ECG screening for SCD in young adults: community volunteers can acquire higher quality ECGs than health professionals.

Background And Purpose: ECG screening of young athletes for risk of sudden cardiac death has grown in popularity throughout the world. The purpose of this study is to assess the technical error rate of ECGs acquired by appropriately trained community volunteers compared to that reported in the literature utilizing trained medical personnel.

Methods: This is a retrospective study analyzing consecutive ECGs acquired during 5 successive high school screenings at 3 separate schools in 2011.

Acute effects of static stretching on characteristics of the isokinetic angle - torque relationship, surface electromyography, and mechanomyography.

The aims of this study were to examine the acute effects of static stretching on peak torque, work, the joint angle at peak torque, acceleration time, isokinetic range of motion, mechanomyographic amplitude, and electromyographic amplitude of the rectus femoris during maximal concentric isokinetic leg extensions at 1.04 and 5.23 rad x s(-1) in men and women.

Acute effects of static stretching on peak torque and mean power output in National Collegiate Athletic Association Division I women's basketball players.

The purpose of this study was to examine the acute effects of static stretching on peak torque (PT) and mean power output (MP) during maximal, voluntary concentric isokinetic leg extensions at 60 and 300 degrees .s(-1) in National Collegiate Athletic Association Division I Women's Basketball players. Eleven members of a women's basketball team volunteered to perform maximal concentric isokinetic leg extensions at 60 and 300 degrees .

Surface electromyographic amplitude-to-work ratios during isokinetic and isotonic muscle actions.

Context: Isokinetic and isotonic resistance training exercises are commonly used to increase strength during musculoskeletal rehabilitation programs. Our study was designed to examine the efficacy of isokinetic and isotonic muscle actions using surface electromyographic (EMG) amplitude-to-work ratios (EMG/WK) and to extend previous findings to include a range of isokinetic velocities and isotonic loads.

Objective: To examine work (WK), surface EMG amplitude, and EMG/WK during concentric-only maximal isokinetic muscle actions at 60, 120, 180, 240, and 300 degrees /s and isotonic muscle actions at 10%, 20%, 30%, 40%, and 50% of the maximal voluntary isometric contraction (MVIC) torque during leg extension exercises.

Acute Effects of Static and Proprioceptive Neuromuscular Facilitation Stretching on Muscle Strength and Power Output.

Context: Stretching is commonly used as a technique for injury prevention in the clinical setting. Our findings may improve the understanding of the neuromuscular responses to stretching and help clinicians make decisions for rehabilitation progression and return to play.Objective: To examine the short-term effects of static and proprioceptive neuromuscular facilitation stretching on peak torque (PT), mean power output (MP), active range of motion (AROM), passive range of motion (PROM), electromyographic (EMG) amplitude, and mechanomyographic (MMG) amplitude of the vastus lateralis and rectus femoris muscles during voluntary maximal concentric isokinetic leg extensions at 60 and 300 degrees .

Detoxification of the polyamine analogue N1-ethyl-N11-[(cycloheptyl)methy]-4,8-diazaundecane (CHENSpm) by polyamine oxidase.

Purpose: Analogues of the naturally occurring polyamines, alkylated on both terminal amines, are being developed as anticancer drugs. Because bisalkylated derivatives of putrescine (1,4-diaminobutane) are potent inhibitors of the flavin adenine dinucleotide-dependent polyamine oxidase (PAO), we asked whether PAO could detoxify synthetic bisalkylated polyamines with chain lengths longer than putrescine.

Experimental Design: We investigated the effects of one polyamine analogue in Chinese hamster ovary (CHO) and HCT116 human colon tumor-derived cells, which express dramatically different levels of PAO activity, and in these same cells treated with an inhibitor of PAO.