Validity of trunk extensor and flexor torque measurements using isokinetic dynamometry

Guilhem, Gaël; Giroux, Caroline; Couturier, Antoine; Maffiuletti, Nicola A.

doi:10.1016/j.jelekin.2014.07.006

Cited by 64 publications

(45 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Maximal isometric strength in trunk flexion, extension, and lateral flexion was measured using the Humac NORM Isokinetic dynamometer (Humac NORM, Computer Sports Medicine, Stoughton, MA, USA) with the trunk extension‐flexion modular component. Isokinetic dynamometry has previously been reported to be a reliable and valid method for measuring trunk muscle strength . The measurement procedure of maximal isometric trunk strength has been described previously …”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Trunk exercise training improves muscle size, strength, and function in older adults: A randomized controlled trial

Shahtahmassebi

Hébert

Hecimovich

et al. 2019

Scandinavian Med Sci Sports

View full text Add to dashboard Cite

The aim of this study was to assess the effectiveness of a multimodal exercise program to increase trunk muscle morphology and strength in older individuals, and their associated changes in functional ability. Using a single‐blinded parallel‐group randomized controlled trial design, 64 older adults (≥60 years) were randomly allocated to a 12‐week exercise program comprising walking and balance exercises with or without trunk strengthening/motor control exercises; followed by a 6‐week walking‐only program (detraining; 32 per group). Trunk muscle morphology (ultrasound imaging), strength (isokinetic dynamometer), and functional ability and balance (6‐Minute Walk Test; 30 second Chair Stand Test; Sitting and Rising Test; Berg Balance Scale, Multi‐Directional Reach Test; Timed Up and Go; Four Step Square Test) were the primary outcome measures. Sixty‐four older adults (mean [SD]; age: 69.8 [7.5] years; 59.4% female) were randomized into two exercise groups. Trunk training relative to walking‐balance training increased (mean difference [95% CI]) the size of the rectus abdominis (2.08 [1.29, 2.89] cm2), lumbar multifidus (L4/L5:0.39 [0.16, 0.61] cm; L5/S1:0.31 [0.07, 0.55] cm), and the lateral abdominal musculature (0.63 [0.40, 0.85] cm); and increased trunk flexion (29.8 [4.40, 55.31] N), extension (37.71 [15.17, 60.25] N), and lateral flexion (52.30 [36.57, 68.02] N) strength. Trunk training relative to walking‐balance training improved 30‐second Chair Stand Test (5.90 [3.39, 8.42] repetitions), Sitting and Rising Test (1.23 [0.24, 2.23] points), Forward Reach Test (4.20 [1.89, 6.51] cm), Backward Reach Test (2.42 [0.33, 4.52] cm), and Timed Up and Go Test (−0.76 [−1.40, −0.13] seconds). Detraining led to some declines but all outcomes remained significantly improved when compared to pre‐training. These findings support the inclusion of trunk strengthening/motor control exercises as part of a multimodal exercise program for older adults.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Isokinetic dynamometry has previously been reported to be a reliable and valid method for measuring trunk muscle strength. 28,29 The measurement procedure of maximal isometric trunk strength has been described previously. 14…”

Section: Trunk Muscle Strengthmentioning

confidence: 99%

Trunk exercise training improves muscle size, strength, and function in older adults: A randomized controlled trial

Shahtahmassebi

Hébert

Hecimovich

et al. 2019

Scandinavian Med Sci Sports

View full text Add to dashboard Cite

show abstract

“…There have been many studies on the extension and flexion strength of the trunk muscles, and the reported results have indicated that extension was stronger than flexion (Flint, 1958; Guilhem et al, 2014; Mayer et al, 1985; McNeill et al, 1980; Smidt et al, 1980). The reason for this is that the cross section during trunk extension is bigger than during flexion.…”

Section: Discussionmentioning

confidence: 99%

“…The dynamometer used in our study was designed to enable trunk flexion and extension movements in an up-right position, with the feet positioned on two horizontal footplates, and the knees in a slightly flexed position (10°–20°). We measured trunk strength during trunk flexion from −10° to 50°, and during trunk extension from 50° to −10° (Davies and Gould, 1982; Guilhem et al, 2014). …”

