S Baerwalde

Publications (9)4.46 Total impact

• Article: Local and systemic effects on blood lactate concentration during exercise with small and large muscle groups.

  R Chudalla, S Baerwalde, G Schneider, N Maassen
  [show abstract] [hide abstract]
  ABSTRACT: To evaluate the relationship between lactate release and [lac](art) and to investigate the influence of the catecholamines on the lactate release, 14 healthy men [age 25+/-3 (SE) year] were studied by superimposing cycle on forearm exercise, both at 65% of their maximal power reached in respective incremental tests. Handgrip exercise was performed for 30 min at 65% of peak power. In addition, between the tenth and the 22nd minute, cycling with the same intensity was superimposed. The increase in venous lactate concentration ([lac](ven)) (rest: 1.3+/-0.4 mmol.l(-1); 3rd min: 3.9+/-0.8 mmol.l(-1)) begins with the forearm exercise, whereas arterial lactate concentration ([lac](art)) remains almost unchanged. Once cycling has been added to forearm exercise (COMB), [lac](art) increases with a concomitant increase in [lac](ven) (12th min: [lac](art), 3.2+/-1.3 mmol.l(-1); [lac](ven), 5.7+/-2.2 mmol.l(-1)). A correlation between oxygen tension (P(v)O(2)) and [lac](ven) cannot be detected. There is a significant correlation between [lac](art) and norepinephrine ([NE]) (y=0.25x+1.2; r=0.815; p<0.01) but no correlation between lactate release and epinephrine ([EPI]) at moderate intensity. Our main conclusion is that lactate release from exercising muscles at moderate intensities is neither dependent on P(v)O(2) nor on [EPI] in the blood.
  Pflügers Archiv - European Journal of Physiology 10/2006; 452(6):690-7. · 4.46 Impact Factor
• Article: High-energy-phosphates measured by 31P-MRS during LBNP in exercising human leg muscle.

  S Baerwalde, J Zange, K Muller, N Maassen
  [show abstract] [hide abstract]
  ABSTRACT: Subatmospheric pressure applied to the human body from the iliac crest caudally (Lower Body Negative Pressure, LBNP) has been known to cause various central and peripheral cardiovascular reactions. We investigated the effects of such a LBNP maneuver on energy metabolism of human skeletal leg muscle. We tested the hypothesis whether an altered fluid distribution induced by LBNP may cause any effect on aerobic and/or anaerobic energy metabolism and cellular pH-regulation during isometric contraction monitored by 31P-MRS.
  Journal of gravitational physiology: a journal of the International Society for Gravitational Physiology 08/1999; 6(1):P37-8.
• Conference Proceeding: Alterations in skeletal muscle energy metabolism under simulated orthostasis

  S. Baerwalde, K. Müller, J. Zange, N. Maassen
  6th Annual Congress of the European College of Sport Science (ECSS)-15th Congress of the German Society of Sport Science, Cologne, Germany, 24-28 July 2001;
• Conference Proceeding: High-energy-phosphates measured by 31P-MRS during LBNP in exercising human leg muscle

  S. Baerwalde, J. Zange, K. Müller, N. Maassen
  20th Annual International Gravitational Physiology Meeting, Orlando, Florida, USA, 6.-11. June 1999;
• Conference Proceeding: Significant delay in the rate of post exercise oxidative phosphorylation in human calf muscle after 7 days of HDT bedrest mearured non-invasively by 31P MRS

  J. Zange, S. Baerwalde, K. Müller
  21st Annual International Gravitational Physiology Meeting (ISGP); Nagoya, Japan, 3-8 April 2000;
• Article: High-energy-phosphates measured by 31P-MRS during LBNP in exercising human leg muscle

  S. Baerwalde, J. Zange, K. Müller, N. Maassen
  Journal of Gravitational Physiology. 6(1999-1):37-38.
• Conference Proceeding: Alterations in skeletal muscle energy metabolism under LBNP are independent from blood flow

  S. Baerwalde, K. Müller, J. Zange, N. Maassen
  21st Annual International Gravitational Physiology Meeting, Nagoya, Japan, 3-8 April 2000;
• Conference Proceeding: Effects of simulated orthostasis on force development, excitability, and energy metabolism in human m. tibialis anterior

  J. Zange, S. Baerwalde, K. Müller, N. Maassen
  Workshop Non invasive investigation of muscle function, Marseille, France, 4-6 October 2001;
• Conference Proceeding: Hypoxia influences lactate elimination and not lactate production during exercise of medium intensity

  S. Baerwalde, N. Maassen, F. Stifft, G. Schneider
  36th German Congress of Sports Medicine and Prevention, Freiburg i. Br., Germany, Sept 30 - Oct 2 1999;