| Title |
Exercise-induced changes in triceps surae tendon stiffness and muscle strength affect running economy in humans
|
|---|---|
| Published in |
European Journal of Applied Physiology, January 2013
|
| DOI | 10.1007/s00421-012-2585-4 |
| Pubmed ID | |
| Authors |
Kirsten Albracht, Adamantios Arampatzis |
| Abstract |
The purpose of the present study was to investigate whether increased tendon-aponeurosis stiffness and contractile strength of the triceps surae (TS) muscle-tendon units induced by resistance training would affect running economy. Therefore, an exercise group (EG, n = 13) performed a 14-week exercise program, while the control group (CG, n = 13) did not change their training. Maximum isometric voluntary contractile strength and TS tendon-aponeurosis stiffness, running kinematics and fascicle length of the gastrocnemius medialis (GM) muscle during running were analyzed. Furthermore, running economy was determined by measuring the rate of oxygen consumption at two running velocities (3.0, 3.5 ms(-1)). The intervention resulted in a ∼7 % increase in maximum plantarflexion muscle strength and a ∼16 % increase in TS tendon-aponeurosis stiffness. The EG showed a significant ∼4 % reduction in the rate of oxygen consumption and energy cost, indicating a significant increase in running economy, while the CG showed no changes. Neither kinematics nor fascicle length and elongation of the series-elastic element (SEE) during running were affected by the intervention. The unaffected SEE elongation of the GM during the stance phase of running, in spite of a higher tendon-aponeurosis stiffness, is indicative of greater energy storage and return and a redistribution of muscular output within the lower extremities while running after the intervention, which might explain the improved running economy. |
X Demographics
The data shown below were collected from the profiles of 91 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 | 22 | 24% |
| United States | 17 | 19% |
| Australia | 8 | 9% |
| Canada | 5 | 5% |
| Ireland | 4 | 4% |
| Spain | 3 | 3% |
| Brazil | 2 | 2% |
| Netherlands | 2 | 2% |
| Sweden | 1 | 1% |
| Other | 9 | 10% |
| Unknown | 18 | 20% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 65 | 71% |
| Scientists | 19 | 21% |
| Practitioners (doctors, other healthcare professionals) | 5 | 5% |
| Science communicators (journalists, bloggers, editors) | 2 | 2% |
Mendeley readers
The data shown below were compiled from readership statistics for 370 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 1 | <1% |
| Netherlands | 1 | <1% |
| France | 1 | <1% |
| Norway | 1 | <1% |
| Finland | 1 | <1% |
| Belgium | 1 | <1% |
| Spain | 1 | <1% |
| Unknown | 363 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 79 | 21% |
| Student > Ph. D. Student | 62 | 17% |
| Student > Bachelor | 43 | 12% |
| Researcher | 29 | 8% |
| Student > Doctoral Student | 22 | 6% |
| Other | 69 | 19% |
| Unknown | 66 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 161 | 44% |
| Medicine and Dentistry | 34 | 9% |
| Nursing and Health Professions | 33 | 9% |
| Engineering | 11 | 3% |
| Agricultural and Biological Sciences | 10 | 3% |
| Other | 35 | 9% |
| Unknown | 86 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 60. 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 27 March 2023.
All research outputs
#718,187
of 25,576,801 outputs
Outputs from European Journal of Applied Physiology
#202
of 4,372 outputs
Outputs of similar age
#5,486
of 293,770 outputs
Outputs of similar age from European Journal of Applied Physiology
#6
of 30 outputs
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So far Altmetric has tracked 4,372 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.
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