Section: Methodsmentioning

confidence: 99%

Assessment of isokinetic muscle function in Korea male volleyball athletes

Kim¹,

Jeoung²

2016

J Exerc Rehabil

View full text Add to dashboard Cite

Volleyball players performed numerous repetitions of spike actions, which uses and requires strong and explosive force, and control of the muscles of the shoulder, lower back, and legs. Muscle imbalance is one of the main causes of sport injuries. The purpose of this study was to assess isokinetic muscle functions in male volleyball players. We thus aim to accurately evaluate their muscle functions, and identify the best training strategy to achieve optimal muscle strength balance in future training programs. The participants in this study consisted of 14 male volleyball players. Muscle strength was measured using the isokinetic dynamometer. Muscle strength was evaluated in terms of peak torque and average power, calculated from five repeated measurements at an angular speed of 60°/sec. Three players who were left attackers showed shoulder imbalance, four players showed trunk joint imbalance, nine players had knee joint of extension/flexion imbalance and four players showed left/right imbalance. The results showed that the number of volleyball players with differences between the strength of the bilateral knee muscles, and between the strength of the hamstrings and quadriceps muscles was higher than the number of players with differences between the strength of the shoulder internal and external rotation muscles, and higher than the number of players with differences between the strength of the lower back extension and flexion muscles.

show abstract

“…This technology allows the muscles to produce maximum muscle strength in all parts of the range of motion in concentric and eccentric contractions, which can not be obtained with tests with constant load. (13,14) Theoretically, the values obtained in isokinetic tests are more realistic in relation to muscle performance and helps to identify differences in the flexor and extensor muscles of the trunk and can these be crucial for analysis and stability control as seen for other joints. (15,9,16,4,17) Therefore, this study aimed to evaluate and compare the relationship flexors/extensors of the trunk muscles in sedentary men and women, asymptomatic through the isokinetic dynamometer.…”

Section: Introductionmentioning

confidence: 99%

The trunk extensor flexor relationship in men and women by isokinetic dynamometry

Simbala¹,

Czaikoski²,

Eduardo³

et al. 2015

mtprehabjournal

View full text Add to dashboard Cite

Introduction:The thoracolumbar musculature plays a key role in the balance and stability of the pelvis. The isokinetic dynamometer provides accurate assessment of muscle performance and treatment guidance. Objective: To compare the flexors / extensors of the trunk link between sedentary men and women, asymptomatic by isokinetic dynamometry. Method: An observational cross-sectional study. The sample consisted of 100 asymptomatic sedentary volunteers, 50 males and 50 females with a mean age of 22.2 ± 3.3 years. The collection was made in the center of isokinetic dynamometry of the university grew. The Cybex Norm isokinetic dynamometer Model 7000 ™, trunk module was used. The subjects were weighed and measured, made global warming a 5 minutes cycle ergometer unloaded. Tested the flexor and extensor muscles in concentric and eccentric contractions, with an interval of three minutes between each assessment. We adopted a range of 10 degrees of extension to 70 degrees of flexion, with five repetitions at angular velocity 60 ͨ / s performing maximal strength. Familiarity with the equipment was done in the way of submaximal intensity contraction. The analysis was performed using SPSS, version 20.0 (p <0.05). Results: muscle ratio for females was higher compared to males, demonstrating in men greater deficit flexors compared to extensors of the trunk. Conclusion: no significant neither for females nor for males difference. Confirming that the ratio of muscle strength agonist/antagonist of a joint should not change regardless of the mode of contraction is tested.

show abstract

Validity of trunk extensor and flexor torque measurements using isokinetic dynamometry

Cited by 64 publications

References 42 publications

Trunk exercise training improves muscle size, strength, and function in older adults: A randomized controlled trial

Trunk exercise training improves muscle size, strength, and function in older adults: A randomized controlled trial

Assessment of isokinetic muscle function in Korea male volleyball athletes

The trunk extensor flexor relationship in men and women by isokinetic dynamometry

Contact Info

Product

Resources

About