Shod versus barefoot effects on force and power development during a conventional deadlift.

08:00 EDT 7th October 2017 | BioPortfolio

Summary of "Shod versus barefoot effects on force and power development during a conventional deadlift."

The kinetics of a conventional deadlift in shod (S) versus unshod (US) footwear conditions in 10 male participants (mean ± SD, age = 27.0 ± 5.8 years; weight = 78.7 ± 11.5 kg; height = 175.8 ± 8.2 cm; 1RM deadlift = 155.8 ± 25.8 kg) was assessed in two testing sessions. A counterbalanced, crossover experimental design was used with different loads (60% and 80% 1RM). Four sets of four repetitions were prescribed per session with two sets per shoe and with each shoe condition involving one set per load. Peak vertical force (PF), rate of force development (RFD), time to peak force (TPF), anterior-posterior (COP-AP) and medio-lateral (COP-ML) center of pressure excursion, and barbell peak power (PP) data were recorded during all repetitions. Except for RFD (F = 6.389; p = 0.045; ηp = 0.516) and ML-COP (F = 6.696; p = 0.041; ηp = 0.527), there were no other significant main effects of shoe. There were significant main effects of load for PF (p < 0.05), COP-AP (p = 0.011), TPF (p = 0.018) and COP-AP (p = 0.011). There were no significant interactions found between session, shoe and load (p range from 0.944 to 0.086). While the unshod condition may have produced changes in RFD and ML-COP compared with the shod condition, there is only limited evidence in the current study to support this lifting technique for the conventional deadlift. Further investigation is required to clarify any possible implications of this result and its benefit to lifters.


Journal Details

This article was published in the following journal.

Name: Journal of strength and conditioning research
ISSN: 1533-4287


DeepDyve research library

PubMed Articles [27732 Associated PubMed Articles listed on BioPortfolio]

Biomechanical analysis of gait waveform data: exploring differences between shod and barefoot running in habitually shod runners.

The aim of this study was to utilise one-dimensional statistical parametric mapping to compare differences between biomechanical and electromyographical waveforms in runners when running in barefoot o...

Habitual Minimalist Shod Running Biomechanics and the Acute Response to Running Barefoot.

The aim of the study was to determine whether habitual minimalist shoe runners present with purported favorable running biomechanithat reduce running injury risk such as initial loading rate. Eighteen...

Optimisation of a machine learning algorithm in human locomotion using principal component and discriminant function analyses.

Assessment methods in human locomotion often involve the description of normalised graphical profiles and/or the extraction of discrete variables. Whilst useful, these approaches may not represent the...

Acute Effects of Ammonia Inhalants on Strength and Power Performance in Trained Men.

The aim of the present study was to investigate the influence of ammonia inhalants on lower body power and maximal isometric strength in trained men. Twenty experienced resistance trained men (age = 2...

Acute fatigue negatively affects risk factors for injury in trained but not well-trained habitually shod runners when running barefoot.

Many factors may contribute to running-related injury. These include fatigue and footwear, the combination of which has rarely been studied, in particular with reference to barefoot running, recently ...

Clinical Trials [6480 Associated Clinical Trials listed on BioPortfolio]

16 Weeks of Progressive Barefoot Running Training Changes Impact Force and Muscle Activation in Habitual Shod Runners

The purpose of this study was to evaluate the influence of 16 weeks of progressive barefoot running training on impact force and muscle activation in habitual shod runners. Habitual shod r...

Effects of Epicatechin-rich Cocoa on Collagen Synthesis

This study will investigate the effects of dietary supplementation of epicatechin-rich cocoa in humans on collagen synthesis and power-based performance outcomes (rate of force development...

The Different Running Speeds of Strike Patterns

The purpose of this research is to investigate the differences of landing patterns while running in different speed with barefoot and wearing shoe.

Effects of Power Mobility on Young Children With Severe Motor Impairments

The purpose this study is to determine the effects of power mobility on the development and function of young children of young children whose severe physical disabilities limit their expl...

Effects of Power-velocity Muscle Characteristics During Ageing

The purpose of this project is to investigate the age-related differences in force-velocity muscle characteristics during isolated knee extensions variable in speed and load, during cyclic...

Medical and Biotech [MESH] Definitions

Compounds that interact with ANDROGEN RECEPTORS in target tissues to bring about the effects similar to those of TESTOSTERONE. Depending on the target tissues, androgenic effects can be on SEX DIFFERENTIATION; male reproductive organs, SPERMATOGENESIS; secondary male SEX CHARACTERISTICS; LIBIDO; development of muscle mass, strength, and power.

Treatment using irradiation with light of low power intensity so that the effects are a response to the light and not due to heat. A variety of light sources, especially low-power lasers are used.

The apparent deflection (Coriolis acceleration) of a body in motion with respect to the earth, as seen by an observer on the earth, attributed to a fictitious force (Coriolis force) but actually caused by the rotation of the earth. In a medical context it refers to the physiological effects (nausea, vertigo, dizziness, etc.) felt by a person moving radially in a rotating system, as a rotating space station. (From Random House Unabridged Dictionary, 2d ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

The rotational force about an axis that is equal to the product of a force times the distance from the axis where the force is applied.

Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)

Quick Search


DeepDyve research library

Searches Linking to this Article