References of "Jidovtseff, Boris"
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See detailAcceleration and gravity power: A concept for understanding total power output
Quievre, Jacques; Cronin, John; Harris, Nigel et al

in Computer Methods in Biomechanics & Biomedical Engineering (2010, August), 13(S1), 113-114

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See detailUSING INERTIA MEASUREMENT UNIT (IMU) FOR EXERCISE ANALYSIS
Jidovtseff, Boris ULg; Bruls, Olivier ULg; Tubez, François ULg et al

in 7th International conference on strength training - abstract book (2010)

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See detailRELEVANCE OF ACCELERATION AND GRAVITY POWER PROFILING
Jidovtseff, Boris ULg; Harris, Nigel; Cronin, John et al

Poster (2010)

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See detailUn filet … pour nager. L’expérience du Cereki
Delvaux, Anne ULg; Vandermeulen, Mary ULg; Jidovtseff, Boris ULg

in Science & Sports (2010), 25

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See detailLes profils musculaires inertiels permettent une définition plus précise des charge d'entraînement.
Jidovtseff, Boris ULg; Quièvre, Jacques; Hanon, Christine et al

in Science & Sports (2009), (24), 91-94

Aims of the study : the aim of the present study was to explore the interest of inertial load-velocity and load-power relationships for establishing resistance training zones. Materials and methods : 35 ... [more ▼]

Aims of the study : the aim of the present study was to explore the interest of inertial load-velocity and load-power relationships for establishing resistance training zones. Materials and methods : 35 subjects went twice at the laboratory. The first session was used to determine bench press one repetition maximal (1RM) while the second session was used to determine load-velocity and load-power relationships by the means of an inertial dynamometer. For each subject four major training zones (maximal velocity, power-velocity, strength-power, maximal strength), defined from the 1RM, were compared to the corresponding training zones defined from inertial load-velocity and load-power relationships. Results: training zones defined from the 1RM are significantly different (p<0,001) from the ones based on load-velocity and load-power relationships. According to load-power and load-velocity relationships results, maximal bench press velocity should be trained from 0 to 23% of the 1RM ; power-velocity should be trained from 25 to 54% of the 1RM ; strength-power should be trained from 54 to 82% of the 1RM and maximal strength should be trained with superior loads. Such muscular profiles defined with inertial dynamometers allow a more acute and individualised prescription for power-velocity resistance training. [less ▲]

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See detailThe Ability of Isoinertial Assessment to Monitor Specific Training Effects
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Scimar, Nathalie ULg et al

in Journal of Sports Medicine & Physical Fitness (2008), 48(1), 55-64

AIM: The aim of this study was to investigate the ability of isoinertial assessment to monitor training effects. Both parametric and curve analysis of the results were used to underline the specificity of ... [more ▼]

AIM: The aim of this study was to investigate the ability of isoinertial assessment to monitor training effects. Both parametric and curve analysis of the results were used to underline the specificity of maximal strength and maximal velocity resistance training methods. METHODS: Twenty-four untrained subjects were randomly assigned into three groups: a maximal strength-training group (heavy loads: 80% to 98% of the one repetition maximum [1-RM]), a maximal velocity-training group (light loads: 25% to 50% of 1-RM) and a control group. All the subjects were tested in bench press exercises before and after the 6-week training period. An isoinertial dynamometer was used to assess velocity and power at four increasing loads: 35%, 50%, 70% and 95% of the 1-RM load. Post-test protocol also included a trial at 105% of the 1-RM load. RESULTS: Isoinertial assessment demonstrated for both training groups significant gains at each load. Some specific adaptations appeared: strength training presented a greater increase for average power (+49%, P<0.001) and average velocity (+48%, P<0.001) at 95% of 1-RM, while velocity training emerged as a more effective way to improve performance at 35% and 50% of 1-RM (+11 to 22%) in comparison with strength training (+7 to 12%). The analysis of power and velocity curves specified that strength training enhanced performance earlier in the movement, while velocity training extended the propulsive action at the end of movement. CONCLUSION: The original combination of parametric and curve isoinertial assessment appears to be a relevant method for monitoring specific training effects. The complementarity of both strength and velocity training programmes underlined in this study could lead to practical applications in profiling training programmes. [less ▲]

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See detailValidité et reproductibilité d’un dynamomètre inertiel basé sur l’accélérométrie
Jidovtseff, Boris ULg; Crielaard, Jean-Michel ULg; Cauchy, Sébastien et al

in Science & Sports (2008), 23

Introduction : the purpose of this study was to investigate the validity and reliability of an inertial dynamometer using accelerometry. Methods : fourteen subjects were tested during three successive ... [more ▼]

Introduction : the purpose of this study was to investigate the validity and reliability of an inertial dynamometer using accelerometry. Methods : fourteen subjects were tested during three successive sessions at four increasing loads (30, 50, 70 and 95% of the 1RM). Maximal force, velocity and power performances were simultaneously assessed by the Myotest (Myotest S.A., Switzerland), an inertial dynamometer using accelerometry, and by another control valid dynamometer witch combine accelerometer and linear position transducer. At three first loads, only minor differences appeared between both dynamometers, correlations were excellent and coefficients of variation were good and similars. However, at 95% of the 1RM, Myotest validity and reliability became insufficient. Conclusion : Bench press inertial assessment with accelerometer appeared valid and reliable at 30, 50 and 70% of the 1RM, but not at 95% of the 1RM. [less ▲]

