Recent research has developed new ways of approaching macronutrient ratios that challenge the conventional way of thinking. This article takes a look at what is usually recommended for athletes, as well as different lower carbohydrate variations.

This article will explain the interference effect and provide a rationale for why low-intensity steady-state (LISS) cardiovascular training may be a useful tool for those interested in improving their body composition.

This article briefly explores some current research that has important implications for improving the readiness and lethality of military personnel.

Brad Schoenfeld, MS, CSCS, CSPS, NSCA-CPT, spoke at the NSCA's 2012 National Conference on optimizing the fat-burning effects of metabolic resistance training.

This article discusses the importance of upper body power training for protective security personnel and its potential for an occupational performance marker.

This Kinetic Select from NSCA’s Essentials of Personal Training, Second Edition gives a brief overview of respiratory adaptations, and how aerobic interventions of duration and intensity can be used for specific adaptations for endurance training.

The 3-minute all-out exercise test (3MT) was developed over a decade ago and enables the estimation of time for onset of momentary fatigue for a given speed or power output exceeding critical speed (CS) or critical power (CP), respectively. The 3MT has been validated for conducting high-intensity interval training, used with load carriage prediction and prescription, and validated for shuttle running. These prescriptions are novel because they allow for standardizing exercise intensities relative to metabolic parameters as opposed to a percentage of a given maximum or reserve. Research was identified using leading search engines (e.g., PubMed, Google Scholar, and Research Gate) and citations to similar articles. The objective of this review article was to summarize research that emerged on the CS/CP concept with emphasis on applications since the advent of the 3MT. The review concludes with application of the CS/CP concept to the frequency, intensity, time, and type of exercise for exercise prescription.

Training Techniques for Optimal Muscle Gain and Fat Loss

In this session from the 2015 Personal Trainers Conference, dietitian Dawn Weatherwax explains how the health of the digestive system affects overall health. Learn how gastrointestinal health impacts fat loss and muscle gain, the signs and symptoms of poor gut health, and foods and supplements that have been shown to have a positive impact on gut integrity.

This excerpt from NSCA's Guide to Tests and Assessments briefly discusses the method behind a lactate threshold test and the pretest considerations one might take prior to this test.