TY  - JOUR
A1  - Mühlbauer, Thomas
A1  - Besemer, Carmen
A1  - Wehrle, Anja
A1  - Gollhofer, Albert
A1  - Granacher, Urs
T1  - Relationship between strength, power and balance performance in seniors
T2  - Gerontology
N2  - Background: Deficits in strength, power and balance represent important intrinsic risk factors for falls in seniors. Objective: The purpose of this study was to investigate the relationship between variables of lower extremity muscle strength/power and balance, assessed under various task conditions. Methods: Twenty-four healthy and physically active older adults (mean age: 70 8 5 years) were tested for their isometric strength (i.e. maximal isometric force of the leg extensors) and muscle power (i.e. countermovement jump height and power) as well as for their steady-state (i.e. unperturbed standing, 10-meter walk), proactive (i.e. Timed Up & Go test, Functional Reach Test) and reactive (i.e. perturbed standing) balance. Balance tests were conducted under single (i.e. standing or walking alone) and dual task conditions (i.e. standing or walking plus cognitive and motor interference task). Results: Significant positive correlations were found between measures of isometric strength and muscle power of the lower extremities (r values ranged between 0.608 and 0.720, p < 0.01). Hardly any significant associations were found between variables of strength, power and balance (i.e. no significant association in 20 out of 21 cases). Additionally, no significant correlations were found between measures of steady-state, proactive and reactive balance or balance tests performed under single and dual task conditions (all p > 0.05). Conclusion: The predominately nonsignificant correlations between different types of balance imply that balance performance is task specific in healthy and physically active seniors. Further, strength, power and balance as well as balance under single and dual task conditions seem to be independent of each other and may have to be tested and trained complementarily.
KW  - Steady-state balance
KW  - Proactive/reactive balance
KW  - Force production
KW  - Single/dual tasking
KW  - Cognitive/motor interference
Y1  - 2012
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/36246
SN  - 0304-324X
VL  - 58
IS  - 6
SP  - 504
EP  - 512
PB  - Karger
CY  - Basel
ER  -