TY - JOUR
T1 - Effect of additional speed endurance training on performance and muscle adaptations
AU - Gunnarsson, Thomas
AU - Christensen, Peter Møller
AU - Holse, Kris
AU - Christiansen, Danny
AU - Bangsbo, Jens
N1 - CURIS 2012 5200 032
PY - 2012/10
Y1 - 2012/10
N2 - PURPOSE: The present study examined the effect of additional speed endurance training (SET) during the season on muscle adaptations and performance of trained soccer players. METHODS: Eighteen subelite soccer players performed one session with six to nine 30-s intervals at an intensity of 90%-95% of maximal intensity (SET) a week for 5 wk (SET intervention). Before and after the SET intervention, the players carried out the Yo-Yo intermittent recovery level 2 (Yo-Yo IR2) test, a sprint test (10 and 30 m), and an agility test. In addition, seven of the players had a resting muscle biopsy specimen taken and they carried out a running protocol on a motorized treadmill before and after the SET intervention. RESULTS: After the SET intervention, the Yo-Yo IR2 test (n = 13) performance was 11% better (P < 0.05), whereas sprint (n = 15) and agility (n = 13) performances were unchanged. The expression of the monocarboxylate transporter 1 (n = 6) was 9% higher (P < 0.05). and the expression of the Na/K pump subunit β1 (n = 6) was 13% lower (P < 0.05) after the SET intervention. The Na/K pump subunits α1, α2, as well as the monocarboxylate transporter 4 and the Na/H exchanger 1 (n = 6) were unchanged. After the SET intervention, the relative number of Type IIx fibers and oxygen consumption at 10 km•h were lower (P < 0.05), whereas V̇O2max was unchanged. CONCLUSIONS: In conclusion, adding ∼30 min of SET once a week during the season for trained soccer players did lead to an improved ability to perform repeated high-intensity exercise, with a concomitant increase in the expression of monocarboxylate transporter 1 and an improved running economy.
AB - PURPOSE: The present study examined the effect of additional speed endurance training (SET) during the season on muscle adaptations and performance of trained soccer players. METHODS: Eighteen subelite soccer players performed one session with six to nine 30-s intervals at an intensity of 90%-95% of maximal intensity (SET) a week for 5 wk (SET intervention). Before and after the SET intervention, the players carried out the Yo-Yo intermittent recovery level 2 (Yo-Yo IR2) test, a sprint test (10 and 30 m), and an agility test. In addition, seven of the players had a resting muscle biopsy specimen taken and they carried out a running protocol on a motorized treadmill before and after the SET intervention. RESULTS: After the SET intervention, the Yo-Yo IR2 test (n = 13) performance was 11% better (P < 0.05), whereas sprint (n = 15) and agility (n = 13) performances were unchanged. The expression of the monocarboxylate transporter 1 (n = 6) was 9% higher (P < 0.05). and the expression of the Na/K pump subunit β1 (n = 6) was 13% lower (P < 0.05) after the SET intervention. The Na/K pump subunits α1, α2, as well as the monocarboxylate transporter 4 and the Na/H exchanger 1 (n = 6) were unchanged. After the SET intervention, the relative number of Type IIx fibers and oxygen consumption at 10 km•h were lower (P < 0.05), whereas V̇O2max was unchanged. CONCLUSIONS: In conclusion, adding ∼30 min of SET once a week during the season for trained soccer players did lead to an improved ability to perform repeated high-intensity exercise, with a concomitant increase in the expression of monocarboxylate transporter 1 and an improved running economy.
U2 - 10.1249/mss.0b013e31825ca446
DO - 10.1249/mss.0b013e31825ca446
M3 - Journal article
C2 - 22617392
SN - 0195-9131
VL - 44
SP - 1942
EP - 1948
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
IS - 10
ER -