.
<Any thoughts on this [squat jumps]? I would like some advice as I have a
friend who insists on doing this potentially harmful movement with heavy
weights to increase his “explosiveness”.>
*** You do not necessarily have to jump off the floor when doing “jump
squats”. You can try to produce as much vertical force as possible so that
you may rise high onto your toes without leaving the platform. Explosiveness
is not a quality which is best developed by producing large forces under very
heavy loading, but with less heavy weights which allow one to produce high
RFD (Rate of Force Development) and peak power. This means executing
stretch-shortening or prestretching exercises which have a short coupling Read more…
25
May
Author: Dr Mel Siff Blog // Category:
Blogs with Facts and Fallacies
FACTS AND FALLACIES OF FITNESS (Mel C Siff 2000 ) 300 pages. by far one of the most important books that each of you should possess. training regimens that demand smart nutrition. The subjects receiving the bioflavonoids took three 300 ...
17
May
Author: Dr Mel Siff Blog // Category:
Dr Siff on Injuries/Disease
With the great amount of attention currently being paid to the testing and
training of balance, this abstract may be of interest.
—————————
Burke Gurney, James Milani & Marybeth E Pedersen
ROLE OF FATIGUE ON PROPRIOCEPTION OF THE ANKLE
J of Exerc Physiol online, Journal of The Amer Soc of Exercise Physiologists
Vol 3 No 1 January 2000
Proprioception comprises of sensory input from several sources including
skin, joint capsule/ligaments, and muscle spindles. It remains unclear to
what degree each component contributes to the overall proprioceptive picture.
If the muscle spindle plays a leading role as currently thought, then muscle
fatigue might yield a declination in proprioceptive awareness. The purpose of
this study was to examine the role fatigue plays in altering joint
repositioning sense in the ankle. Eighty-five (age mean=39.2, range=19-77
yrs) non-impaired subjects were asked to recognize a pre-determined position
of plantarflexion both with and without exercise to fatigue. Order of
exercise/non-exercise was randomly assigned. The average of the absolute
value deviations from the target position of three trials were recorded as
scores for both fatigue and non-fatigue conditions and treated as repeated
measures.
There was no significant difference in subject’s ability to recognize passive
repositioning of their ankle with and without fatigue. Muscle fatigue does
not seem to play a part in joint repositioning in the ankle. The
inconsistency of these results with other findings using similar protocols in
the shoulder and knee are discussed.
——————————
Dr Mel C Siff
17
May
Author: Dr Mel Siff Blog // Category:
Blogs with Supertraining
stated that this basic construction is not necessarily appropriate - there is no scientific reason why one should not include some SPP in the GPP phase and vice versa (Siff & Verkhoshansky “Supertraining” 1999 Ch 6). Dr Mel C Siff ...
17
May
Author: Dr Mel Siff Blog // Category:
Blogs with Supertraining
stated that this basic construction is not necessarily appropriate - there is no scientific reason why one should not include some SPP in the GPP phase and vice versa (Siff & Verkhoshansky “Supertraining” 1999 Ch 6). Dr Mel C Siff ...