Free weights, machine weights, elastic tubing, and medi-cine balls are just a few of the modalities personal trainers can use to improve the muscular strength and endurance of their clients. Often, the type of modality used is deter-mined by the training environment, availability of equip-ment, and population. Access to a fi tness facility, amount of equipment, population and size of the training group, current fi tness level of the individual or group, and budget restraints are just a few variables to consider when design-ing a training program. Along with the training modalities previously mentioned, manual resistance is another type of training that can be incorporated into a fi tness program to improve muscular strength and endurance.  [Read the full article]