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Title: Effets aigus de la préactivation musculaire du quadriceps sur la performance dans le test assis-debout chez des sujets âgés
Authors: Nasr, Riad
Hage, Rawad El 
Jacob, Christophe 
Affiliations: Department of Physical Education 
Department of Physical Education 
Keywords: Functional strength
Maximal strength
Post-activation potentiation
Issue Date: 2015
Part of: La revue de gériatrie
Volume: 40
Issue: 1
Start page: 5
End page: 9
Introduction: The aim of this study was to explore the effects of muscular preactivation of the quadriceps on the performance in the sit-to-stand test (5 times) in a group of elderly subjects. Methods and results: The performance in the sit-tostand test (5 times) was measured in 21 elderly subjects (age > 65 years) who can independently perform the sit-to-stand test. These measurements were taken without preactivation and right after (TO), 2 minutes after (T2), 4 minutes after (T4) and 8 minutes after (T8) 4 explosive concentric contractions of the quadriceps at 40% of the maximal strength (1RM of the leg extension). The results of this study showed that the test durations were significantly lower after muscular preactivation at all the times TO (p<0.05), T2 (p<0.001), T4 (p<0.001), T8(p<0.001). Conclusion: This study suggests that, in elderly subjects, the use of conditioning contractions of the quadriceps may enhance performance in the sit-to-stand test.
Type: Journal Article
Appears in Collections:Department of Physical Education

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