Effect of muscle mass asymmetric between upper and lower limbs on the postural stability and shock attenuation during landing

Ryew, Che-Cheong; Lee, Ae-Ri; Hyun, Seung-Hyun

doi:10.12965/jer.1938188.094

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…It was observed that a decrease in strength and muscle mass LL is associated with a higher injury risk [46]. Generally, LL tissue composition influences its function in terms of postural stability [47], which is related to ankle injuries [48] and external forces absorption in various activities. The lower extremity with less muscle mass could absorb fewer external forces than the second extremity, leading to injury [49].…”

Section: Discussionmentioning

confidence: 99%

Force, Power, and Morphology Asymmetries as Injury Risk Factors in Physically Active Men and Women

2022

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This study aimed to investigate whether asymmetry of force, power, and tissue morphology are lower limbs (LL) injury risk factors in physically active adults. Fifty-eight men aged 23.8 ± 1.2 years and forty-seven women aged 23.3 ± 1.0 years were examined. Physical activity level was measured by the International Physical Activity Questionnaire, and injury data were collected with the Injury History Questionnaire. The countermovement jump was performed to evaluate force and power. LL tissue composition was evaluated by a bioimpedance analyzer. The symmetry indices were calculated. A comparison between injured and non-injured subjects in both sexes was conducted to determine indices associated with injuries. The symmetry indices cut-off points were calculated to establish values indicating a significant injury risk increase, and logistic regression was performed. The relative peak force asymmetry above 4.049% was associated with increased injury risk in men. The LL skeletal muscle mass asymmetry above 3.584% was associated with a higher injury risk in women. Increased asymmetry in indicated indices by 1% was associated with 19.8% higher injury risk in men and 82.6% in women. Asymmetry proved to be an injury risk factor. However, a more suitable index for men is relative peak force asymmetry, whereas LL skeletal muscle mass asymmetry is more suitable for women.

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Section: Discussionmentioning

confidence: 99%

Force, Power, and Morphology Asymmetries as Injury Risk Factors in Physically Active Men and Women

2022

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“…Third, we used the MRI data for the healthy side only at 12 months after surgery as the control. It has been reported that muscle volume also varies between sides in healthy individuals, 14,28,41,42,50 a situation that suggests that the value of using the healthy side as an absolute control may be limited. Fourth, it is time-consuming to manually segment the entire cross-sectional area and measure muscle volume and fatty degeneration.…”

Section: Discussionmentioning

confidence: 99%

Quantitative Assessment of Calf Muscle Volume, Strength, and Quality After Achilles Tendon Rupture Repair: A 1-Year Prospective Follow-up Study

Mashimo,

Nozaki,

Amaha

et al. 2023

Am J Sports Med

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Background: A number of studies have reported that calf muscle atrophy is a common long-term problem after Achilles tendon repair; however, there is still a lack of data concerning early postoperative morphological changes in the calf muscle after surgery. Purpose: To investigate changes over time in calf muscle volume and fatty degeneration during 1 year after Achilles tendon repair. Study Design: Cohort study; Level of evidence, 2. Methods: A prospective 1-year serial magnetic resonance imaging study was carried out with 20 patients who underwent tendon repair for unilateral acute Achilles tendon rupture. The magnetic resonance imaging assessment in addition to clinical and functional evaluations was performed at 1, 3, 6, and 12 months after surgery. The muscle volume of the medial and lateral gastrocnemius, soleus, and flexor hallucis longus (FHL) and fatty degeneration of the medial and lateral gastrocnemius and soleus were measured for the calf muscles, and the relative volume and fatty degeneration changes in the affected leg compared with the healthy contralateral leg were calculated as a percentage ([injured/healthy control] × 100) to assess structural changes over time. Results: Muscle volumes of the medial gastrocnemius, lateral gastrocnemius, soleus, and FHL were 92.3%, 92.8%, 84.6%, and 95.9% at 12 months after surgery, respectively. Medial and lateral gastrocnemius and FHL muscle volumes improved over time and recovered to almost equal to that of the healthy side at 12 months after surgery. The soleus muscle volume did not recover significantly over time and was statistically significantly smaller than that of the healthy side at 12 months ( P = .029). Fatty degeneration rates of the medial gastrocnemius, lateral gastrocnemius, and soleus were 118.2%, 113.9% and 121.1% at 12 months after surgery, respectively. Fatty degeneration of the medial and lateral gastrocnemius did not change significantly, but there was a statistically significant increase in fatty degeneration of the soleus over time ( P < .001). Conclusion: Within the triceps surae muscle, the soleus was the most negatively affected by injury and repair for both muscle volume and fatty degeneration. Postoperative management to recover the soleus muscle function before a return to sporting activities should be considered in the future.

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“…Extreme specialisation (excessive practice of specific techniques) in sports such as fencing or canoeing can induce strong preferences for one side of the body and create asymmetric balance patterns [ 17 , 18 ]. Also, in team games like hockey or handball asymmetrical positions are often assumed what could affects body posture and its stability [ 17 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Somatic characteristic, morphological asymmetry and postural stability of youth male canoeists compared to control. A cross-sectional study

Krzykała

Karpowicz

Karpowicz³

et al. 2023

PLoS ONE

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Objective To determine the relationships between selected morphological characteristics and the level of body composition asymmetry with postural stability among canoeists and a control group. Methods The sample consisted of 43 males (21 canoeists 21.8±3.29 years and 22 university students 21.7±1.32 years). Measurements included body height and weight. Segmental body composition analysis was assessed using the bioelectrical impedance by determining: fat mass (FM, kg, %), fat-free mass (FFM, kg) and predicted muscle mass (PMM, kg). Postural stability was tested using the BIODEX Balance System. Anterior–posterior stability index (APSI), medial–lateral stability index (MLSI) and overall stability index (OSI) were calculated. Results Our findings suggest that the canoeists had statistically lower level of fatty tissue compared to controls. There was a statistically important difference between groups in lower limb FM (% and kg). In both groups morphological asymmetry was observed, but in most cases—in athletes. Asymmetries between right and left arms appeared in all parameters, while asymmetries between right and left legs were noted in all parameters except FM (kg). There were relationships between stature and body weight with postural stability in canoeists. Canoeists demonstrated better balance than controls, particularly in the APSI. For all stability indices, significant differences were observed between right and left legs across all participants. Conclusions Athletes, with larger asymmetries or poorer balance, require more attention to improve performance and reduce the risk of overload injury. Future studies needed to develop sport-specific level of morphofunctional asymmetry which would be optimal for sport results and health as well.

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Effect of muscle mass asymmetric between upper and lower limbs on the postural stability and shock attenuation during landing

Cited by 6 publications

References 24 publications

Force, Power, and Morphology Asymmetries as Injury Risk Factors in Physically Active Men and Women

Force, Power, and Morphology Asymmetries as Injury Risk Factors in Physically Active Men and Women

Quantitative Assessment of Calf Muscle Volume, Strength, and Quality After Achilles Tendon Rupture Repair: A 1-Year Prospective Follow-up Study

Somatic characteristic, morphological asymmetry and postural stability of youth male canoeists compared to control. A cross-sectional study

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