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See detailRelevance of inertial fatigue test in sport applications
Jidovtseff, Boris ULg; Cordonnier, Caroline ULg; Binard, Anne-Sophie et al

in Isokinetics & Exercise Science (2008), 16(3), 190

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See detailEvaluation inertielle : état de la question et perspectives
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Demoulin, Christophe ULg et al

in Science & Sports (2008), 20

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See detailValidity, reproducibility and sensitivity ofthe Myotest® during bench press exercise.
Jidovtseff, Boris ULg; Cauchy, Sébastien; Crielaard, Jean-Michel ULg et al

in Abstract Book of 6th International Conference on Strength Training (2008)

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See detailThe use of accelerometry in the assessment of vertical jump
Jidovtseff, Boris ULg; Lehance, Cédric ULg; Chauveau, Alexis et al

in Abstract book of 6th International Conference on Strength Training (Colorado Spring, USA) (2008)

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See detailWhat muscle performance assessment in high level young soccer players ?
Delvaux, François ULg; Herrbach, Nicolas; Namurois, Guy et al

in Abstract book du Premier Congrès Olympique Belge de Médecine et des Sciences du Sport (2008)

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See detailWhole-Body Vibration : quel intérêt dans l’entraînement des performances musculaires ?
Lehance, Cédric ULg; Jidovtseff, Boris ULg; Maquet, Didier ULg et al

in Croisier, Jean-Louis (Ed.) Abstract book du 3ème Colloque Médico-Sportif du RFCLiège Athlétisme (2007)

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See detailWhole-Body Vibration : quel intérêt dans l’entraînement des performances musculaires ?
Lehance, Cédric ULg; Jidovtseff, Boris ULg; Maquet, Didier ULg et al

in Croisier, Jean-Louis (Ed.) Abstract book du 3ème Colloque Médico-Sportif du RFCLiège Athlétisme (2007)

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See detailIsokinetic and iso-inertial assessments: Competion or complementarity?
Jidovtseff, Boris ULg; Crielaard, Jean-Michel ULg; Croisier, Jean-Louis ULg

in Isokinetics & Exercise Science (2007), 15(1), 52-53

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See detailInfluence of bench press exercise modality on the iso-inertial performance
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Crielaard, Jean-Michel ULg

in Science & Sports (2006), 21(3), 159-162

Introduction. - This study used an iso-inertial dynamometer to investigate the influence of counter-movement and barbell throwing during bench press exercise. A critical analysis of these modalities ... [more ▼]

Introduction. - This study used an iso-inertial dynamometer to investigate the influence of counter-movement and barbell throwing during bench press exercise. A critical analysis of these modalities during muscular evaluation was also performed. Methods. - The action of muscle stretch during the counter-movement induced an increase in average velocity and a shortening of the time to reach the peak power and peak velocity. The barbell throwing did not alter the initial part of the movement yet lengthened the propulsive phase and delayed the braking phase. Consequently, maximal power and maximal velocity performances were improved. However, the throwing of the barbell requires its catch when failing down, which could be potentially harmful. Conclusion. - The counter-movement and the throwing of the barbell significantly change the iso-inertial performances through a bench press exercise. The modalities of bench press assessment execution would have to be rigorously standardized. (c) 2006 Elsevier SAS. Tous droits reserves. [less ▲]

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See detailMise au point d'un dynamomètre de la puissance musculaire
Jidovtseff, Boris ULg

Doctoral thesis (2006)

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See detailThe concept of iso-inertial assessment: Reproducibility analysis and descriptive data
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Lhermerout, Claude ULg et al

in Isokinetics & Exercise Science (2006), 14(1), 53-62

The purpose of this study was to investigate the reproducibility of findings derived from a new iso-inertial dynamometer during bench press (BP) and squat (SQ) and to provide descriptive data for ... [more ▼]

The purpose of this study was to investigate the reproducibility of findings derived from a new iso-inertial dynamometer during bench press (BP) and squat (SQ) and to provide descriptive data for recreational athletes. A position transducer and accelerometer were combined to assess velocity and power during free weight lifting exercises. Simulated movement with a pulley system revealed the excellent technical consistency of the dynamometer. Sixteen male subjects participated in the study. Iso-inertial tests consisted of lifting as fast as possible four different relative loads (35, 50, 70, 90% 1RM in BP and 45, 60, 75, 90% 1RM in SQ). The test was repeated one week later. Analysis of variance revealed no significant variation between sessions or trials. Reproducibility was better in velocity than in power, although it remained fairly good in both exercises (coefficients of variation [CV] never exceeding 10%) except for the time to peak power parameter. Descriptive data confirmed the classical force-velocity and force-power relationships for BP and SQ. In conclusion, this study demonstrated reliable measurements in BP and SQ iso-inertial exercises. Monitoring force-velocity and force-power relationships offers an original functional approach in strength training supervision. [less ▲]

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