BONNER, H.W.; LESLIE, S.W.; COMBS, A.B.; TÃTE, CA.: Effects of exercise training and exhaustion on 45Ca uptake by rat skeletal muscle mitochondria and.
Arch. Tierz., Dummerstorf 44 (2001) 4, 441-450
Research Institute for the Biology of Farm Animals (FBN), Dummcrslorf, Germany
ULRICH KÜCHENMEISTER, MARTINA LANGHAMMER, ULLA RENNE, GERD NÜRNBERG and KLAUS ENDER
Effect of exercise on sarcoplasmic reticulum Ca2+ transport in muscle of mouse lines long-term selected for different Performance traits Dedicated to Prof. Dr. Dr. h. c. mult. Horst Kräußlich on the occasion 75'h birthday
ofhis
Summary Mouse lines used were long-term selected for high (DU-hTP) or low treadmill Performance (DU-ITP), or high locomotor open field activity (DU-hOF). The control line DU-Ks was maintained unselected. For each line 30 mice were used at 42 days of age. All lines were split into three groups: the first group was investigated without running exercise, the second had to run 500 m, and the third had to run until exhaustion on the treadmill. Compared to mice without running, in exhausted mice the maximal rate of SR Ca2+ uptake of the m. rectus femoris decreases were only found in the mouse lines DU-ITP, and DU-hOF (28.5 %, and 36.3 %, respectively; p » « * o f m i c e l 0 "g- t e ™ selected for different (Laufletstung, Körpergewicht und Gewicht des m. rectus femoris der selektierten
Run to exhaustion (meter) 1024 ± 382 a 1733 ± 364 a 765 ± 348 a 3005 ± 348 b
Body weight at day 42 26.9 ±0.41 b 24.0 ± 0.43 c 30.2 ± 0.42 d 24.5 ± 0.42 c
•weight m. rectus femoris (S) 0.117 ± 0.009 b 0.140 ± 0.009 b 0.177 ± 0.009 d 0.141 ± 0.009 c
different letters indicate significant difTerences between mouse lines (p
