European Master Games, Conference on Power and Sprint performance in Masters athletes

1. MUSCULAR
POWER
AND
PERFORMANCE
IN
MASTERS
ATHLETES
APPLICATION
TO
SPRINT
RUNNING
@jb_morin
Pr. J-B Morin Université de Nice Sophia Antipolis
Laboratoire Motricité Humaine, Education, Sport, Santé
jean-benoit.morin@unice.fr
Membre de
unice.frstaps.

2. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
MUSCULAR
POWER,
EXPLOSIVENESS
AND
SPRINT

3. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
MUSCULAR
POWER,
EXPLOSIVE
STRENGTH
AND
SPRINT
Power
=
Force
x
elocity
=
Work
/
Time
Pmax
after
≈2s
15
to
30
W/kg
Explosiveness
=
Rate
of
force
production
Start….
Each
step…

4. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
SPRINT
PERFORMANCE
AND
AGING

5. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
SPRINT
PERFORMANCE
AND
AGING
-­‐0.73%
/yr
-­‐0.89%
/yr
-­‐1.02%
/yr
-­‐0.82%
/yr
Rittweger,
Proc
Roy
Soc
B,
2009

6. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
SPRINT
PERFORMANCE
AND
AGING
Gatlin
(USA)
22yrs:
9.85
s
33yrs:
9.74
s
Powell
(USA)
22yrs:
9.87
s
33yrs:
9.81
s
Collins
(St-­‐K-­‐N)
PB
at
38yrs:
9.96
s
2003
(27yrs:
9.99
s)
2015
(39yrs:
9.98
s)

7. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
KNOWLEDGE…
TRAINING
/
PERFORMANCE
HEALTH
/
WELL-­‐BEING
Hidekichi Miyazaki
WR 105yrs: 42.22 s

8. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FORCE
–
VELOCITY
–
EXPLOSIVENESS….
Lindle,
J
Appl
Physiol,
1997
Vanderwoort,
Muscle
Nerve,
2002

9. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FORCE
–
VELOCITY
–
EXPLOSIVENESS….
Doherty,
J
Appl
Physiol,
2003
Porter,
Scand
J
Med
Sci
Sport,
1995

10. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FORCE
–
VELOCITY
–
EXPLOSIVENESS….
Sipila,
Eur
J
Appl
Physiol,
1991

11. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FORCE
–
VELOCITY
–
EXPLOSIVENESS….
Korhonen,
J
Appl
Physiol,
2006

12. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FORCE
–
VELOCITY
–
EXPLOSIVENESS….
More « specific » tests?
Edwen,
Scand
J
Med
Sci
Sport,
2014

13. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
OK
WHAT
ABOUT
SPRINT
MECHANICS?

14. Membre de
SPRINT
MECHANICS
IN
MASTER
ATHLETES….
Korhonen,
Med
Sci
Sport
Exerc,
2003 200
Hz
FREQUENCY
=
1/(CONTACT
TIME
+
FLIGHT
TIME)
≈4
HZ

15. Membre de
SPRINT
MECHANICS
IN
MASTER
ATHLETES….
Korhonen,
Med
Sci
Sport
Exerc,
2003
RUNNING
SPEED
=
STEP
LENGTH
X
STEP
FREQUENCY
200
Hz
FREQUENCY
=
1/(CONTACT
TIME
+
FLIGHT
TIME)
≈4
HZ

16. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
PROBLEM….
Leg extension, jumps or temporal variables, no SPRINTING Force and Power outputs

17. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
1
STUDY….
Korhonen,
Med
Sci
Sport
Exerc,
2006

18. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
HOW?

19. Only
2
(im)possibilities
L
SPRINT INSTRUMENTED TREADMILL
St-Etienne, France
Doha, Qatar
Houston, TX
FORCE PLATES
INSEP, Paris, France
POWER,
FORCE,
VELOCITY
MEASUREMENTS
DURING
SPRINTING
PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
Rabita,
Scand
J
Med
Sci
Sport
2015

20. 2011
–
2015
Sprint
Instrumented
treadmill
Track-­‐Embedded
Force
Plates
Elite
Athletes
Horizontal
GRF
is
paramount
for
acceleration
Vertical
GRF
is
paramount
for
top
speed
HZT
Force
at
high
speed
higher
in
top
athletes
Hip
extensors
play
a
key
role
Med
Sci
Sport
Exerc
2011
Eur
J
Appl
Physiol
2012
Scand
J
Med
Sci
Sport
2015
J
Biomech
2015
Frontiers
Physiol
2015
DETERMINANTS
OF
SPRINT
RUNNING
PERFORMANCE
Membre de

21. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
FIELD
MEASUREMENTS?

22. Only
2
(im)possibilities
L
SPRINT INSTRUMENTED TREADMILL
St-Etienne, France
Doha, Qatar
FORCE PLATES
INSEP, Paris, France
2015
Membre de
PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN

23.
1927
Archibald
V. HILL
1950’s
Franklin Henry
Modern Devices
v(t) = vmax.(1-e(-t/τ))
vmax
di Prampero et al.,
J Exp biol, 2005 Furusawa et al., 1927
Henry, 1954
Volkov & Lapin, 1979
Membre de

24. a(t) = (vmax/τ).e(-t/τ))
Fh(t) = m.a(t) + Fair
Estimated from speed, mass
and height
Ph(t) = Fh (t) . v(t)
v(t)
Ph(t)
Fh(t)
Linear F-V relationship
Polynomial 2 P-V relationship
Validity ??
F0
V0
Pmax
PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
A
simple
Xield
method
Membre de
v(t) = vmax.(1-e(-t/τ))

25. Comparison with force plates
Validity, Reproductibility J
A
simple
Xield
method
Membre de
PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN

26. Coming
soon:
simpler
devices
!
Membre de
P. Jimenez-Reyes, UCAM, Spain
iPhone6 app “MySprint”, 240 fps
E-J Marey, 1882
Fusil Chronophotographique, 24 fps

27. Pierre
Samozino,
PhD
University
of
Savoy
FORCE-­‐VELOCITY-­‐POWER
outputs
of
Usain
Bolt’s
World
Record
Running
Speed
(m/s)
Distance
(m)
S(t) = Smax 1−e−t/τ
( )
Field
Measurements
In
competition
conditions
Computing
Modeled
Speed-­‐time
curve
Computed
Net
Horizontal
Force
output
Max
Power
Output
of
30
W/kg
reached
after
about
1
s…
Power
=
Force
x
Speed…
Specihic,
Field
Sprint
Force-­‐Velocity-­‐Power
prohile
Jean-­‐Benoit
Morin,
PhD
University
of
Nice
“F0”
“V0”
Pmax
Vopt
F0
and
V0
are
the
theoretical
maximal
outputs
of
the
system
Vopt
is
the
speed
at
which
Pmax
is
produced
The
magnitude
of
the
slope
(F0/V0)
describes
the
Force-­‐Velocity
prohile
of
the
athlete

28. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
WHAT
ABOUT
MASTERS?

29. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de PILOT
STUDY….
OCTOBER
3-­‐4,
2015
NICE
THANKS: Athletes, Organizers, Julien, Mehdi, Emilien, Guillaume
39
athletes
39
to
96
years
old
Sprint
mechanics
with
aging?
Force,
Power,
Velocity,
Effectiveness
Comparison
to
young
elite
data
Slawinski,
Scand
J
Med
Sci
Sport,
in
press

30. PERFORMANCE
EN
SPRINT
CHEZ
LES
ATHLÈTES
MASTER
–
JB
MORIN
Membre de
RESULTS…IN
PROGRESS

31. Membre de
Merci !