Validity of the Myotest® in measuring force and power production in the squat and bench press.
J Strength Cond Res
; 25(8): 2293-7, 2011 Aug.
Article
in En
| MEDLINE
| ID: mdl-21747293
ABSTRACT
The purpose of this study was to verify the concurrent validity of a bar-mounted Myotest® instrument in measuring the force and power production in the squat and bench press exercises when compared to the gold standard of a computerized linear transducer and force platform system. Fifty-four men (bench press 39-171 kg; squat 75-221 kg) and 43 women (bench press 18-80 kg; squat 30-115 kg) (age range 18-30 years) performed a 1 repetition maximum (1RM) strength test in bench press and squat exercises. Power testing consisted of the jump squat and the bench throw at 30% of each subject's 1RM. During each measurement, both the Myotest® instrument and the Celesco linear transducer of the directly interfaced BMS system (Ballistic Measurement System [BMS] Innervations Inc, Fitness Technology force plate, Skye, South Australia, Australia) were mounted to the weight bar. A strong, positive correlation (r) between the Myotest and BMS systems and a high correlation of determination (R2) was demonstrated for bench throw force (r = 0.95, p < 0.05) (R2 = 0.92); bench throw power (r = 0.96, p < 0.05) (R2 = 0.93); squat jump force (r = 0.98, p < 0.05) (R2 = 0.97); and squat jump power (r = 0.91, p < 0.05) (R2 = 0.82). In conclusion, when fixed on the bar in the vertical axis, the Myotest is a valid field instrument for measuring force and power in commonly used exercise movements.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Weight Lifting
/
Muscle, Skeletal
/
Exercise Test
/
Muscle Strength
/
Resistance Training
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
J Strength Cond Res
Journal subject:
FISIOLOGIA
Year:
2011
Document type:
Article
Affiliation country:
United States