Predicting 1 Repetition Maximum Using Handheld Dynamometry

Abstract

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Efficacies of ultrasound and a handheld dynamometer to predict one-repetition maximum

“…In addition, our results revealed that 1RM could be predicted more accurately by a combination of MVIC and muscle thickness than by MVIC only. These results supported the findings of Tan et al8 ) and Kanada et al 7. ) , which reported that MVIC measured by HHD was effective for 1RM prediction.…”

“…1RM is defined as the maximum load that can be moved throughout a full range of motion without deviating from proper form and can be measured using a torque machine or a dynamometer. It is important to measure 1RM accurately in order to determine the training load and the number of repetition7,8,9,10 ) . In addition, there have been some studies on 1RM measurement among the elderly and clinical population11, 12 ) .…”

“…In previous studies, the handheld dynamometer (HDD) was reported to be an accessible and inexpensive instrument that is used to measure maximum voluntary isometric contraction (MVIC) strength for 1RM prediction. Specifically, Tan et al reported that 1RM of knee extensors and elbow flexors were predicted more accurately by MVIC as measured using HHD8 ) . In addition, Kanada et al reported that 1RM was predicted more accurately by a combination of MVIC and body composition measurements than by MVIC measurement only7 ) .…”

One-repetition maximum can be estimated with a handheld dynamometer and circumference in community-dwelling older adults

“…In addition, the results of stepwise regression analysis revealed that MVIC, age, gender, and thigh circumference at 15 cm above the patella were significant and independent determinants for 1RM estimation (R 2 =0.868). These results expand on the findings of the previous studies for investigating the relationship of 1RM and MVIC for young healthy adults 9 , 10 , 11 ) . The reason why the thigh circumference was extracted significantly without extracting muscle thickness was to measure only the muscle thickness of refutes femoris and vastus immedialis in the knee extensor muscle group.…”

“…Previous studies have focused on maximum voluntary isometric contraction measured using a handheld dynamometer (HDD) that is highly reliable, for 1RM estimation. In particular, Tan et al reported that 1RM of knee extensors and elbow flexors was estimated using MVIC as measured using HDD 9 ) . In addition, Kanada et al reported that 1RM could be estimated more accurately using MVIC in addition to body composition measurement 10 ) .…”