performance adaptations to high-intensity training in elite male soccer players: speed endurance runs versus small-sided game training

2017 ◽  
Vol 118 (1) ◽  
pp. 111-121 ◽  
Author(s):  
Dan Fransson ◽  
Tobias Schmidt Nielsen ◽  
Karl Olsson ◽  
Tobias Christensson ◽  
Paul S. Bradley ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
High Intensity ◽  
Soccer Players ◽  
High Intensity Training ◽  
And Performance ◽  
Intensity Training

A Carbohydrate Ingestion Intervention in an Elite Athlete Who Follows a Low-Carbohydrate High-Fat Diet

2018 ◽  
Vol 13 (7) ◽  
pp. 957-960 ◽  
Author(s):  
Christopher C. Webster ◽  
Jeroen Swart ◽  
Timothy D. Noakes ◽  
James A. Smith
Keyword(s):  
High Intensity ◽  
Time Trial ◽  
Endurance Performance ◽  
High Fat ◽  
Carbohydrate Ingestion ◽  
High Intensity Training ◽  
Low Carbohydrate ◽  
Elite Level ◽  
And Performance ◽  
Intensity Training

This case study documents the performance of an elite-level, exceptionally well-fat-adapted endurance athlete as he reintroduced carbohydrate (CHO) ingestion during high-intensity training. He had followed a strict low-CHO high-fat (LCHF) diet for 2 y, during which he ate approximately 80 g of CHO per day and trained and raced while ingesting only water. While following this diet, he earned numerous podium finishes in triathlons of various distances. However, he approached the authors to test whether CHO supplementation during exercise would further increase his high-intensity performance without affecting his fat adaptation. This 7-wk n = 1 investigation included a 4-wk habitual LCHF diet phase during which he drank only water during training and performance trials and a 3-wk habitual diet plus CHO ingestion phase (LCHF + CHO) during which he followed his usual LCHF diet but ingested 60 g/h CHO during 8 high-intensity training sessions and performance trials. After each phase, rates of fat oxidation and 30-s sprint, 4-min sprint, 20-km time trial (TT), and 100-km TT performances were measured. Compared with LCHF, 20-km TT time improved by 2.8% after LCHF + CHO, which would be a large difference in competition. There was no change in 30-s sprint power, a small improvement in 4-min sprint power (1.6%), and a small reduction in 100-km TT time (1.1%). The authors conclude that CHO ingestion during exercise was likely beneficial for this fat-adapted athlete during high-intensity endurance-type exercise (4–30 min) but likely did not benefit his short-sprint or prolonged endurance performance.

scholarly journals Improvements in fitness and vitality after a short high intensity training

2019 ◽  
pp. 44-49
Author(s):  
Olaf Timmermans ◽  
Mathilde Matthijsse
Keyword(s):  
Physical Activity ◽  
Quality Control ◽  
Training Program ◽  
Elderly People ◽  
High Intensity ◽  
Short Term ◽  
Control Scale ◽  
Intensive Training ◽  
High Intensity Training ◽  
Intensity Training

This study explored the effects of a short intensive training program to enhance the vitality of middle-aged and elderly people. 32 participants were questioned by a standardized questionnaire, at the start and end of a three-month period, during which they participated in a short intensive training program. This study presents the results of the quality control scale, a fysiofitscan, physical activity and the Vita 16. In general, the perceived fitness of the participants improved significantly. According to the results of the Vita 16 the participants had more energy after the short-term lifestyle intervention.

scholarly journals Utilizing Low-Intensity Blood Flow Restriction Training to Improve Aerobic Capacity in Physically Active and Injured Individuals: A Critically Appraised Topic

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Melissa Miller ◽  
Kacee Hill ◽  
Jaclyn Arduini ◽  
Aric Warren
Keyword(s):  
Blood Flow ◽  
Aerobic Capacity ◽  
Blood Flow Restriction ◽  
Inclusion Criteria ◽  
Physically Active ◽  
High Intensity Training ◽  
Flow Restriction ◽  
Low Intensity ◽  
Level 2 ◽  
Intensity Training

