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.

September 22-23,2020 | The conference committee handpicked 12 sessions considered hot topics for 2020.

The National Strength and Conditioning Association (NSCA) is proud to announce the recipients of the organization’s 2024 Career and Service Awards. Given annually, the distinguished Career Awards honor individuals who have made significant contributions to the strength and conditioning community throughout their careers. Additionally, the Service Awards recognize those who have provided exceptional dedication and support to the NSCA’s journals or State and Provincial Director Program. Each winner will be formally recognized at the 2024 NSCA National Conference in Baltimore, MD, this July 10-13.

Learn, participate and network with colleagues at (location) while earning CEUs. Hosted by the state, provincial and regional directors, this local event brings cutting-edge research and application to your backyard.

The NSCA-CPT examination reflects the most current and accepted KSA standards within the health and fitness industries. Further, the examinations may be developed from references that may be in addition to resources listed below. NSCA materials survey important content area, but are not a comprehensive study of the Exercise Sciences.

Meet the winners of the 2026 NSCA Elections, elected to strengthen the organization, support NSCA Members, and advance the strength and conditioning profession.

Colorado Springs, CO – MAJ Donald Bigham and Mark Stephenson named the 2017 TSAC-Facilitator and TSAC-Practitioners of the Year at NSCA’s TSAC Annual Training April 3-6, 2017 in Orlando, FL.

The NSCA-CPT examination reflects the most current and accepted KSA standards within the health and fitness industries. Further, the examinations may be developed from references that may be in addition to resources listed below. NSCA materials survey important content area, but are not a comprehensive study of the Exercise Sciences.

The Strength and Conditioning Editorial Excellence Award is given to members of the SCJ Editorial Board in recognition of their service to the NSCA.