Chilling Out Between Rugby Drills: How Cold Water Affects Performance

Study Overview

Rugby players often push their bodies to the limit, especially in hot conditions. A recent study looked at how cold-water immersion (CWI) between two intense rugby drills affects performance, body responses, and how players feel.

Methodology

• Participants: 10 male athletes
• Trials: Two trials, each involving:
• Two 14-minute simulated rugby drills
• A 45-minute break in between
• During the break, players either:
• Sat in an ice bath (CWI) for 15 minutes
• Sat in a normal room (CONT) for 15 minutes

Findings

Positive Effects of CWI

• Lower Skin Temperatures: After the first drill, players who sat in the ice bath had lower skin temperatures during the recovery period.
• Lower Core Temperatures: During the second drill, these players had lower core temperatures.
• Reduced Exertion: Players felt less exertion during the second drill.
• Better Thermal Comfort: Players reported a better sense of thermal comfort.

Negative Effects of CWI

• Lower Vertical Jump Heights: Players who used CWI had lower vertical jump heights during the second drill.
• Slower Sprint Times: Players had slower 15-meter sprint times during the second drill.
• Increased Bounding Distance: While jogging efforts remained the same, sprint times were slower, and players covered more distance in bounding compared to those who didn't use CWI.

Conclusion

The study suggests that while CWI can help reduce thermal stress and keep players comfortable, it might not be the best choice for maintaining high-intensity performance right after recovery. It's a trade-off between comfort and performance.