The EMG, NIRS, and RPE responses to two turn transition techniques in alpine skiing

Autor: John G. Seifert, Ronald W. Kipp, Shannon Griffin, David Graham

Publikováno v: JSAMS Plus, Vol 2, Iss , Pp 100037- (2023)

Summary: Objective: Two techniques facilitate the transition in an alpine ski turn, extension (EXT) and flexion (FLEX). The purpose of this study is to compare NIRS, EMG, and RPE responses between EXT and FLEX in expert level skiers. Design: 24 Profe

Externí odkaz: https://doaj.org/article/eb9aeed3e61f435b8e3916234f60b79c

Effect of Acute Administration of an Herbal Preparation on Blood Pressure and Heart Rate in Humans

Autor: John G. Seifert, Aaron Nelson, Julia Devonish, Edmund R. Burke, Sidney J. Stohs

Publikováno v: International Journal of Medical Sciences, Vol 8, Iss 3, Pp 192-197 (2011)

Confusion and controversy exist regarding the cardiovascular effects of dietary supplements containing caffeine and Citrus aurantium (bitter orange) extract. The primary protoalkaloidal ingredient in bitter orange extract is p-synephrine which has so

Externí odkaz: https://doaj.org/article/b918a29efc8f4edb932c2096c453a143

Recovery benefits of using a heat and moisture exchange mask during sprint exercise in cold temperatures

Autor: John G Seifert, Jeremy Frost, John A St Cyr

Publikováno v: SAGE Open Medicine, Vol 5 (2017)

Objectives: Breathing cold air can lead to bronchoconstriction and peripheral vasoconstriction, both of which could impact muscular performance by affecting metabolic demands during exercise. Successful solutions dealing with these physiological chan

Externí odkaz: https://doaj.org/article/060a2c23b57641ff8ba13adadc8cd27d

Alpine Skiing With total knee ArthroPlasty (ASWAP): symmetric loading during skiing

Autor: Thomas Stöggl, Birgit Pötzelsberger, John G. Seifert, Erich Müller, Stefan Lindinger, Peter Scheiber, C. Fink

Publikováno v: Scandinavian Journal of Medicine & Science in Sports. 25:60-66

The aim of this pilot study was to determine the pressure distribution, symmetry of load between operated (OP) and non-operated (NOP) leg, and pain level during alpine skiing in participants with unilateral total knee arthroplasty (TKA). The response

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7848e96fd0d40eb25dcaa6188f4c0222
https://doi.org/10.1111/sms.12476

The influence of D-ribose ingestion and fitness level on performance and recovery

Autor: Allison Brumet, John G. Seifert, John A. St. Cyr

Publikováno v: Journal of the International Society of Sports Nutrition
Journal of the International Society of Sports Nutrition, Vol 14, Iss 1, Pp 1-6 (2017)

Background Skeletal muscle adenosine triphosphate (ATP) levels are severely depleted during and following prolonged high intensity exercise. Recovery from these lower ATP levels can take days, which can affect performance on subsequent days of exerci

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f1b91ab7223f2dde3fa4757a729045d
https://doi.org/10.1186/s12970-017-0205-8