Posted by Cris (24.66.94.141) on November 12, 2003 at 09:49:40:
In Reply to: Follow up to Dan's Question /LPB posted by Juerg on November 10, 2003 at 18:30:35:
Interesting data from textbook "physiology of sport and exercise" Wilmore, Costill (p. 306)
Re: overtraining/ overreaching/ fatigue
Vo2 70L
10k run time season beginning
30:53 run at 70% of Vo2 max
Late season (text refers to this individual as "overtrained" at end of season)
32:10 run at 80% of Vo2 max
We can see that this person utilized a higher % of their Vo2, but had a worse performance. It must not be assumed that higher Vo2 max and performing at a higher % of ones Vo2 max will result in better performance. Other variables, including fatigue factors influence the net energy produced for every litre of oxygen processed.
Juergs’ athlete result posting for lactate/ heart rate adaptations are common amongst well trained individuals. Trouble is, not many individuals are well trained, so the reference to these specific lactate/ heart rate adaptations are unknown to the majority of the coaching/ athletic population. One cannot discuss that which they do not know. If we read every fitness magazine on the rack, we would be hard pressed to find even a whiff of relevant training information.
Since the vast majority of coaches from all fields and athletes from all fields don’t measure and monitor their training in any significant way (heart rate/ lactate/ wattage/ Blood Glucose/ ammonia)(the exception is at the high end, where everybody does this), and since the popular literature does not publish these concepts, it can’t be expected that the majority of athletes and coaches would have these subjects in their daily conversation. The result is that real, tangible training principals and effects of training are not discussed or known by the vast majority of coaches and athletes, which further results in surprise, confusion, and conflict when first exposed to what physical training is really about, which thankfully is what the topic of discussion is here.
So for all those who have little exposure to this data, you will see in these posts the kinds of adaptations that are expected and what types of training is required to achieve these adaptations, then use this information to improve your own training.
Results of training intermittently active 45-year-old male becoming regularly active. Power is in calories per hour on a Lifecycle bike.
feb 6 2003 120 bpm la 539 cal /h la 2.8
feb 15 122bpm 611 cal/hr la 2.3
march 14 126bpm 651 cal/hr la 1.7
July 14 130 bpm 690 cal/ hr la 1.9
Note that 130 bpm at the end of 6 months has a lower lactate and higher power output than 120 bpm at the beginning. What HR prescriptions did I give for these results? How did lactate measurements help me make these prescriptions? It can be seen that using the 220 – age x 65% would be a useless Hr prescription method in this case (and all cases in my opinion).
Here’s a nice one:
Male, entry level Triathlete (half Ironman time last year 5:30)
Last year
HR 150 la 4.1 7mph (run)
This year
HR 165 la 1.1 7.6 mph (run)
The speed at Lactate threshold last year is slower than the base/ recovery speed this year.
What kind of training provided these results? Basic prescription followed about 80% easy to moderate intensity and 20% high intensity training.