Effects of Skill Level and Feet Width on Kinematic and Kinetic Variables during Jump Rope Single Under

Jang, Kyeong Hui; Son, Min Ji; Kim, Dae Young; Lee, Myeoung Gon; Kim, You Kyung; Kim, Jin Hee; Youm, Changhong

doi:10.5103/kjsb.2017.27.2.99

Cited by 7 publications

(7 citation statements)

References 24 publications

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“…Kinetic parameters across all joints tended to be greater during triple unders when compared to double unders (Table 2, Figure 3 A limitation of the present study is the large range of ages, statures, and skill levels (speed scores and competitive experience) present in the participant group tested. It is possible that technique differences may exist between athletes of different ages or skill levels (Jang et al, 2017;Kim et al, 2017). While the sprint speeds observed in this study (4.9 Hz) are representative of typical scores for this age group at the provincial level in Alberta, greater speeds (7.5 Hz) have been observed at the international level (International Jump Rope Union, n.d.).…”

Section: Discussionmentioning

confidence: 54%

“…Previous jump rope studies have reported ground reaction force (GRF) Kim et al, 2017;Pittenger et al, 2002;Shek et al, 2005), plantar pressure (Shek et al, 2005), and joint angle (Jang et al, 2017;Kim et al, 2017) parameters. Most of the studies quantified external loading parameters or kinematics for one-or two-legged single unders (one revolution of the rope per jump) or double unders (two revolutions per jump; see Online Supplementary video 1).…”

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confidence: 99%

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Lower-limb joint kinetics in jump rope skills performed by competitive athletes

Bruce

Ramsay

Kennedy

et al. 2020

Sports Biomechanics

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The purpose of this study was to characterise lower-limb joint kinetics during consecutive double unders and speed step sprints performed by competitive jump rope athletes, and to compare these measurements to running. Sixteen adolescent competitive jump rope athletes performed consecutive double under, speed step, and running trials while motion capture and ground reaction force data were collected. Lower limb joint moments, power, and work were calculated using an inverse dynamics approach and discrete measurements were compared between skills. Peak ground reaction forces were similar between movements; however, knee and hip joint kinetics were distributed differently between double unders and speed step. In general, double unders were characterised by an increased reliance on knee joint kinetics, while speed step was characterised by an increased reliance on hip joint kinetics. Peak ankle moments were 9-20% greater in speed step when compared to double unders and running (p ≤ 0.050), and peak negative ankle power was 39-114% greater in double unders and speed step when compared to running (p ≤ 0.002). These findings may have important implications for injury risk and load management in jump rope athletes or other individuals that incorporate jump rope into their training programs.

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Section: Discussionmentioning

confidence: 54%

mentioning

confidence: 99%

Lower-limb joint kinetics in jump rope skills performed by competitive athletes

Bruce

Ramsay

Kennedy

et al. 2020

Sports Biomechanics

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“…However, there were no significant differences in the duration of the landing phase and the center of mass displacement. Previous studies found that the performance of skipping rope is influenced by various factors such as the ground contact time, flight time, center of mass displacement, and joint angles [35,36]. Jump rope athletes aim to complete as many jumps as possible within 30 s, and thus, the recommended strategy that controls the joint angle of the lower extremities during competition is to minimize the duration of the flight and landing phases in order to increase the number of jumps [35,36].…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies found that the performance of skipping rope is influenced by various factors such as the ground contact time, flight time, center of mass displacement, and joint angles [35,36]. Jump rope athletes aim to complete as many jumps as possible within 30 s, and thus, the recommended strategy that controls the joint angle of the lower extremities during competition is to minimize the duration of the flight and landing phases in order to increase the number of jumps [35,36]. Although, in this study, it was observed that the ground contact time and center of mass displacement showed no significant differences under both conditions, significant differences were observed in the ankle and MTP joint angles and the power.…”

Section: Discussionmentioning

confidence: 99%

Effects of Barefoot and Shod Conditions on the Kinematics and Kinetics of the Lower Extremities in Alternating Jump Rope Skipping—A One-Dimensional Statistical Parameter Mapping Study

