short-term impact of volleyball workout on knee cartilage
TRANSCRIPT
![Page 1: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/1.jpg)
Short-Term Impact of Volleyball Workout on Knee Cartilage Thickness
Hsin-Min Wang*, PhD, Jen-Chieh Lai†, MD, Yin-Chou Lin‡, PhD,
Chin-Chih Chiou*, MS, Yi-Wen Chen*, PhD
*National Changhua University of Education†Taichung Armed Forces General Hospital
‡Chang Gung Memorial Hospital
![Page 2: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/2.jpg)
Introduction
• Knee cartilage health is critical to being able to perform activities of daily living
• A main function of articular cartilage is the absorption and redistribution of forces applied to the joint during daily or intensive activities (Ateshian et al 1994)
• Proper mechanical loading is critical to maintain the function of knee cartilage (Jorgensen et al 2017)
![Page 3: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/3.jpg)
Introduction
• Repetitive loading may modify knee articular cartilage macrostructure and potential impact knee cartilage health
• Walking and running created greater medial knee cartilage deformation than control conditions (Harkey et al 2017)
• Suggests that sports activity may impact the cartilage health
• Acute structural responses to explosive sporting activity are not well understood
![Page 4: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/4.jpg)
Purpose
• To determine changes in knee femoral condyle cartilage thickness in response to 30 minutes of volleyball-specific activity
![Page 5: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/5.jpg)
Participants
• 22 healthy division Ι collegiate volleyball athletes
• (19.6 ± 1.1yrs, 77.0 ± 10.8kg, 182.5 ± 5.3cm, 23.1 ± 2.9 kg/m2 )
• With no current orthopedic injury or history of knee surgery in both knees
• Body mass index (BMI) of < 30 kg/m2
![Page 6: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/6.jpg)
Methods
• Longitudinally obtained medial femoral condylar cartilage thickness on both limbs before, immediately after, and one hour after a 30 minutes volleyball workout
• Intratester ICC2,3 = 0.8, SEM = 0.01 mm
![Page 7: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/7.jpg)
Methods
RestPre
US
Volleyballworkout
Post
US
Post
US
30
Minutes
30
Minutes
One hour after workout
• 7 minutes of dynamic warm-up exercise
• 25 receiving, 25 blocking, and 12 spiking
![Page 8: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/8.jpg)
Methods-Cartilage Measures (Middle)
Pre medial femoral cartilage thickness from USD image
Post medial femoral cartilage thickness from USD image
![Page 9: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/9.jpg)
Statistical Analysis
• Two-way repeated measures ANOVA examined the differences in right and left knees femoral condyle cartilage thickness before, immediately, and an hour later of 30 minutes volleyball workout
![Page 10: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/10.jpg)
Results
Left Limb (mm) Right Limb(mm)
Medial Femoral Cartilage Regions
Pre USD measure 1.7 ± 0.2 1.6 ± 0.2
Immediate USD measure 1.8 ± 0.3* 1.8 ± 0.3*
One hour USD measure 1.6 ± 0.2 1.6 ± 0.2
• Statistically different (P <.05) between pre-workout to immediately post-workout and between immediately post-workout to an hour later of post-workout
![Page 11: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/11.jpg)
Results
• Significant main effect of time points on knee cartilage thickness, F (2,42) = 40.599, p <.001
• Knee cartilage thickness increased from pre-workout to immediately post workout (1.6 ±0.2 mm Vs 1.8 ± 0.3 mm, p ≤.001)
• Knee cartilage thickness decreased from immediately post workout to an hour post-workout (1.8 ± 0.3 mm Vs 1.7 ± 0.2 mm, p ≤.001)
![Page 12: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/12.jpg)
Results
• No significant main effect of limb on knee cartilage thickness, F (1,21) = 3.127, p =.092
• The left knee cartilage thickness was similar with right limb
• No interaction between limb and time points on knee cartilage measures, F (2,42) = 1.684, p =.198
![Page 13: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/13.jpg)
Conclusion
• After 30 minutes volleyball workout, middle region of knee cartilage thickness was thicker than pre-workout and was recovered an hour later after workout
• This work suggests that volleyball workout induced short-term morphologic changes in knee cartilage
• Ultrasound is a reliable modality to monitor medial cartilage deformation
![Page 14: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/14.jpg)
Future Goal
• To investigate how long-term volleyball workout could impact cartilage health
• To investigate how other high impact activities may impact the cartilage health
![Page 15: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/15.jpg)
Conflict of Interest
• This work is funded by the Ministry Science and Technology (MOST) (MOST 109-2410-H-018-023)
![Page 16: Short-Term Impact of Volleyball Workout on Knee Cartilage](https://reader031.vdocument.in/reader031/viewer/2022012920/61c8c64df77b1a42b07e9724/html5/thumbnails/16.jpg)
Acknowledgments
• All my co-authors
• NCUE faculty
• UNCG faculty