Senior Honors Projects, 2020-current
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Date of Graduation
12-14-2024
Publish
yes
Degree Name
Bachelor of Science (BS)
Department
Department of Kinesiology
Abstract
Purpose: To evaluate whether grip strength accurately tracks recovery from lower-body exercise comparable to other physical tests and a blood biomarker. Methods: Six subjects (three males and three females) completed testing for estimated 1-RM, jump squat velocity, grip strength, creatine kinase and leg extension peak torque one day prior to a fatiguing session of 10 sets of squats for 10 repetitions at 60% of estimated 1-RM. Each of these tests, as well as ratings of muscular soreness were performed again 24, 48 and 72 hours after the session of squats. Results: For peak torque, the 24 hours (129.5± 35.0 Nm) (P = 0.03) and 48 hours 134.4 ± 35.4 Nm (P = 0.04) values were significantly different than Baseline. There was a trend for the 72-hour value (135.1± 38.6 Nm, P=0.07) to be lower than Baseline. For average grip strength there was no significant (P = 0.47) main effect for time (Baseline = 40.5±6.1 Kg, 24 hours =39.3±7.4 Kg, 48 hours =39.5±6.2 Kg, 72 hours =39.1±6.6 Kg). For peak jump squat velocity there was no significant (P = 0.17) main effect for time (Baseline=1.35±0.17 msec, 24 hours =1.28±0.18 msec, 48 hours =1.32±0.14 msec, 72 hours =1.35±0.16 msec). For average jump squat velocity the 24 hours value (1.18 ± 0.19 msec, P = 0.04) was significantly different than Baseline (1.29± 0.19 msec) while there was not difference between Baseline and 48 hour (1.26± 0.15 msec, P=0.62), and 72 hours (1.29 ± 0.15 msec, P= 0.76). Soreness was higher 24-hours post-exercise (4.1±0.8, P= 0.009) and 48 hours post-exercise (3.8 ± 1.2, P= 0.007) compared to 72 hours (2.4±1.4). For plasma creatine kinase there was no significant (P = 0.11) main effect for time (Baseline= 190.3±99.0 U/ml, 24 hours= 350.2 ± 119.9 U/ml, 48 hours= 226.3 ± 114.7 U/ml, 72 hours= 239.3 ± 123.7 U/ml). Conclusion: The present study suggests that grip strength is not altered by high volume lower body exercise.
