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Severe reduction of energy availability in controlled conditions causes poor endurance performance, impairs explosive power and affects hormonal status in trained male endurance athletes
ID
Jurov, Iva
(
Avtor
),
ID
Keay, Nicola
(
Avtor
),
ID
Rauter, Samo
(
Avtor
)
PDF - Predstavitvena datoteka,
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MD5: E01CE69FEBCD455EB6083619FCF0A83B
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2076-3417/11/18/8618
Galerija slik
Izvleček
The aim of this study was to severely reduce energy availability (EA) in controlled conditions in trained male endurance athletes to observe any effects on health, performance, and psychological and energy markers. EA was reduced by 50% over 14 days in athletes by maintaining identical energy intake and increasing exercise energy expenditure. Blood was drawn, performance was measured by three specific tests (endurance, explosive power and agility) and two psychological questionnaires were used. Reduced EA (17.3 ± 5.0 kcal/kg FFM/day) resulted in lower body fat% (t(12) = 3.36, p = 0.006), lower power output and relative power output (t(12) = 2.69, p = 0.021 t(12) = 2.34, p = 0.036), explosive power was reduced (t(12) = 6.41, p = 0.000), lactate metabolism was altered (p = 0.001). EA was negatively correlated with haemoglobin and testosterone (r = −0.557, p = 0.30 and r = −0.532, p = 0.037), anaerobic threshold (r = −0.597, p = 0.02) and respiratory compensation point (r = −0.575, p = 0.025). There were significant differences in Well-being (t(12) = 4.11, p = 0.002) and the Three Factor Eating Questionnaire (t(12) = −2.71, p = 0.020). This is the first study to demonstrate that endurance performance and explosive power can be affected before detrimental health effects occur in male athletes. Drastic reductions of EA could lead to poor eating behaviours. The two psychological questionnaires seem to be more sensitive to EA changes than blood markers.
Jezik:
Angleški jezik
Ključne besede:
energy availability
,
performance
,
endurance athletes
,
explosive power
,
lactate metabolism
,
relative energy deficiency in sport
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FŠ - Fakulteta za šport
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
9 str.
Številčenje:
Vol. 11, iss. 18, art. 8618
PID:
20.500.12556/RUL-136347
UDK:
616
ISSN pri članku:
2076-3417
DOI:
10.3390/app11188618
COBISS.SI-ID:
80960515
Datum objave v RUL:
25.04.2022
Število ogledov:
732
Število prenosov:
114
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Objavi na:
Gradivo je del revije
Naslov:
Applied sciences
Skrajšan naslov:
Appl. sci.
Založnik:
MDPI
ISSN:
2076-3417
COBISS.SI-ID:
522979353
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
16.09.2021
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
energija
,
vzdržljivost
,
eksplozivna moč
,
metabolizem
,
laktati
,
relativno energijsko pomanjkanje v športu
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P5-0147
Naslov:
Kineziologija monostrukturnih, polistrukturnih in konvencionalnih športov
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