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| Study: Muscle Strength and Metabolism in Master Athletes http://masterstrack.com/forums/viewtopic.php?f=2&t=1086 |
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| Author: | Discusdoc [ Sun Aug 30, 2009 10:39 am ] |
| Post subject: | Study: Muscle Strength and Metabolism in Master Athletes |
Muscle Strength and Metabolism in Master Athletes. Int J Sports Med. 2009 Aug 14. [Epub ahead of print] Links Louis J, Hausswirth C, Bieuzen F, Brisswalter J. Knee extensor muscle strength and metabolism were examined in endurance trained young versus master athletes (10 elderly: 62.5+/-4.1 yr and 10 young: 26.2+/-2.4 yr). Before and immediately after a resistance strength training (RST), subjects performed a maximal isometric voluntary contraction (MVC) and a 10-min cycling test at a same relative intensity. During MVC, evoked contractions of the knee extensors muscles were performed to assess neuromuscular properties. Metabolism was assessed using oxygen uptake kinetics model. Before the RST session master athletes showed lower knee extensors MVC values than young subjects (257 vs. 354 N p<0.05) without any difference in oxygen kinetics (respectively for elederly and young: oxygen slow component (VO (2)(sc)): 231 vs. 214 ml . min (-1) and time constant (tau (1)): 27.8 vs. 25.1 s, p>0.05). After the RST session, a similar effect of fatigue was observed on muscular properties and oxygen kinetics whatever the group (respectively for elderly and young: MVC: -13.4 vs. -15.9%; VO (2)(sc): +11.8 vs.+25.2% and tau (1): -15.4 vs. -13.9%). Our results suggest that the ability of master athletes to perform exercise at a given intensity is maintained despite a significant loss in strength with ageing. |
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| Author: | BMo [ Wed Sep 02, 2009 7:37 pm ] |
| Post subject: | |
Interesting. Small N but decent power. So, basically we can perform with the same intensity but our results are diminished because we're not as strong. Time to hit the gym. |
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