Li,

Wu,

et al. 2023

Bioengineering

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Purpose: To explore the difference in the biomechanics of the lower extremity during alternating jump rope skipping (AJRS) under barefoot and shod conditions. Methods: Fourteen experienced AJRS participants were randomly assigned to wear jump rope shoes or be barefoot (BF) during the AJRS at a self-selected speed. The Qualisys motion capture system and Kistler force platform were used to synchronously collect the ground reaction forces and trajectory data of the hip, knee, ankle, and metatarsophalangeal (MTP) joints. One-dimensional statistical parameter mapping was used to analyze the kinematics and kinetics of the lower extremity under both conditions using paired t-tests. Results: Wearing shoes resulted in a significant decrease in the ROM (p < 0.001) and peak angular velocity (p < 0.001) of the MTP joint during the landing phase. In addition, the MTP joint power (p < 0.001) was significantly larger under shod condition at 92–100% of the landing phase. Moreover, wearing shoes reduced the peak loading rate (p = 0.002). Conclusion: The findings suggest that wearing shoes during AJRS could provide better propulsion during push-off by increasing the MTP plantarflexion joint power. In addition, our results emphasize the significance of the ankle and MTP joint by controlling the ankle and MTP joint angle.

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“…Subsequently, the jump rope test was conducted (Figure 2 displays the test setup). To avoid learning or fatigue effects in participants during the test, they were randomly assigned to perform the test barefoot or in sports shoes with Shore hardness testes of either 60, 55, 50, or 45 Shore C. The participants performed 2.2 Hz jump rope (single-under) [25] exercises for 30 s to ensure uniform jumping during tests with both feet on the force platform [26]; the speed of the jump rope was controlled by a metronome with BPM 130. Five trials of each jump rope exercise were carried out for each participant, and participants rested for 1 min between trials.…”

Section: Methodsmentioning

confidence: 99%

Effects of Shoe Midsole Hardness on Lower Extremity Biomechanics during Jump Rope in Healthy Males

Tai

et al. 2021

Healthcare

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This study investigated differences in lower extremity muscle activations and vertical stiffness during a 2.2 Hz jump rope exercise with different midsole hardnesses (45, 50, 55, and 60 Shores C). Twelve healthy male participants wore customized shoes with different hardness midsoles and performed jump rope exercises in a random order. A nine-camera motion analysis system (150 Hz), a force platform (1500 Hz), and a wireless electromyography (EMG) system (Noraxon, 1500 Hz) were used to measure the biomechanical parameters during the jump rope exercise. The biceps femoris %MVC of barefoot participants was significantly greater than that of those wearing the 45 Shores C (p = 0.048) and 55 Shores C (p = 0.009) midsole 100 ms before landing. The vastus medialis %MVC of barefoot participants was significantly greater than that of those wearing the 55 C midsole (p = 0.005). Nonsignificant differences in vertical stiffness were found between midsole hardnesses and barefoot. Lower extremity muscle activation differed between conditions. The results of this study indicate that for repetitive activities that entail multiple impacts, sports shoes with a low midsole hardness (e.g., 50 Shores C or 45 Shores C) may be appropriate. It is important to provide customers with information regarding midsole hardness in shoe product labeling so that they properly consider the function of the shoes.

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Effects of Skill Level and Feet Width on Kinematic and Kinetic Variables during Jump Rope Single Under

Cited by 7 publications

References 24 publications

Lower-limb joint kinetics in jump rope skills performed by competitive athletes

Lower-limb joint kinetics in jump rope skills performed by competitive athletes

Effects of Barefoot and Shod Conditions on the Kinematics and Kinetics of the Lower Extremities in Alternating Jump Rope Skipping—A One-Dimensional Statistical Parameter Mapping Study

Effects of Shoe Midsole Hardness on Lower Extremity Biomechanics during Jump Rope in Healthy Males

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