| Title |
Muscle–tendon interaction and EMG profiles of world class endurance runners during hopping
|
|---|---|
| Published in |
European Journal of Applied Physiology, December 2012
|
| DOI | 10.1007/s00421-012-2559-6 |
| Pubmed ID | |
| Authors |
K. Sano, M. Ishikawa, A. Nobue, Y. Danno, M. Akiyama, T. Oda, A. Ito, M. Hoffrén, C. Nicol, E. Locatelli, P. V. Komi |
| Abstract |
The present study examined the muscle-tendon interaction of ten international level Kenyan runners. Ultrasonography and kinematics were applied together with EMG recordings of lower limb muscles during repetitive hopping performed at maximal level. The ten Kenyans had longer gastro Achilles tendon at rest (p < 0.01) as compared with ten control subjects matched in height. Conversely, the stretching and shortening amplitudes of the tendinous tissues of the medial gastrocnemius (MG) muscle were significantly smaller in the Kenyans than in controls during the contact phase of hopping. This applied also to the fascicle length changes, which were smaller and more homogeneous among Kenyans. These limited musculo-tendinous changes resulted in higher maximal hopping height and in larger power despite their reduced body weight. The associated finding of a greater shortening to stretching ratio of the MG tendinous tissues during contact could imply that the Kenyan MG muscle-tendon unit is optimized to favor efficient storage and recoil of elastic energy, while operating at optimal muscle fascicle working range (plateau region). |
X Demographics
The data shown below were collected from the profiles of 60 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 14 | 23% |
| United States | 10 | 17% |
| Australia | 4 | 7% |
| Spain | 2 | 3% |
| Canada | 2 | 3% |
| Switzerland | 2 | 3% |
| South Africa | 1 | 2% |
| Guatemala | 1 | 2% |
| Norway | 1 | 2% |
| Other | 6 | 10% |
| Unknown | 17 | 28% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 36 | 60% |
| Scientists | 17 | 28% |
| Practitioners (doctors, other healthcare professionals) | 5 | 8% |
| Science communicators (journalists, bloggers, editors) | 2 | 3% |
Mendeley readers
The data shown below were compiled from readership statistics for 193 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| France | 1 | <1% |
| Austria | 1 | <1% |
| South Africa | 1 | <1% |
| Finland | 1 | <1% |
| Belgium | 1 | <1% |
| Spain | 1 | <1% |
| Unknown | 187 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 44 | 23% |
| Student > Master | 41 | 21% |
| Student > Ph. D. Student | 27 | 14% |
| Researcher | 16 | 8% |
| Professor > Associate Professor | 11 | 6% |
| Other | 29 | 15% |
| Unknown | 25 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 97 | 50% |
| Medicine and Dentistry | 15 | 8% |
| Agricultural and Biological Sciences | 13 | 7% |
| Engineering | 11 | 6% |
| Nursing and Health Professions | 9 | 5% |
| Other | 14 | 7% |
| Unknown | 34 | 18% |
Attention Score in Context
This research output has an Altmetric Attention Score of 64. 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 01 August 2022.
All research outputs
#680,585
of 25,663,438 outputs
Outputs from European Journal of Applied Physiology
#192
of 4,383 outputs
Outputs of similar age
#4,772
of 287,603 outputs
Outputs of similar age from European Journal of Applied Physiology
#3
of 36 outputs
Altmetric has tracked 25,663,438 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,383 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.7. This one has done particularly well, scoring higher than 95% 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 287,603 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 98% of its contemporaries.
We're also able to compare this research output to 36 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 91% of its contemporaries.