Bolt trener definitivt styrke. Rart han har hatt den fysiske utviklingen på lårmuskulaturen sin fra i fjor om han IKKE gjorde det..
Om vi ser på fysikken til Bolt sammenlignet med resten av feltet er man også nødt til å se på muskelmasse i forhold til kroppsstørrelse. En høyere sprinter vil selvsagt se mindre ut enn en kort kar. Bruk hue.
Kan selvsagt finne andre studier, men omtalte denne nylig her:
http://sandvikstraining.com/bli-sterk-hopp-og-bli-hurtigere-rett-og-slett-en-bedre-idretts/ Her så de på styrke og dens relevanse i forhold til fallhopp, som har en direkte korrelasjon med sprint (mange studier på dette - kan grave dem opp senere) og benyttes blant annet i statene i de fleste idretter som test for å anta hurtighet.
Relationship between countermovement jump performance and multijoint isometric and dynamic tests of strength.Nuzzo JL, McBride JM, Cormie P, McCaulley GO.
Neuromuscular Laboratory, Department of Health, Leisure, and Exercise Science, Appalachian State University, Boone, North Carolina, USA.
The purpose of this investigation was to determine the relationship between countermovement vertical jump (CMJ) performance and various methods used to assess isometric and dynamic multijoint strength.
Twelve NCAA Division I-AA male football and track and field athletes (age, 19.83 +/- 1.40 years; height, 179.10 +/- 4.56 cm; mass, 90.08 +/- 14.81 kg; percentage of body fat, 11.85 +/- 5.47%) participated in 2 testing sessions. The first session involved 1 repetition maximum (1RM) (kg) testing in the squat and power clean. During the second session, peak force (N), relative peak force (N x kg(-1)), peak power (W), relative peak power (W x kg(-1)), peak velocity (m x s(-1)), and jump height (meters) in a CMJ, and peak force and rate of force development (RFD) (N x s(-1)) in a maximal isometric squat (ISO squat) and maximal isometric mid-thigh pull (ISO mid-thigh) were assessed.
Significant correlations (P < or = 0.05) were found when comparing relative 1RMs (1RM/body mass), in both the squat and power clean, to relative CMJ peak power, CMJ peak velocity, and CMJ height. No significant correlations existed between the 4 measures of absolute strength, which did not account for body mass (squat 1RM, power clean 1RM, ISO squat peak force, and ISO mid-thigh peak force) when compared to CMJ peak velocity and CMJ height.
In conclusion, multijoint dynamic tests of strength (squat 1RM and power clean 1RM), expressed relative to body mass, are most closely correlated with CMJ performance. These results suggest that increasing maximal strength relative to body mass can improve performance in explosive lower body movements. The squat and power clean, used in a concurrent strength and power training program, are recommended for optimizing lower body power.