Speed-Related Abilities Are Similarly Improved After Sled Training Under Different Magnitudes of Velocity Loss in Highly Trained Soccer Players.
Int J Sports Physiol Perform
; 18(4): 420-427, 2023 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-36863354
ABSTRACT
PURPOSE:
We examined the effects of two 8-week resisted-sprint training programs under different magnitudes of velocity loss (VL) on the speed-related performance of highly trained soccer players.METHODS:
Twenty-one soccer players (age 25.9 [5.4] y) were randomly assigned to 1 of 2 groups (1) the "moderate-load group," players who trained with sled loads that induced 15%VL relative to unloaded sprint velocity (n = 11); and (2) the "heavy-load group," players who trained with sled loads that induced 40% VL relative to unloaded sprint velocity (n = 10). Linear sprint (10 m), curve sprint, change-of-direction speed, resisted-sprint performance at 15% VL and 40% VL, and vertical jumping ability were tested pretraining and posttraining. A 2-way repeated-measures analysis of variance was used to test for differences between groups. In addition, percentage changes were calculated for speed-related abilities and compared with their respective coefficients of variation to determine whether individual changes in performance were greater than the test variance (ie, "true change").RESULTS:
A main effect of time was detected for 10-m sprint, curve sprint, change-of-direction speed, and 15% VL and 40% VL resisted-sprint times, with significant decreases in sprint times (P = .003, P = .004, P = .05, P = .036, and P = .019, respectively). Jump variables did not change significantly over time. There were no group-by-time interactions for any tested variable (P > .05), but the "true change" analysis revealed meaningful individual changes in both groups.CONCLUSIONS:
Both moderate- and heavy-sled loading conditions may optimize the development of speed-related abilities in highly trained soccer players. Nevertheless, resisted-sprint training responses may differ meaningfully when assessed on an individual basis.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Corrida
/
Futebol
/
Desempenho Atlético
/
Treinamento Resistido
/
Exercício Pliométrico
Tipo de estudo:
Clinical_trials
Limite:
Adult
/
Humans
Idioma:
En
Revista:
Int J Sports Physiol Perform
Assunto da revista:
FISIOLOGIA
/
MEDICINA ESPORTIVA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Brasil