The relationship between massage to the equine caudal hindlimb muscles and hindlimb protraction.

This research article investigates the effectiveness of using massages on specific muscles in a horse’s hindlimb to increase both passive and active limb movement. It concludes that massaging certain muscles can significantly enhance a horse’s locomotive function, which can be useful in optimizing performance or rehabilitation procedures.

Objective and Hypothesis

• The aim of this study was to evaluate the impact of massaging certain muscles in the hindlimb of horses on the protraction, or movement, of the limb.
• The researchers hypothesized that when certain hindlimb muscles (specifically the superficial gluteal, semitendinosus, biceps femoris, and semimembranosus muscles) are massaged, this could lead to an increase in both passive and active hindlimb protraction.

Methods

• The research utilized a crossover design where eight horses were randomly split into two groups (A and B), with four horses in each group.
• Group A was given a 30-minute massage, while Group B received a 30-minute sham or fake treatment. After a 7-day “washout” period, the procedure was repeated with group assignments switched (Group A received the sham treatment, Group B received the massage).
• The researchers measured passive hindlimb protraction using a horse-adapted version of the human ‘Sit and Reach test,’ a general muscle flexibility test.
• Active protraction was assessed through 2-dimensional kinematic analysis of stride length.
• The data analysis involved the Wilcoxon signed rank test, with a significance level set at P < 0.05.

Results

• The study found that massaging the posterior limb muscles led to a significant increase in both passive (P=0.01) and active (P=0.01) limb protraction.

Conclusions

• Based on the results, the study reaffirms that massages can enhance the movement of a horse’s hindlimb.
• The application of massage can therefore be seen as valuable in developing strategies aimed at improving a horse’s locomotor function, whether that’s for heightened performance in competition or for effective rehabilitation processes.