Purpose: To determine if, in physically active individuals, low-intensity Blood Flow Restriction (BFR) training is more effective than training without BFR at improving measures of aerobic capacity. Methods: A database search was conducted for articles that matched inclusion criteria (minimum level 2 evidence, physically active participants, comparison of low-intensity BFR to no BFR training, comparison of pre-post testing with aerobic fitness or performance, training protocols >2 weeks, studies published after 2010) by two authors and assessed by one using the PEDro scale (a minimum of 5/10 was required) to ensure level 2 quality studies that were then analyzed. Results: Four studies met all inclusion criteria. Three of the studies found significant improvements in aerobic capacity (VO2max) using BFR compared to no BFR. While the fourth study reported significant improvements in time to exertion (TTE) training with BFR, this same study did not find significant improvements in measures of aerobic capacity with BFR training. All compared BFR to non-BFR training. It was noted that high-intensity training without BFR was superior to both low-intensity training with and without BFR with respect to improvements in aerobic capacity. Conclusions: Moderate evidence exists to support the use of low-intensity BFR training to improve measures of aerobic capacity in physically active individuals over not using BRF. Clinicians seeking to maintain aerobic capacity in their patients who are unable, for various reasons, to perform high levels of aerobic activity may find low-intensity BFR training useful as a substitution while still receiving improvements in measures of aerobic capacity.

scholarly journals COVID-19-Related Restrictions and Quarantine COVID-19: Effects on Cardiovascular and Yo-Yo Test Performance in Professional Soccer Players

2020 ◽  
Vol 11 ◽  
Author(s):  
Lucas de Albuquerque Freire ◽  
Márcio Tannure ◽  
Márcio Sampaio ◽  
Maamer Slimani ◽  
Hela Znazen ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Test Performance ◽  
Random Order ◽  
Performance Outcomes ◽  
Soccer Players ◽  
Professional Soccer ◽  
Maximal Speed ◽  
And Performance ◽  
High Level ◽  
Viral Outbreak

The present study aimed to verify the quarantine’s effects during a serious viral outbreak on the cardiovascular and performance associated with the Yo-Yo test in a sample of professional soccer players. 20 high-level soccer players (n = 20; age: 26 ± 4 years-old; weight: 76.85 ± 6.7 kg; height: 179 ± 6 cm) participated in this study. The intermittent Yo-Yo test was performed pre- and post- COVID-19 quarantine in a random order. During each test, the soccer players’ running performance outcomes were monitored using a portable 5-Hz GPS with a 100 Hz accelerometer and a paired t-test was conducted at a p-value of ≤ 0.05. The main results demonstrated significant differences between pre- versus post-COVID-19 quarantine in the following variables: relative distance (161.7 ± 5.9 &gt; 141.1 ± 33.8 m/min), maximal speed (18.7 ± 0.9 &gt; 18.2 ± 0.6 km/h), acceleration (60 ± 20 frequency &gt; 52 ± 16 frequency), deceleration (34 ± 13 frequency &gt; 27 ± 6 frequency), sprints &gt; 19 km/h [0.8 (0.2;3)% &gt;0.5 (0;0.5)%], and in high intensity running distance [16.48 (2.68;41.64)m &gt; 0.827 (0.164;3.0)m]. We concluded that COVID-19-related restrictions and quarantine COVID-19 demonstrated adverse effects on professional soccer players’ Yo-Yo tests performance.

scholarly journals Effect of acupuncture on heart rate variability during prolonged high-intensity training in soccer players

2017 ◽  
Vol 37 (5) ◽  
pp. 636-642
Author(s):  
Lin Shihang ◽  
Wichai Eungpinithpong ◽  
Amonrat Jumnainsong ◽  
Somchai Rattanathongkom
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Intensity ◽  
Soccer Players ◽  
High Intensity Training ◽  
Intensity Training

Risks and Benefits of Youth Sport Specialization: Perspectives and Recommendations

2000 ◽  
Vol 12 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Lenny D. Wiersma
Keyword(s):  
Skill Acquisition ◽  
Youth Sport ◽  
Training And Development ◽  
Performance Potential ◽  
High Intensity Training ◽  
Motor Skill Acquisition ◽  
Potential Benefits ◽  
Potential Risks ◽  
And Performance ◽  
Intensity Training

Of growing concern to sport researchers is the practice of youth sport athletes specializing in sport at a young age. Sport specialization is characterized by year-round training in a single sport at the exclusion of other sport or nonsport activities. The purpose of this paper is to discuss the potential benefits of specialized sport at an early age in light of the potential risks associated with specialized participation. Three areas of consideration are discussed, including motor skill acquisition and performance, potential sociological consequences, and psychological concerns related to high-intensity training of young athletes. Finally, recommendations for further research and practical considerations are suggested for deciding the appropriateness of specialized sport in the training and development of youth sport athletes.

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