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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Fluid Metabolism in Athletes Running Seven Marathons in Seven Consecutive Days
|
|---|---|
| Published in |
Frontiers in Physiology, February 2018
|
| DOI | 10.3389/fphys.2018.00091 |
| Pubmed ID | |
| Authors |
Daniela Chlíbková, Pantelis T. Nikolaidis, Thomas Rosemann, Beat Knechtle, Josef Bednář |
| Abstract |
Purpose: Hypohydration and hyperhydration are significant disorders of fluid metabolism in endurance performance; however, little relevant data exist regarding multi-stage endurance activities. The aim of the present study was to examine the effect of running seven marathons in 7 consecutive days on selected anthropometric, hematological and biochemical characteristics with an emphasis on hydration status.Methods:Participants included 6 women and 20 men (age 42.6 ± 6.2 years). Data was collected before day 1 (B1) and after day 1 (A1), 4 (A4), and 7 (A7).Results:The average marathon race time was 4:44 h:min (ranging from 3:09 - 6:19 h:min). Plasma sodium, plasma potassium and urine sodium were maintained during the race. Body mass (p< 0.001, η2= 0.501), body fat (p< 0.001, η2= 0.572) and hematocrit (p< 0.001, η2= 0.358) decreased. Plasma osmolality (Posm) (p< 0.001, η2= 0.416), urine osmolality (Uosm) (p< 0.001, η2= 0.465), urine potassium (p< 0.001, η2= 0.507), urine specific gravity (Usg) (p< 0.001, η2= 0.540), plasma urea (PUN) (p< 0.001, η2= 0.586), urine urea (UUN) (p< 0.001, η2= 0.532) and transtubular potassium gradient (p< 0.001, η2= 0.560) increased at A1, A4, and A7vs. B1. Posm correlated with PUN at A1(r= 0.59,p= 0.001) and A4(r= 0.58,p= 0.002). The reported post-race fluid intake was 0.5 ± 0.2 L/h and it correlated negatively with plasma [Na+] (r= -0.42,p= 0.007) at A4and (r= -0.50,p= 0.009) at A7. Uosm was associated with UUN at A1(r= 0.80,p< 0.001), at A4(r= 0.81,p< 0.001) and at A7(r= 0.86,p< 0.001) and with Usg (r= 0.71,p< 0.001) at A1, (r= 0.52,p= 0.006) at A4and (r= 0.46,p= 0.02) at A7.Conclusions:Despite the decrease in body mass, fluid and electrolyte balance was maintained with no decrease in plasma volume after running seven marathons in seven consecutive days. Current findings support the hypothesis that body mass changes do not reflect changes in the hydration status during prolonged exercise. |
X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Greece | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 50% |
| Science communicators (journalists, bloggers, editors) | 1 | 25% |
| Scientists | 1 | 25% |
Mendeley readers
The data shown below were compiled from readership statistics for 55 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 55 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 8 | 15% |
| Student > Master | 5 | 9% |
| Professor | 4 | 7% |
| Student > Doctoral Student | 3 | 5% |
| Researcher | 3 | 5% |
| Other | 9 | 16% |
| Unknown | 23 | 42% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 12 | 22% |
| Biochemistry, Genetics and Molecular Biology | 5 | 9% |
| Medicine and Dentistry | 5 | 9% |
| Agricultural and Biological Sciences | 3 | 5% |
| Nursing and Health Professions | 3 | 5% |
| Other | 2 | 4% |
| Unknown | 25 | 45% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 13 December 2019.
All research outputs
#13,343,408
of 23,018,998 outputs
Outputs from Frontiers in Physiology
#4,362
of 13,772 outputs
Outputs of similar age
#217,029
of 445,198 outputs
Outputs of similar age from Frontiers in Physiology
#115
of 334 outputs
Altmetric has tracked 23,018,998 research outputs across all sources so far. This one is in the 41st percentile – i.e., 41% of other outputs scored the same or lower than it.
So far Altmetric has tracked 13,772 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 7.6. This one has gotten more attention than average, scoring higher than 66% 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 445,198 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.
We're also able to compare this research output to 334 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 64% of its contemporaries.