Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Light Exposure in the Evening Improves Performance in the Final Spurt

19.05.2017

Athletes often have to compete late in the evening, when they are no longer able to perform at their best. As reported in the journal Frontiers in Physiology, however, researchers from the University of Basel have shown that athletes who are exposed to blue light before competing can significantly increase their performance in the final spurt. The blue light had no impact on the athletes’ maximum performance.

Many sports events take place late in the evening, during television prime time. At this time of day, however, many athletes often fail to perform at their best due to their sleep-wake cycle.


Athletes in blue light: performance during the final spurt is clearly increased by light exposure.

University of Basel, Department of Sport, Exercise and Health

In a study headed by Professor Arno Schmidt-Trucksäss, Raphael Knaier and colleagues at the University of Basel investigated whether light exposure before a cycling time trial can compensate for this disadvantage.

The Sports and Exercise Medicine division, as well as Professor Christian Cajochen at the Centre for Chronobiology, took part in this extensive investigation involving 74 young male athletes.

It is well known that blue light reduces the production of the sleep hormone melatonin. The researchers tested the hypothesis that this suppression of melatonin could improve an athlete’s endurance during a 12-minute cycling time trial.

They randomly divided the participants into three groups and exposed them to either bright light, blue monochromatic light or control light for an hour. This light exposure was immediately followed by the performance test on the bicycle ergometer.

Bright light is less effective

Exposure to blue light significantly improved the athletes’ ability to increase their performance during the final spurt of the time trial. This increase was defined as the ratio of the performance measured in the first minute to that of the last minute of the test. The subjects’ improved performance in the final spurt also correlated with the amount of blue light. This light was able to effectively suppress the melatonin and thus influence the athletes’ sleep-wake cycle.

Compared to the control light, bright light led to a small increase in overall performance, but the difference was not significant. “Since even minor differences are relevant in top-level sport, however, this should be investigated more closely in further studies,” commented Professor Schmidt-Trucksäss.

Original source

Raphael Knaier, Juliane Schäfer, Anja Rossmeissl, Christopher Klenk, Henner Hanssen, Christoph Höchsmann, Christian Cajochen, and Arno Schmidt-Trucksäss
Prime Time Light Exposures Do Not Seem to Improve Maximal Physical Performance in Male Elite Athletes, but Enhance End-Spurt Performance
Frontiers in Physiology (2017), doi: 10.3389/fphys.2017.00264

Further information

Professor Arno Schmidt-Trucksäss, University of Basel, Department of Sport, Exercise and Health, Tel. +41 61 207 47 41, email: arno.schmidt-trucksaess@unibas.ch

Weitere Informationen:

http://journal.frontiersin.org/article/10.3389/fphys.2017.00264/full Original source

Video: https://www.youtube.com/watch?time_continue=6&v=eWCwF0oiBUo

lic. phil. Christoph Dieffenbacher | Universität Basel

Further reports about: athletes blue light bright light sleep-wake cycle

More articles from Life Sciences:

nachricht Cells communicate in a dynamic code
19.02.2018 | California Institute of Technology

nachricht Studying mitosis' structure to understand the inside of cancer cells
19.02.2018 | Biophysical Society

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Contacting the molecular world through graphene nanoribbons

19.02.2018 | Materials Sciences

When Proteins Shake Hands

19.02.2018 | Materials Sciences

Cells communicate in a dynamic code

19.02.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>