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.

Emily Zaler, Assistant Strength and Conditioning Coach for the National Football League (NFL) Denver Broncos, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the benefits of being persistent and proactively seeking out opportunities in the field. Topics under discussion include working with professional athletes, facing adversity head on, and how no task is too small to show how you can add value to a program. Find Emily on Instagram: @ezaler or Twitter: @EZaler | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

From tactical strength and conditioning to developing the skills to train a specialized group of football kickers, Catherine Wallace shares how growing up in a military family inspired her into coaching. In this episode, Wallace connects with NSCA Coaching and Sport Science Program Manager, Eric McMahon, on how to pursue a tactical coaching career in different branches of the military and public safety. She discusses how earning the Tactical Strength and Conditioning Facilitator® (TSAC-F®) certification led her to pursue the Certified Strength and Conditioning Specialist® (CSCS®), and more ways that involvement with the NSCA has positioned her for career growth. There is also a discussion about “holistic programs” within strength and conditioning, an area that has been popularized, but is perhaps still misunderstood. Listen and learn about the rapidly growing tactical strength and conditioning area of the field, and the mindset needed to thrive as an impactful coach. Connect with Catherine on Instagram at: @tac.coach.cath or by email: catherine.university@hp.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Josiah Igono, Director of Peak Performance for the Texas Rangers Major League Baseball (MLB) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about what defines performance. Topics under discussion include the importance of coaching mental skills, diversifying your skillsets as a coach, and leaving a legacy. Find Dr. Igono on Instagram: @josiahigono or Twitter: @JosiahIgono | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Since 1998, Bryan Mann has dominated strength and conditioning, securing positions at elite collegiate programs and defining research in strength, power, and velocity-based training (VBT). As the Academic Director of Strength and Conditioning at Texas A&M University, Bryan still gets the rewarding chance to shape students like his former athletes, but now, he’s focused on the future. He’s expanding his scope to human performance as a whole — applying his coaching expertise to advance performance across general, special, and tactical populations. Join NSCA Coaching and Sport Science Program Manager Eric McMahon as we follow Bryan’s professional path, including his recent transition to the Aggie’s powerhouse performance staff alongside Bo Sandoval and Tommy Moffit. Plus, explore pioneering research on Parkinson’s, the rise of individualization in VBT, and how to create a “forward” (not backup) plan for career longevity. Connect with Bryan on Instagram @jbryanmann or Twitter/X @jbryanmann | Find Eric on Instagram @ericmcmahoncscs or LinkedIn @ericmcmahoncscs In this episode, you’ll learn about the NSCA Presenter Application process. Apply by May 15 to be considered for 2025 local events and conferences while earning CEUs for your expertise.

National Strength and Conditioning Association (NSCA) Fellows are an accomplished group of professionals whose frequent and sustained contributions to the profession have promoted the goals and activities of the NSCA. The purpose of the Fellowship is to promote excellence and leadership within the NSCA by recognizing high standards and extraordinary professional development.

Lawrence Herrera, owner and founder of LH Performance, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about how strong is strong enough, keeping the training simple, and relating to athletes and coaches.

Andy Galpin, Associate Professor and Co-Director of Center for Sports Performance at Cal State Fullerton, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about the roles of science and technology in sport.

Micah Kurtz, Director of Strength and Conditioning at AC Flora High School talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about high school strength and conditioning, and how to break into the field.

Megan Young, Performance Coach at Auburn University, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about the data revolution and combining science and coaching to validate the “coaching eye.” They also discuss the importance of your professional network, building a strong performance team, and the need to unify the profession.