Influence of Different Load Conditions on Lower Extremity Biomechanics during the Lunge Squat in Novice Men

Gao, Lidong; Lu, Zhenghui; Liang, Minjun; Baker, Julien S.; Gu, Yaodong

doi:10.3390/bioengineering9070272

Cited by 13 publications

(19 citation statements)

References 42 publications

(74 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result of this study, the characteristics of plantar pressure profiles and the footprints of elite badminton players can be used in the development and design of badminton boots or related sports orthotic insoles, which are expected to cushion the uneven distribution of plantar loads, improve shoe comfortability, and reduce the risk of sports-related injuries suffered by badminton players. With respect to the imbalance of centers of gravity in elite badminton players, the lunge squat exercises have been considered to be effective rehabilitation training for improving static and dynamic joint balance [ 62 ].…”

Section: Resultsmentioning

confidence: 99%

Bipedal Static Supination and Dynamic Forefoot Loading Characteristics in Taiwanese College Badminton Players: A Cross-Sectional Study

et al. 2023

View full text Add to dashboard Cite

Context: Badminton is a unilateral sport that involves repetitive jumping, lunging and quick changes of direction with the lower limb, thus, plantar pressure profiles and foot postural profiles are critical to maintaining balance and coordination. Objective: The purpose of this study was to explore the characteristics of static and dynamic plantar pressure profiles with rearfoot posture in elite and recreational badminton players as well as assess the transitional changes of plantar loads between static and dynamic states. Methods: A cross-sectional survey was conducted among 65 college-level elite male badminton players (mean age: 20.2 ± 1.2 years; mean height: 177.4 ± 4.6 cm; mean weight: 72.6 ± 4.6 kg) and 68 recreational badminton players of the same gender (mean age: 19.9 ± 0.8 years; mean height: 170.3 ± 3.9 cm; mean weight: 67.7 ± 3.2 kg). The JC Mat was used to evaluate the arch index (AI), plantar pressure distribution (PPD), centers of gravity, and the characteristics of the footprint. Static foot posture was determined by examining the rearfoot alignment. Results: Both groups’ AI fell within the normal range. The static plantar loads of the elite group were distributed at the bipedal lateral part of longitudinal arches and heels (p < 0.01), while the right foot experienced higher centers of gravity (p < 0.05). The elite group’s static rearfoot postural alignment exhibited a higher degree of rearfoot varus than the recreational group (p < 0.05). In addition, the elite group’s dynamic plantar loads were mainly exerted at the medial and lateral metatarsals of both feet (p < 0.05). During the transition state, the recreational group’s plantar loads were mainly shifted to the bipedal lateral part of metatarsals and heels (p < 0.05), whereas the elite group’s bipedal lateral longitudinal arches as well as the medial and lateral heels experienced a reduction in plantar loads (p < 0.01). Conclusion: For elite badminton players, the findings revealed a possible connection among the static supinated foot, centers of gravity tending towards the right foot, and increased forefoot plantar loads in the dynamic state. The finding merits further exploration of the possible links between transitional changes in plantar pressure distribution in both states and related foot injuries resulting from intense competition and regular training in badminton.

show abstract

Section: Resultsmentioning

confidence: 99%

Bipedal Static Supination and Dynamic Forefoot Loading Characteristics in Taiwanese College Badminton Players: A Cross-Sectional Study

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The lunge can be a helpful exercise for rehabilitating subjects with low back pain. Dumbbells seem suitable for beginners performing the lunge exercise due to the low joint impact and increased stability [ 12 ]. In addition, the muscle activity generated in our study was between 6.9 and 37.2% MVIC.…”

Section: Discussionmentioning

confidence: 99%

“…One of the exercises in which weight distribution can be modified with dumbbells is the lunge [ 11 , 12 ]. The lunge is a unilateral multi-joint leg exercise that involves knee and hip extensor muscles.…”

Section: Introductionmentioning

confidence: 99%

Effect of Load Distribution on Trunk Muscle Activity with Lunge Exercises in Amateur Athletes: Cross-Sectional Study

et al. 2023

View full text Add to dashboard Cite

Background: The effect of load distribution applied to the trunk musculature with lunge exercises has yet to be determined. The aim of this study was to evaluate the effect of load placement using dumbbells on the activation of the latissimus dorsi, erector spinae, external oblique, and rectus abdominis muscles during the lunge. Methods: Forty-two amateur athletes (21 men and 21 women) were recruited. Three lunge exercises were performed with different loading arrangements (ipsilateral, contralateral, and bilateral). The principal variable recorded for muscle activity was mean “root mean square” expressed as the percentage of the maximal voluntary isometric contraction. Results: There are statistically significant differences in the erector spinae (p < 0.001; p < 0.003) and external oblique muscles (p < 0.009; p < 0.001) compared with the contralateral side. The muscle on the opposite side of the load achieved higher activation for these muscles. The erector spinae and latissimus dorsi muscle did not reach a statistically significant difference with the contralateral side in any exercise (p > 0.05). The higher activation of the latissimus dorsi occurred on the same side on which the load was placed. Conclusions: There was higher activation of the erector spinae, external oblique, and rectus abdominis muscles contralateral to the side of load placement during lunge exercise by amateur athletes.

show abstract

“…The model is scaled to meet anthropometry characteristics so that the root mean square error between the marked experimental point and the virtual marked point is less than 0.02 m, and the maximum error is less than 0.04 m ( Lu et al, 2022b ; Lu et al, 2022c ; Gao et al, 2022 ). The inverse kinematics algorithm calculates the joint angle, and the residual reduction algorithm reduces the kinetics inconsistency between kinematics and ground reaction force.…”

Section: Methodsmentioning

confidence: 99%

Effect of pregnancy on female gait characteristics: a pilot study based on portable gait analyzer and induced acceleration analysis

Cen

et al. 2023

Front. Physiol.

Self Cite

View full text Add to dashboard Cite

Introduction: The changes in physical shape and center of mass during pregnancy may increase the risk of falls. However, there were few studies on the effects of maternal muscles on gait characteristics and no studies have attempted to investigate changes in induced acceleration during pregnancy. Further research in this area may help to reveal the causes of gait changes in women during pregnancy and provide ideas for the design of footwear and clothing for pregnant women. The purpose of this study is to compare gait characteristics and induced accelerations between non-pregnant and pregnant women using OpenSim musculoskeletal modeling techniques, and to analyze their impact on pregnancy gait.Methods: Forty healthy participants participated in this study, including 20 healthy non-pregnant and 20 pregnant women (32.25 ± 5.36 weeks). The portable gait analyzer was used to collect participants’ conventional gait parameters. The adjusted OpenSim personalized musculoskeletal model analyzed the participants’ kinematics, kinetics, and induced acceleration. Independent sample T-test and one-dimensional parameter statistical mapping analysis were used to compare the differences in gait characteristics between pregnant and non-pregnant women.Results: Compared to the control group, pregnancy had a 0.34 m reduction in mean walking speed (p < 0.01), a decrease in mean stride length of 0.19 m (p < 0.01), a decrease in mean stride frequency of 19.06 step/min (p < 0.01), a decrease in mean thigh acceleration of 0.14 m/s2 (p < 0.01), a decrease in mean swing work of 0.23 g (p < 0.01), and a decrease in mean leg falling strength of 0.84 g (p < 0.01). Induced acceleration analysis showed that pregnancy muscle-induced acceleration decreased in late pregnancy (p < 0.01), and the contribution of the gastrocnemius muscle to the hip and joint increased (p < 0.01).Discussion: Compared with non-pregnant women, the gait characteristics, movement amplitude, and joint moment of pregnant women changed significantly. This study observed for the first time that the pregnant women relied more on gluteus than quadriceps to extend their knee joints during walking compared with the control group. This change may be due to an adaptive change in body shape and mass during pregnancy.

show abstract

Influence of Different Load Conditions on Lower Extremity Biomechanics during the Lunge Squat in Novice Men

Cited by 13 publications

References 42 publications

Bipedal Static Supination and Dynamic Forefoot Loading Characteristics in Taiwanese College Badminton Players: A Cross-Sectional Study

Bipedal Static Supination and Dynamic Forefoot Loading Characteristics in Taiwanese College Badminton Players: A Cross-Sectional Study

Effect of Load Distribution on Trunk Muscle Activity with Lunge Exercises in Amateur Athletes: Cross-Sectional Study

Effect of pregnancy on female gait characteristics: a pilot study based on portable gait analyzer and induced acceleration analysis

Contact Info

Product

Resources

About