Abstract Study aim : This study aimed to determine and compare the ‘optimum power load’ in hexagonal (HBDL) straight (SBDL) bar deadlift exercises. Material methods Fifteen novice strength-trained males performed three repetitions of HBDL SBDL at loads from 20–90% their one-repetition maximum (1RM). Peak power, average peak velocity, velocity were determined each repetition using a velocity-bas...

the purpose of present study was to examine the effects of caffeine and ephedrine supplement and their combination on maximal strength and mucular endurance in male bodybuilders. 12 male bodybuilders (mean age: 24.41±4.42 years, height: 174.83±3.61 cm and weight: 75.67±8.05 kg) were selected voluntarily. the study design was crossover, in which the subjects were placed in 7 different conditions...

The purpose of this study was to compare 1 repetition maximum (1RM) strength, maximum power (MP), linear momentum (Mp), and the loads of 1RM responsible for maximum power (MP%) and for linear momentum (Mp%) generated in explosive concentric bench press (CBP) motion among athletes from different sports. A total of 56 athletes (13 sprinters, 16 basketball players, 16 handball players, 5 volleybal...

BACKGROUND In terms of motivation and long-term adherence, low-resistance exercise might be more suitable for older adults than high-resistance exercise. However, more data are needed to support this claim. OBJECTIVE The objective was to investigate the effect of low- and high-resistance exercise protocols on long-term adherence and motivation. METHODS This study was designed as an explorat...

The aim of this study was to investigate the heart rate variability (HRV) after resistance training with and without vascular occlusion. It was hypothesized that low intensity (LI) with vascular occlusion (LIO) would elicit comparable postexercise HRV responses with that of high intensity (HI) without vascular occlusion. Nine subjects undertook 4 experimental sessions of leg press exercise on d...

The purpose of this study was to assess changes in upper-body muscular strength and work capacity following off-season resistance training and the resultant effect on prediction of muscular strength (1 repetition maximum, or 1RM). National Collegiate Athletic Association (NCAA) Division II football players (n = 58) were divided into low-strength (LS, 1RM <275 lb, n = 23) and high-strength (HS, ...

background ghrelin and obestatin are orexigenic and anorexigenic peptides, respectively. it appears that an accurate balance between theses peptides is important for regulating energy homeostasis and body weight. objectives the aim of this study was to identify the possible mechanisms by which circuit resistance training influences energy homeostasis and weight control. patients and methods twe...

A single bout of high-intensity resistance exercise is capable of activating the expression of various genes in skeletal muscle involved in hypertrophy such as myosin heavy chain (MHC) isoforms, myogenic regulatory factors (MRFs), and growth factors. However, the specific role exercise intensity plays on the expression of these genes is not well defined. The purpose of this study was to investi...

OBJECTIVES This investigation examined the effect of 6 months of high- or low-intensity resistance exercise on muscular strength and endurance and stair climbing ability in adults aged 60 to 83. DESIGN A randomized controlled trial. SETTING University of Florida Center for Exercise Science. PARTICIPANTS Sixty-two men and women completed the study protocol. Subjects were matched for streng...