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

Nakamura, Masatoshi; Sutoh, Shigeki; Kiyono, Ryosuke; Sato, Shigeru; Yahata, Kazuhide; Hiraizumi, Kakeru; Morishita, Shinichiro

doi:10.1589/jpts.31.790

Cited by 4 publications

(8 citation statements)

References 24 publications

(29 reference statements)

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“…Our results showed a significant relationship between 1RM and MVIC, muscle thickness and thigh circumference for community-dwelling older population, consistent with previous reports on young healthy adults 9 , 10 , 11 ) . Although MVIC measurement is a static muscle strength measurement by isometric contraction, 1RM is a dynamic muscle strength measurement with joint movement, and the MVIC and 1RM measurements are different contraction modes.…”

Section: Discussionsupporting

confidence: 93%

“…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.…”

Section: Discussionsupporting

confidence: 89%

“…The MVIC measurements for 3 s were repeated three times with sufficient rest period. The maximal value of three measurement was adopted in future study, and we calculated the knee extension torque (Nm) base on the previous study 11 ) .…”

Section: Participants and Methodsmentioning

confidence: 99%

“…According to the previous study 11 ) , we measured the muscle thickness of quadriceps muscle (refutes femoris and vastus intermedius) used by ultrasonography (LOGIQ e V2; GE Healthcare Japan, Tokyo, Japan). We measured muscle thickness of quadriceps muscle at 5, 10, and 15 cm above the patella and the midpoint between the anterior superior iliac spine and the proximal end of the patella 11 , 12 ) . We defined the muscle thickness of quadriceps muscle as the distance between the inner edges of the fascia and the femoral bone.…”

Section: Participants and Methodsmentioning

confidence: 99%

“…In addition, Kanada et al reported that 1RM could be estimated more accurately using MVIC in addition to body composition measurement 10 ) . Furthermore, Nakamura et al focused on ultrasonography and circumference measurements, which is noninvisible and required minimal effort or cooperation from the participants, and reported that 1RM could be estimated more accurately by MVIC and ultrasound measurement 11 ) . However, the participants in these previous studies were young healthy participants, and it is unclear whether there was a similar relationship between 1RM and MVIC, muscle thickness, and circumference in older population who have many opportunities to be prescribed resistance training.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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[Purpose] One-repetition maximum is an essential statistic for physical therapists and coaches in rehabilitation and athletic settings. In a previous study, we showed that one-repetition maximum of the knee extensor could be predicted more accurately with the combination of maximal voluntary isometric contraction strength, as measured by a handheld dynamometer, muscle thickness, and thigh circumference, in young adults. However, there has been no study in older adults investigating the relationship between one-repetition maximum and maximal voluntary isometric contraction strength, or muscle thickness, and thigh circumference. Therefore, the aim of this study was to investigate the relationship between one-repetition maximum and maximal voluntary isometric contraction strength, or muscle thickness, and thigh circumference in older adults. [Participants and Methods] Twenty-eight older community-dwelling adults (18 males and 10 females) participated in this study. Muscle strength of the knee extensor was measured using one-repetition maximum and maximal voluntary isometric contraction strength. In addition, muscle thicknesses of the refutes femoris and the vastus intermedius, and thigh circumference were measured using ultrasonography and measuring tape, respectively. [Results] Stepwise regression analysis revealed that body mass, gender, thigh circumference at 15 cm above the patella, and maximal voluntary isometric contraction strength were significant and independent determinants (R 2 =0.868). [Conclusion] One-repetition maximum could be predicted more accurately using a combination of maximal voluntary isometric contraction strength, as measured with a handheld dynamometer, and thigh circumference in older adults.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 89%

Section: Participants and Methodsmentioning

confidence: 99%

Section: Participants and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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Factors involved in higher knee extension torque induced by repetitive peripheral magnetic stimulation

KAMIUE∗,

ITO∗,

TSUBAHARA∗

et al. 2023

Am J Phys Med Rehabil

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Objective The study aimed to determine the relationship between knee extension torque induced by repetitive peripheral magnetic stimulation (rPMS) and the characteristics of the participants. Design This was a basic study with non-invasive intervention. Knee extension torque induced by rPMS (rPMS-induced torque) and maximum voluntary contraction (MVC) were measured. Stepwise method of multiple regression was performed to determine the factors affecting rPMS-induced torque at 100% intensity and rPMS-induced torque divided by MVC (%MVC). Subcutaneous fat thickness, VL muscle thickness measured by ultrasound, MVC, and mean power frequency of electromyography (EMG) during MVC were selected as independent variables. Results rPMS was applied to the right vastus lateralis (VL) of 30 young healthy adults (average age, 21.1 ± 0.3 years). In the multiple regression analysis, rPMS-induced torque (p < 0.001) was shown to be independently and significantly associated with MVC (β = 0.510), subcutaneous fat thickness (β = -0.358), and VL muscle thickness (β = 0.208), while %MVC value (p < 0.05) was independently and significantly associated with VL muscle thickness (β = 1.059). Conclusion rPMS-induced torque decreases with thicker subcutaneous fat and increases with stronger MVC or with thicker muscle.

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Characteristics of muscle contraction of the rectus femoris using Tensiomyography by sex in healthy adolescents: a Cross-Sectional Study

Kusumoto

Goto

Chiba

et al. 2021

Preprint

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Background Tensiomyography (TMG) is a non-invasive instrument for measuring mechanical muscle contraction characteristics, and measures the maximum displacement of the muscle belly in the vertical direction and the time needed to achieve this from electrical stimulation. There have only been few reports of TMG on general healthy adults. A systematic review on TMG reported a low proportion of female participants with a small sample size. Therefore, it is unclear whether there is a difference in TMG parameters by sex and between the dominant and non-dominant feet. Furthermore, the relationship between the TMG parameters and the evaluations commonly used in clinical practice has not been clarified. This study aimed to clarify the characteristics of muscle contraction of the rectus femoris using tensiomyography by sex among healthy adolescents and its relationship with muscle function evaluation, such as lower limb muscle mass and muscle strength. The subjects included 91 healthy university students. The measurement items included TMG, lower limb muscle mass, rectus femoris thickness, isometric knee joint extension torque, and thigh circumference. Results There was a main effect on sex in all parameters (ρ ≤ 0.05). In terms of TMG parameters, maximum displacement (Dm) in the non-dominant foot was significantly lower in women. The correlation between TMG parameters for males and females and lower limb muscle mass, muscle thickness, joint torque, and thigh circumference had a significant correlation with some TMG parameters and lower limb muscle mass (ρ ≤ 0.05). The absolute value of the correlation coefficient was overall low with 0.27 ~0.45. Conclusion In healthy adolescents, there was a difference by sex in TMG parameters and a weak correlation between TMG parameters and the lower limb muscle mass. TMG parameter evaluation may indicate a different function compared with the traditional muscle function assessment used in clinical practice. The TMG parameter is considered as a unique evaluation method for neuromuscular function assessment.

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

Cited by 4 publications

References 24 publications

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

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

Factors involved in higher knee extension torque induced by repetitive peripheral magnetic stimulation

Characteristics of muscle contraction of the rectus femoris using Tensiomyography by sex in healthy adolescents: a Cross-Sectional Study

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