Functional resistance training during walking: Mode of application differentially affects gait biomechanics and muscle activation patterns

Washabaugh, Edward P.; Augenstein, Thomas E.; Krishnan, Chandramouli

doi:10.1016/j.gaitpost.2019.10.024

Cited by 33 publications

(17 citation statements)

References 43 publications

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“…The need for balanced efforts in both physical education and sports training is indicated in papers by Washabaugh, Augenstein, and Krishnan (2020), Benzing, and Schmidt (2019), Haghighi, Mohammadtaghipoor, Hamedinia, and Harati (2019). Thus, Bogdanis, Donti, Papia, Donti, Apostolidis, and Sands (2019), Wertheimer, Antekolovic, and Matkovic (2018) note a positive effect of plyometric loads on the level of motor fitness of both children and adults.…”

Section: Introductionmentioning

confidence: 99%

Strength Abilities: Assessment of Training Effects of Strength Loads in Boys Aged 8 Years

Єрмаков

Іващенко

Худолій

et al. 2020

Teor. metod. fiz. vihov.

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The purpose of this paper is to determine the impact of strength training modes on the dynamics of training effects in 8-year-old boys. Materials and methods. The study participants were 48 boys aged 8. The experiment was performed using a 22 factorial design. The study implemented the first variant of the combined method for developing arm and shoulder muscles (station І), strength of abdominal muscles (station ІІ), strength of back muscles (station ІІІ), and strength of leg muscles (station IV). The study materials were processed using the IBM SPSS 22 statistical analysis program. Discriminant analysis was performed. The study examined the impact of four variants of strength load on the immediate training effect (ITE1) after performing exercises at four stations, the immediate training effect (ITE2) after training, and the delayed training effect (DTE) 24 hours after training. Results. The findings indicate that each of the variants of strength load can be effectively used depending on educational objectives of both one or a series of physical education lessons, and also show that the ITE and DTE of strength training depend on the initial level of fitness and the total amount of strength training in a physical education lesson. Conclusions. The findings point to the possibility of using a discriminant function to assess and predict the development of strength in 8-year-old boys. The study confirmed the effectiveness of using factorial designs to obtain objective data on the dynamics of training effects in primary school pupils.

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Section: Introductionmentioning

confidence: 99%

Strength Abilities: Assessment of Training Effects of Strength Loads in Boys Aged 8 Years

Єрмаков

Іващенко

Худолій

et al. 2020

Teor. metod. fiz. vihov.

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“…Normalization of physical loads in physical education classes is one of the factors that ensure the effectiveness of schoolchildren's physical education (Ivashchenko, Khudolii, Iermakov, Veremeenko, & Lopatiev, 2018;Veremeenko, Khudolii, & Ivashchenko, 2019;Ivashchenko, 2020). Washabaugh, Augenstein, and Krishnan (2020), Benzing, and Schmidt (2019) emphasize the use of dosed efforts in both physical education and sports training. Bogdanis, Donti, Papia, Donti, Apostolidis, and Sands (2019), Wertheimer, Antekolovic, and Matkovic (2018) note a positive effect of plyometric loads on the level of motor fitness of both children and adults.…”

Section: Introductionmentioning

confidence: 99%

Strength Abilities: Modeling of Immediate and Delayed Training Effect of Strength Loads in Boys Aged 8 Years

Худолій

Єрмаков

Іващенко

et al. 2020

Teor. metod. fiz. vihov.

