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Juerg Feldmann

Fortiori Design LLC
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Posts: 1,530
 #1 
Here a case study done by Next Level SP ( Brina Kozak.
 We did hyper and hypocapnia mixed with normo capnia.
 You think  we show.
 Yellow is tHb and  purple is  Hb diff.
 It was a 15 min " warm up on a bike  followed by  stable wattage  10 min one respiratory intervention 5 min  normo breathing and 10 min next intervention  5 min normo and  followed by third intervention.
  Remember  NIRS is  like being there. So explain to yourself or on here what you see just from the pictures

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Juerg Feldmann

Fortiori Design LLC
Registered:
Posts: 1,530
 #2 
Question one to the "warm up " of a physiological system :
 What do you expect to see, if you give a physiological system a proper intensity to warm up.
1. tHb up,. down or stable ?
2. SmO2  or TSI up ,  down  or stable.

3.If  the initial load is too high , what would you expect from this 2 values ?

How long do you think  a vascularisation reaction will take  to show the full proper respond ? ( answer in minutes )

Juerg Feldmann

Fortiori Design LLC
Registered:
Posts: 1,530
 #3 
Hope you gave yourself a great answer as we soon will show some of this reactions and how individual they can be.
 This case study was done to  at least convince us, that the idea of having " zoning" based on wattage or on HR or on % of what ever  has  no physiological backings at all.
 If we decide to coach individual and create  individual stimulation's we have to accept the fact, that we have to combine different bio markers to see, where and how the individual system may react.
 Example.  We will be able to use a very low wattage as a performance load but still be able to create a deoxygenation like we would go all out. This allows us now to  let one system rest as another system can be loaded.
 How ? Well you are well underway to unravel this options bu thinking with us through this fascinating ideas.
  The whole idea of ECGM or CG  starts to get more and more discussed and understood.
  Next month will be a great meeting with some out of the BOX thinking people in California form a big  organization and  end of may is an international meeting from different groups as well from coaches in Switzerland  to test and put this ideas under scrutiny. After this   sessions we will be well underway to see, where and how we will proceed in the USA and in Canada with  information's, possibly workshops and seminars.  So stay updated on here and keep your eyes and ears open.
Juerg Feldmann

Fortiori Design LLC
Registered:
Posts: 1,530
 #4 
Here in short some observation in the warm up phase of our case study on influence of hyper and hypocapnia on the oxygenation trend.
Juerg Feldmann

Fortiori Design LLC
Registered:
Posts: 1,530
 #5 
Here the follow up in some short words. What the small case study indicates is the possibility , that respiration , if long enough applied can actually change the bio availability of the  oxygen in the tissue.
 That could be one  possible explanation , why many studies indicate a connection between NIRS trend and VT.

"

a Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, “Evgenidio” Hospital, National and Kapodistrian University of Athens, 20 Papadiamantopoulou St, Athens 11528, Greece

b Track and Field Unit, Department of Sports and Exercise Science, National and Kapodistrian University of Athens, Greece

Received 29 May 2008; revised 6 January 2009; accepted 4 February 2009. Available online 25 February 2009.

Abstract
This study was designed to investigate the efficacy of the near-infrared spectroscopy (NIRS) methodology in exploring the relationship between ventilatory (VT) and NIRS-determined threshold on the gastrocnemius muscle during running. Seventeen healthy participants, 11 males and 6 females performed an incremental exercise test until volitional exhaustion on a treadmill. Initial speed was set at 8 km/h with increments of 0.5 km/h per minute. Tissue oxygen saturation (StO2) was obtained from the belly of the left gastrocnemius muscle. Running velocity at the NIRS threshold was evaluated with StO2–velocity plots, employing two different models: linear (NTlin) and Dmax (NTD). Significant difference in velocity was observed between NTD (11.7 ± 0.9 km/h) and VT (11.2 ± 1.2 km/h). However, no difference in velocity was observed between VT and NTlin (11.6 ± 0.8 km/h, p > 0.05), and between the two NIRS methods (p > 0.05). VT velocity was significantly correlated (p <0.05)> 0.05). Furthermore, small but significant differences (p < 0.05) were found between VO2 and heart rate at VT and NT, expressed in either relative or maximum percentage values. Both NIRS-derived models were well correlated with VT and did not differ from each other. NIRS methodology applied on the gastrocnemius muscle was found to provide a useful means of detecting VT during treadmill running and to be practically appropriate in prescribing exercise training in running.

Relevance to industry
Human performance assessment is useful in the field of occupational health or industry. Ventilatory threshold along with NIRS methodology could be used in the field or a simulated environment to evaluate performance of professionals involved in physically demanding activities, such as firefighting and construction.


Juerg Feldmann

Fortiori Design LLC
Registered:
Posts: 1,530
 #6 
Here is just for fun another case study.
 Fixed wattage from point K on. The only part which changed was the way  the respiration and with it the CO2 level was manipulated.
 The best trace to observe is the red ( O2Hb0 trace in combination with green TSI %  . You will see 2 red traces , one is T1 and one is T3. What can you see.
 ?

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