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Time Course of Neuromuscular, Hormonal, and Perceptual Responses Following Moderate- and High-Load Resistance Priming Exercise
- Source :
- International Journal of Sports Physiology and Performance. 16:1472-1482
- Publication Year :
- 2021
- Publisher :
- Human Kinetics, 2021.
-
Abstract
- Purpose: The aim of this study was to map responses over 32 hours following high-load (HL) and moderate-load (ML) half-squat priming. Methods: Fifteen participants completed control, HL (87% 1RM), and ML (65% 1RM) activities in randomized, counterbalanced order. Countermovement jump (CMJ), squat jump (SJ), saliva testosterone, saliva cortisol, and perceptual measures were assessed before and 5 minutes, 8 hours, 24 hours, and 32 hours after each activity. Results are presented as percentage change from baseline and 95% confidence interval (CI). Cliff delta was used to determine threshold for group changes. Results: SJ height increased by 4.5% (CI = 2.2–6.8, Cliff delta = 0.20) 8 hours following HL. CMJ and SJ improved by 6.1% (CI = 2.1–7.8, Cliff delta = 0.27) and 6.5% (CI = 1.2–11.8, Cliff delta = 0.30), respectively, 32 hours after ML. No clear diurnal changes in CMJ or SJ occurred 8 hours following control; however, increases of 3.9% (CI = 2.9–9.2, Cliff delta = 0.26) and 4.5% (CI = 0.9–8.1, Cliff delta = 0.24), respectively, were observed after 32 hours. Although diurnal changes in saliva hormone concentration occurred (Cliff delta = 0.37–0.92), the influence of priming was unclear. Perceived “physical feeling” was greater 8 hours following HL (Cliff delta = 0.36) and 32 hours after ML and control (Cliff delta = 0.17–0.34). Conclusions: HL priming in the morning may result in small improvements in jump output and psychophysiological state in the afternoon. Similar improvements were observed in the afternoon the day after ML priming.
- Subjects :
- Delta
Saliva
Hydrocortisone
business.industry
Posture
Physical Therapy, Sports Therapy and Rehabilitation
030229 sport sciences
Motor Activity
030204 cardiovascular system & hematology
Confidence interval
03 medical and health sciences
0302 clinical medicine
Anesthesia
Priming Exercise
Time course
Humans
Medicine
Orthopedics and Sports Medicine
Muscle Strength
business
Priming (psychology)
Morning
Hormone
Subjects
Details
- ISSN :
- 15550273 and 15550265
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- International Journal of Sports Physiology and Performance
- Accession number :
- edsair.doi.dedup.....e1a20c887538a088cea24e1ca7fa215b
- Full Text :
- https://doi.org/10.1123/ijspp.2020-0646