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The purpose of the study was to obtain regression models of immediate and delayed training effect of strength loads in boys aged 8 years, based on a full factorial experiment. Materials and methods. The study participants were 48 boys aged 8 years. The experiment was performed using a 22 factorial design. The study materials were processed by the IBM SPSS 22 statistical analysis program. The study examined the impact of four variants of strength load on the immediate (ITE) and the delayed (DTE) training effect of orthogonal strength exercises modes and rest intervals in boys aged 8 years. Results. The study results show that in the proposed matrix of the 22 full factorial design, the chosen step of variation of factors is sufficient to study the influence of different modes of strength exercises on the dynamics of ITE in boys aged 8 years. Based on the data analysis, the study obtained regression models of load for calculating the ITE1, ITE2, and DTE. The obtained regression models make it possible to calculate the number of repetitions and rest interval to achieve the most rational load variant. Conclusions. The analysis of regression equations shows the interrelation between training effects: ITE1 —> ITE2 —> DTE. The value of ITE1, ITE2, and DTE at station I (exercises to strengthen arms and shoulders) and station II (exercises to strengthen abdominal muscles) depends on the increase in the number of repetitions in a set and the duration of the rest interval. The value of ITE1, ITE2 at station ІІІ (exercises to strengthen back muscles) depends on the increase in the number of repetitions in a set and the duration of the rest interval. The value of DTE – on the increase in the number of repetitions in a set and the reduction of the rest interval duration. The value of ITE1 at station IV (exercises to strengthen leg muscles) depends on the increase in the number of repetitions in a set and the reduction of the rest interval duration. To strengthen the DTE, it is necessary to reduce the number of repetitions in a set and the duration of the rest interval.

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“…support for compensating limb mass and inertia, whereas k i > 1 indicates we are adding (k i − 1) • 100% virtual limb mass and inertia in closed loop. We chose k i ≥ 1 to virtually challenge the subject, as evidence in [39] suggests that adding functional resistance to a subject's lower limbs can account for specific strength deficits during walking. As forÑ , we chose µ = 1.15 for negative BWS (g > g) and µ = 0.85 for positive BWS (g < g).…”

Section: ) Notation For Shaping Strategiesmentioning

confidence: 99%

Trajectory-Free Control of Lower-Limb Exoskeletons Through Underactuated Total Energy Shaping

Lin

Gregg

2021

IEEE Access

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Kinematic control approaches for exoskeletons replicate normative joint kinematics associated with one specific task and user at a time, which makes it difficult to adjust to continuously-varying activities during gait training. These approaches also overly constrain individuals who have partial or full volitional control of their limbs, preventing these individuals from choosing their own preferred gait patterns. To address these issues, we proposed a matching framework for underactuated total energy shaping (i.e., shaping both the potential and kinetic energies) with human and environmental interaction to provide taskinvariant, energetic assistance. In our prior work, we designed assistive strategies to compensate for lowerlimb inertia in the actuated part of the mass matrix while leaving mass related terms unshaped. While these strategies have demonstrated potentia l gait benefits, shaping mass related terms in addition to lower-limb inertia can produce greater benefits as they are more dominant in determining human dynamics during locomotion. Moreover, previous definitions of closed-loop mass matrix with reduced inertial parameters cannot guarantee its positive definiteness. Having a non-positive definite mass matrix in the closed loop can render chaotic behaviors such as unbounded exoskeleton torques that are dangerous to human users. In this paper, we generalize our prior work to shape all inertial terms in the actuated part of the mass matrix while ensuring its positive definiteness in the closed loop. In addition, given a positive-definite, closed-loop mass matrix, we prove passivity from human input to joint velocity and highlight two Lyapunov stability results based on common assumptions of human joint control policies. We then show beneficial effects of the proposed assistive strategies such as reduced metabolic cost in simulations of a human-like model. We also show that the corresponding assistive torques closely match the human torques of an able-bodied subject.

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Functional resistance training during walking: Mode of application differentially affects gait biomechanics and muscle activation patterns

Cited by 33 publications

References 43 publications

Strength Abilities: Assessment of Training Effects of Strength Loads in Boys Aged 8 Years

Strength Abilities: Assessment of Training Effects of Strength Loads in Boys Aged 8 Years

Strength Abilities: Modeling of Immediate and Delayed Training Effect of Strength Loads in Boys Aged 8 Years

Trajectory-Free Control of Lower-Limb Exoskeletons Through Underactuated Total Energy Shaping

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