| Title |
Hemodynamic and hormonal responses to a short-term low-intensity resistance exercise with the reduction of muscle blood flow
|
|---|---|
| Published in |
European Journal of Applied Physiology, June 2005
|
| DOI | 10.1007/s00421-005-1389-1 |
| Pubmed ID | |
| Authors |
Haruhito Takano, Toshihiro Morita, Haruko Iida, Ken-ichi Asada, Masayoshi Kato, Kansei Uno, Ken Hirose, Akihiro Matsumoto, Katsu Takenaka, Yasunobu Hirata, Fumio Eto, Ryozo Nagai, Yoshiaki Sato, Toshiaki Nakajima |
| Abstract |
We investigated the hemodynamic and hormonal responses to a short-term low-intensity resistance exercise (STLIRE) with the reduction of muscle blood flow. Eleven untrained men performed bilateral leg extension exercise under the reduction of muscle blood flow of the proximal end of both legs pressure-applied by a specially designed belt (a banding pressure of 1.3 times higher than resting systolic blood pressure, 160-180 mmHg), named as Kaatsu. The intensity of STLIRE was 20% of one repetition maximum. The subjects performed 30 repetitions, and after a 20-seconds rest, they performed three sets again until exhaustion. The superficial femoral arterial blood flow and hemodynamic parameters were measured by using the ultrasound and impedance cardiography. Serum concentrations of growth hormone (GH), vascular endothelial growth factor (VEGF), noradrenaline (NE), insulin-like growth factor (IGF)-1, ghrelin, and lactate were also measured. Under the conditions with Kaatsu, the arterial flow was reduced to about 30% of the control. STLIRE with Kaatsu significantly increased GH (0.11+/-0.03 to 8.6+/-1.1 ng/ml, P < 0.01), IGF-1 (210+/-40 to 236+/-56 ng/ml, P < 0.01), and VEGF (41+/-13 to 103+/-38 pg/ml, P < 0.05). The increase in GH was related to neither NE nor lactate, but the increase in VEGF was related to that in lactate (r = 0.57, P < 0.05). Ghrelin did not change during the exercise. The maximal heart rate (HR) and blood pressure (BP) in STLIRE with Kaatsu were higher than that without Kaatsu. Stroke volume (SV) was lower due to the decrease of the venous return by Kaatsu, but, total peripheral resistance (TPR) did not change significantly. These results suggest that STLIRE with Kaatsu significantly stimulates the exercise-induced GH, IGF, and VEGF responses with the reduction of cardiac preload during exercise, which may become a unique method for rehabilitation in patients with cardiovascular diseases. |
Mendeley readers
The data shown below were compiled from readership statistics for 460 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 7 | 2% |
| Norway | 2 | <1% |
| United Kingdom | 2 | <1% |
| Austria | 1 | <1% |
| Australia | 1 | <1% |
| Colombia | 1 | <1% |
| Denmark | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 444 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 89 | 19% |
| Student > Bachelor | 72 | 16% |
| Student > Ph. D. Student | 55 | 12% |
| Student > Doctoral Student | 31 | 7% |
| Researcher | 30 | 7% |
| Other | 82 | 18% |
| Unknown | 101 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 149 | 32% |
| Medicine and Dentistry | 80 | 17% |
| Nursing and Health Professions | 56 | 12% |
| Agricultural and Biological Sciences | 19 | 4% |
| Biochemistry, Genetics and Molecular Biology | 11 | 2% |
| Other | 31 | 7% |
| Unknown | 114 | 25% |
Attention Score in Context
This research output has an Altmetric Attention Score of 10. 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 2014.
All research outputs
#3,415,510
of 25,374,917 outputs
Outputs from European Journal of Applied Physiology
#1,027
of 4,345 outputs
Outputs of similar age
#6,580
of 67,432 outputs
Outputs of similar age from European Journal of Applied Physiology
#4
of 20 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. Compared to these this one has done well and is in the 86th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,345 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.6. This one has done well, scoring higher than 75% 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 67,432 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 89% of its contemporaries.
We're also able to compare this research output to 20 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 80% of its contemporaries.