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Ultrasonic assessment of exercise-induced change in skeletal muscle glycogen content

Overview of attention for article published in BMC Sports Science, Medicine and Rehabilitation, April 2015
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#40 of 337)
  • High Attention Score compared to outputs of the same age (92nd percentile)

Mentioned by

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41 tweeters
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1 Facebook page

Citations

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35 Dimensions

Readers on

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121 Mendeley
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Title
Ultrasonic assessment of exercise-induced change in skeletal muscle glycogen content
Published in
BMC Sports Science, Medicine and Rehabilitation, April 2015
DOI 10.1186/s13102-015-0003-z
Pubmed ID
Authors

David C Nieman, R Andrew Shanely, Kevin A Zwetsloot, Mary Pat Meaney, Gerald E Farris

Abstract

Ultrasound imaging is a valuable tool in exercise and sport science research, and has been used to visualize and track real-time movement of muscles and tendons, estimate hydration status in body tissues, and most recently, quantify skeletal muscle glycogen content. In this validation study, direct glycogen quantification from pre-and post-exercise muscle biopsy samples was compared with glycogen content estimates made through a portable, diagnostic high-frequency ultrasound and cloud-based software system (MuscleSound®, Denver, CO). Well-trained cyclists (N = 20, age 38.4 ± 6.0 y, 351 ± 57.6 wattsmax) participated in a 75-km cycling time trial on their own bicycles using CompuTrainer Pro Model 8001 trainers (RacerMate, Seattle, WA). Muscle biopsy samples and ultrasound measurements were acquired pre- and post-exercise. Specific locations on the vastus lateralis were marked, and a trained technician used a 12 MHz linear transducer and a standard diagnostic high resolution GE LOGIQ-e ultrasound machine (GE Healthcare, Milwaukee, WI) to make three ultrasound measurements. Ultrasound images were pre-processed to isolate the muscle area under analysis, with the mean pixel intensity averaged from the three scans and scaled (0 to 100 scale) to create the glycogen score. Pre- and post-exercise muscle biopsy samples were acquired at the vastus lateralis location (2 cm apart) using the suction-modified percutaneous needle biopsy procedure, and analyzed for glycogen content. The 20 cyclists completed the 75-km cycling time trial in 168 ± 26.0 minutes at a power output of 193 ± 57.8 watts (54.2 ± 9.6% wattsmax). Muscle glycogen decreased 77.2 ± 17.4%, with an absolute change of 71.4 ± 23.1 mmol glycogen per kilogram of muscle. The MuscleSound® change score at the vastus lateralis site correlated highly with change in measured muscle glycogen content (R = 0.92, P < 0.001). MuscleSound® change scores acquired from an average of three ultrasound scans at the vastus lateralis site correlated significantly with change in vastus lateralis muscle glycogen content. These data support the use of the MuscleSound® system for accurately and non-invasively estimating exercise-induced decreases in vastus lateralis skeletal muscle glycogen content.

Twitter Demographics

The data shown below were collected from the profiles of 41 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 121 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 2 2%
United Kingdom 2 2%
Brazil 1 <1%
Netherlands 1 <1%
Germany 1 <1%
Portugal 1 <1%
Japan 1 <1%
Unknown 112 93%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 24 20%
Student > Master 20 17%
Student > Bachelor 15 12%
Researcher 14 12%
Student > Doctoral Student 11 9%
Other 21 17%
Unknown 16 13%
Readers by discipline Count As %
Sports and Recreations 28 23%
Medicine and Dentistry 26 21%
Nursing and Health Professions 11 9%
Engineering 10 8%
Agricultural and Biological Sciences 10 8%
Other 17 14%
Unknown 19 16%

Attention Score in Context

This research output has an Altmetric Attention Score of 24. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 June 2019.
All research outputs
#1,099,207
of 19,214,062 outputs
Outputs from BMC Sports Science, Medicine and Rehabilitation
#40
of 337 outputs
Outputs of similar age
#16,974
of 239,476 outputs
Outputs of similar age from BMC Sports Science, Medicine and Rehabilitation
#1
of 1 outputs
Altmetric has tracked 19,214,062 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 94th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 337 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 11.1. This one has done well, scoring higher than 88% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 239,476 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 92% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them