[Purpose] The effects of core training using slings and Togus on the improvement of posture control in Taekwondo club students, that is, balance ability, were investigated. To that end, changes in the Taekwondo players' balance ability resulting from active core training for eight weeks were examined through fitness and foot pressure. [Subjects] The present study was conducted with 13 male Taek...

BACKGROUND Chronic obstructive pulmonary disease (COPD) has significant systemic effects that substantially impact quality of life and survival. The purpose of this study was to assess and compare peripheral muscle strength and endurance, exercise capacity, fatigue perception and quality of life between patients with COPD and healthy subjects. METHODS Twenty COPD patients (mean FEV1 49.3 ± 19...

OBJECTIVE The primary purpose of this study was to compare the effects of explosive versus slow contractions on the rate of energy expenditure during and after resistance exercise. METHODS Nine men (20 +/- 2.5 yr) performed three exercise protocols using a plate-loaded squat machine, and a no-exercise (CONTROL) session in a randomly assigned, counterbalanced order. Subjects performed squats u...

Randell, AD, Cronin, JB, Keogh, JWL, Gill, ND, and Pedersen, MC. Reliability of performance velocity for jump squats under feedback and nonfeedback conditions. J Strength Cond Res 25(X): 000–000, 2011—Advancements in the monitoring of kinematic and kinetic variables during resistance training have resulted in the ability to continuously monitor performance and provide feedback during training. ...

2 ABSTRACT The purpose of this study was to compare muscle activation in eight superficial lower limb muscles during execution of barbell back squats while in barefoot and athletic shoe conditions. It was hypothesized that greater muscle activity would be seen when squats were performed in barefoot conditions. Six participants were included in the study (means: 21.33±1.53 years, 170.45±11.33cm ...

BACKGROUND The single-leg squat on a 25 degrees decline board has been described as a clinical assessment tool and as a rehabilitation exercise for patients with patellar tendinopathy. Several assumptions have been made about its working mechanism on patellar load and patellofemoral forces, but these are not substantiated by biomechanical evaluations. AIM To investigate knee moment and patell...

The purpose of the present study was to investigate the effect of maximal strength training on cycling economy (CE) at 70% of maximal oxygen consumption (Vo2max), work efficiency in cycling at 70% Vo2max, and time to exhaustion at maximal aerobic power. Responses in 1 repetition maximum (1RM) and rate of force development (RFD) in half-squats, Vo2max, CE, work efficiency, and time to exhaustion...

[Purpose] The purpose of this study was to evaluate the immediate effect exercise therapy using SPIDER on balance ability patients with Parkinson’s disease (PD). [Participants and Methods] Ten PD underwent without SPIDER, effects were compared. Effectiveness measured by Timed up Go Test (TUG), Functional Reach (FRT), 10-meter walk test. task consisted 10 squats back-and-forth steps each. [Resul...

The purpose of this study was to compare the acute effect of box squats with barbell (BBSquat), box squats with elastic resistance bands (BandSquat), and static stretches (SStretch) on external power during a 20-kg weighted jump squat. Twelve male athletes performed each of the 3 warm-up protocols on separate occasions in a randomized order. Weighted jump squat power was assessed using a linear...

PURPOSE To determine whether ballistic power training and strength training result in specific changes in stretch-shorten cycle (SSC) function during the eccentric (ECC) phase and, if so, whether these changes are influenced by the individual's strength level. METHODS Thirty-two male subjects were divided into four groups: stronger power training group (SP, n = 8, squat one-repetition maximum...