Most of my exercises at the gym are performed with sort recoveries.
1 This limits the amount of weight I can use, thereby avoiding injury from too heavy weights.
2 The increase in intramuscular pressure reduces oxygen levels in the muscle
3 Short recovery limits the restoration of blood flow
4 Result: fast-twitch (oxidative & glycolytic) muscles are recruited, which is what I want
5 Session length is reduced
6 CV system is used
It's crucial to work fast-twitch fibres as u age (you use them getting out of a chair)
They are the mass and strength muscles. You lose fast-twitch over slow-twitch as u age, so keep stimulating them
Aerobic exercise is important but it will turn u even more slow-twitch; u need to work both fibre types
Resistance training & sprinting. You want to get 'breathless'
Damn, meant *short* recoveries
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"...sub-max training & HIT did not improve VO2max of well-trained endurance runners. However, the vVO2max (Velocity at VO2max) can be increased using HIT or adding traditional strength training"
i.e. strength & fast running make u faster if not 'fitter'
'Several...studies have demonstrated that vVO2max is the best predictor of the 1500 m performance in well-trained runners...longitudinal studies have confirmed that 1500-m was improved after HIT only when vVO2max was increased..'
I intuitively feel this.
This is for 'well-trained' runners, but applies to all runners; however, if you are not well-trained you still need to develop your aerobic fitness (VO2) as there is no point only concentrating on the icing (HIT/Strength) if you have no cake (endurance).
I've been closely observing the frail elderly for the past few weeks - here's what I found.
1 'Frailness' is largely a lower-body problem. What I mean by this is frail legs have a larger negative impact on navigating the physical landscape than a frail upper-body