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Article Dans Une Revue Journal of Strength and Conditioning Research Année : 2008

Importance of Upper-Limb Inertia in Calculating Concentric Bench Press Force

Résumé

The purpose of this study was to investigate the influence of upper-limb inertia on the force-velocity relationship and maximal power during concentric bench press exercise. Reference peak force values (Fpeakp) measured with a force plate positioned below the bench were compared to those measured simultaneously with a kinematic device fixed on the barbell by taking (Fpeakt) or not taking (Fpeakb) upper-limb inertia into account. Thirteen men (27.8 6 4.1 years, 184.6 6 5.5 cm, 99.5 6 18.6 kg) performed all-out concentric bench press exercise against 8 loads ranging between 7 and 74 kg. The results showed that for each load, Fpeakb was significantly less than Fpeakp (P , 0.0001), whereas no significant difference was found between Fpeakp and Fpeakt. The values of maximal force (F0), maximal velocity (V0), optimal velocity (Vopt), and maximal power (Pmax), extrapolated from the force-and power-velocity relationships determined with the kinematic device, were significantly underestimated when upper-limb inertia was ignored. The results underline the importance of taking account of the total inertia of the moving system to ensure precise evaluation of upper-limb muscular characteristics in all-out concentric bench press exercise with a kinematic device. A major application of this study would be to develop precise upper-limb muscular characteristic evaluation in laboratory and field conditions by using a simple and cheap kinematic device.
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Dates et versions

hal-02510452 , version 1 (17-03-2020)

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Olivier Rambaud, Abderrahmane Rahmani, Bernard Moyen, Muriel Bourdin. Importance of Upper-Limb Inertia in Calculating Concentric Bench Press Force. Journal of Strength and Conditioning Research, 2008, 22 (2), pp.383-389. ⟨10.1519/JSC.0b013e31816193e7⟩. ⟨hal-02510452⟩
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