Send to

Choose Destination
Int J Sports Med. 2017 Dec;38(14):1097-1104. doi: 10.1055/s-0043-119880. Epub 2017 Nov 10.

The Force-Velocity Relationship in Older People: Reliability and Validity of a Systematic Procedure.

Author information

GENUD Toledo Research Group, Universidad de Castilla-La Mancha, Toledo, Spain.
CIBER of Frailty and Healthy Aging (CIBERFES), Madrid, Spain.
Hospital Virgen del Valle, Complejo Hospitalario de Toledo, Toledo, Spain.
ImFINE Research Group, Universidad Politécnica de Madrid, Madrid, Spain.
Contributed equally


This study compared the reliability and validity of different protocols evaluating the force-velocity (F-V) relationship and muscle power in older adults. Thirty-one older men and women (75.8±4.7 years) underwent two F-V tests by collecting the mean and peak force and velocity data exerted against increasing loads until one repetition maximum (1RM) was achieved in the leg press exercise. Two attempts per load were performed, with a third attempt when F-V points deviated from the linear F-V regression equation. Then, the subjects performed 2×3 repetitions at 60% 1RM to compare purely concentric and eccentric-concentric repetitions. The Short Physical Performance Battery was conducted to assess the validity of the different protocols. Significant differences were found in maximal power (Pmax) between mean and peak values and between protocols differing in the number of attempts per load (p<0.01). Registering mean values, a third attempt, and multiple loads (>3), was significantly more reliable (Pmax: CV=2.6%; ICC=0.99) than the other alternatives. Mean values were also observed to be more associated with physical function than peak values (R2=0.34 and 0.15, respectively; p<0.05). No significant differences were observed between concentric and eccentric-concentric repetitions. Thus, collecting mean force and velocity values against multiple loads, while monitoring the linearity of the F-V relationship, seemed to be the more adequate procedure to assess the F-V profile and muscle power in older adults.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Georg Thieme Verlag Stuttgart, New York
Loading ...
Support Center