The physiological response to breath holding includes bradycardia and peripheral vasoconstriction, which contrasts with that of exercise which includes tachycardia and peripheral vasodilation. This raises the question as to what the physiological response is to breath holding during exercise. During low-intensity exercise, the breath holding response of bradycardia and peripheral vasoconstriction prevails over the exercise response of tachycardia and peripheral vasodilation, but nevertheless the exercise may be sustained. Due to the lack of availability of extrinsic oxygen (O 2 ) from the atmosphere during breath holding, the energy demands can be met by increased reliance on intrinsic O 2 stores (i.e., O 2 that was in the body before the breath hold) via increased O 2 extraction at the muscle compared with exercise while breathing, or increased contributions from anaerobic energy systems. During high intensity exercise of short duration, the exercise response may prevail over the breath holding response due to the increased parasympathetic withdrawal and sympathetic drive of higher intensity exercise. If breath holding during high-intensity exercise was sustained for long enough, the breath holding response may eventually overcome the exercise response, although this may be difficult due to the inverse relationship between exercise intensity and breath hold duration.

In this special Season 4 podcast kick-off, NSCA’s Tactical Program Manager, Nate Palin, introduces the new NSCA Coaching Program Manager, Eric McMahon. McMahon discusses how he got into strength and conditioning, transitioning into new roles and the challenges it brings, and the direction that he wants to bring the NSCA with this new position as a bridge between strength coaches and the organization. Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs | Find Nate on Instagram: @natepalin

Meet Tara De Leon, a former collegiate strength and conditioning coach who now works as a personal trainer in Edgewater, MD. De Leon shares insight with NSCA Coaching and Sport Science Program Manager, Eric McMahon, and episode co-host, NSCA Personal Training Program Manager, Blake Brightwell, on alternate routes for strength and conditioning coaches through personal training, group fitness, and private sector coaching. This episode discusses the “coaching identity” as it exists and impacts coaches’ beliefs across various stages of professional development. With the growth of the strength and conditioning field, De Leon challenges us to expand our thinking and perceptions around personal training, while holding true to our values and expertise as coaches. Regardless of your current role in the profession, learn more about how the NSCA can help you grow your career. You can connect with Tara on Instagram: @tara_de_leon_fitness or tara@edgewaterfit.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This brief excerpt from NSCA’s Essentials of Sport Science discusses skill-based key performance indicators (KPIs).

Official Rules for the 2026 NSCA Experience Day Giveaway

Concurrent training (CT), which combines resistance exercise and energy systems conditioning, is the default approach to preparation in high-intensity intermittent (“stop and go”) team sports. This review provides an overview of CT, emphasizing its complexities and challenges in managing fatigue and optimizing performance. These complexities are specifically compounded by the variability in game demands across the season, where the presence of intensified and nonintensified competition periods necessitates a flexible and adaptive training approach. In this context, there are essential training variables to consider, including intensity, volume, session order, and recovery intervals between sessions. In addition, nontraining variables such as travel, sleep, and nutrition play a role in the fatigue experienced while training and competing. These variables interact to influence acute performance and training adaptations and can be strategically adjusted by strength and conditioning practitioners. The aim of this review is to provide a comprehensive understanding of fatigue management for practitioners in team sports, emphasizing the complexities and challenges of CT and offering simplified practical recommendations for adjusting training variables within any given microcycle.

Exercise is increasingly recognized as an effective, nonpharmacological approach for managing both acute and chronic pain. However, accurate pain assessment methods tailored to different exercise settings and populations are essential. This review evaluates existing pain assessment techniques, highlighting self-report measures such as the Visual Analog Scale and Numerical Rating Scale, as well as quantitative measures, such as Pressure Pain Threshold and Conditioned Pain Modulation. These techniques provide valuable insights into the neurophysiological mechanisms behind pain reduction. Although exercise commonly produces a temporary reduction in pain sensitivity known as exercise-induced hypoalgesia (EIH), the effectiveness of this response depends on various factors, such as exercise intensity, psychological state, and pre-existing pain conditions. In addition, exercise itself can sometimes lead to short-term discomfort due to muscle fatigue or delayed-onset muscle soreness. This review offers strength and conditioning providers, as well as researchers, a clear framework for (a) selecting appropriate pain assessment tools, (b) designing research protocols, and (c) customizing exercise interventions for specific populations and pain conditions. By examining self-report and quantitative assessment techniques, along with considerations for data analysis and practical application, this review helps strength and conditioning professionals interpret the literature surrounding EIH and apply practical pain monitoring strategies to guide training and recovery in various populations.

In this episode, Lilly Bernardi, Assistant Strength and Conditioning Coach at Hofstra University, talks to Eric McMahon, the NSCA Coaching and Sport Science Program Manager, about her journey from being an athlete to becoming a coach. Bernardi shares sentiments over losing her senior lacrosse season as a college athlete during the COVID-19 pandemic, and how it has fueled her motivational approach in coaching. The episode highlights the importance of building confidence as a young professional and adopting a growth mindset for career development. Additionally, the conversation delves into social media etiquette for coaches in the age of information sharing. Connect with Lilly on Instagram: @lilly_bernardi1 or by email: lilly.a.bernardi@hofstra.edu| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs