Publications by authors named "B J Gurd"
Purpose: (1) To determine if the blood lactate concentration ([BLa]) response is a repeatable individual trait, and (2) To examine whether threshold-based prescription (THR) reduces interindividual variability in [BLa] response compared to traditional (maximally anchored) exercise prescription (TRAD).
Method: A crossover within-participant repeated measures design was used to assess [BLa] during the TRAD and THR exercise in 17 participants (9 M/8F). Participants initially undertook an incremental test to exhaustion to determine peak work rate (WRpeak), a lactate threshold (LT) test and a critical power (CP) test.
Objectives: To investigate the impact of acute energetic stress (acute HIIE and fasting) on , , , , and in human skeletal muscle.
Methods: The current study performed secondary analyses using muscle biopsy samples from two previously published studies: study 1) leg muscle biopsies from nine men and eight women were obtained pre and 3 h following acute high-intensity interval cycling exercise (HIIE); study 2) leg muscle biopsies were obtained from nine men pre-, during, and post-an 8 h fast with or without 2 h of arm ergometer exercise. RT-PCR was performed on samples from each study to determine the mRNA expression of , , , , and .
Background/objectives: This systematic review aims to explore the role of PERM1 across different organisms, tissues, and cellular functions, with a particular focus on its involvement in regulating skeletal muscle mitochondrial biogenesis.
Methods: This systematic review follows The PRISMA 2020 Statement. We used the Covidence systematic review software for abstract/title screening, full-text review, and data extraction.
The purpose of the current study was to test the hypothesis that individual response classification for surrogate markers of cardiorespiratory fitness (CRF) will agree with response classification for VO. Surrogate markers of CRF were time to fatigue on treadmill test (TTF), time trial performance (3kTT), resting heart rate (RHR), submaximal heart rate (SubmaxHR), and submaximal ratings of perceived exertion (SubmaxRPE). Twenty-five participants were randomized into a high-intensity interval training (HIIT: = 14) group or non-exercise control group (CTL: = 11).
View Article and Find Full Text PDFArticle Synopsis
- The study tested whether high intensity interval training (HIIT) at a threshold above critical power results in no differences in time to fatigue between males and females with similar maximal oxygen uptake.
- Thirteen males and eleven females underwent tests to measure their maximum oxygen uptake and then performed a HIIT session to exhaustion, with physiological responses recorded.
- Results showed no significant differences in time to fatigue or heart rate between sexes, although females had lower deoxygenated hemoglobin levels during the intervals, suggesting that sex does not influence HIIT performance despite individual variability in responses.