Is it better to exercise alone or with your club mates?

Dr Mark Homer, GB Rowing Team Head of High Performance Science & Medicine, reviews a relevant survey to discover whether it’s actually better to train on your own, rather than with other people

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(Simon Way)

An interesting study from the Institute of Cognitive and Evolutionary Anthropology (ICEA) in Oxford, examined the effect of rowing on a rowing machine in synchrony or alone and how it affects levels of pain threshold. The results may affect whether you choose to train in the garage on your own, or ‘down the club’ with the rest of the crew.

The study

Emma Cohen et al (2010) recruited the Oxford University BC squad and asked them to complete four separate 45 minute ergometer training sessions at the same power output, within two weeks. The intensity is not reported, but given the length and the need to replicate the power output four times, I assume it was relatively ‘steady-state’.

In the two sessions in week one, the first was completed alone, the second in synchrony with five other participants. The same two sessions were replicated in week two.

Immediately before and after each session, the athletes were subjected to a ‘pain threshold’ test which involved a blood pressure cuff being inflated around their upper arm until they felt discomfort. The level of pressure was reported and compared across trials.

Why measure pain?

Our ability to tolerate pain is related to the release of endorphins – chemicals produced by the central nervous system that lead to feelings of euphoria, and have mild analgesic effects.

You will have heard the expression ‘runners high’ that people (sometimes) experience after training, although it’s not limited just to running. Therefore, this study uses pain threshold as a surrogate marker of the rower’s endorphin levels and how they are affected by training alone or as part of a group.

The results

Firstly, the study results suggest that pain tolerance (and assumed endorphin levels) were higher than resting levels after all exercise sessions – supporting the notion of a post-exercise ‘buzz’. Secondly, there was no difference in results between the two individual sessions in weeks one and two. This means that there was no ‘learning effect’ due to the order of sessions. Thirdly, and probably most interestingly, there was a significant increase in pain threshold following the group session when compared to the individual training in both weeks.

What does this mean for you?

The authors conclude that, in this study, training as part of a group significantly increased pain thresholds. They suggest that this was due to synchronicity of the activity increasing endorphin release. In other words, a controlled training situation was a little easier when done with others due to an increase in ‘natural morphine’ and associated reduction in pain.

This result tallies with other research that has demonstrated that synchronous activity (such as laughing, singing and walking) increases the release of endorphins. Interestingly, the discussion also mentions the positive effect of group-induced endorphin release on social bonding within mammals.

This study tested a small cohort, and the authors do acknowledge some distinct individual differences within the two groups. For instance, one athlete’s pain tolerance increased far beyond the average following one of the group sessions, while three individuals had a marked reduction in tolerance.

It would have been nice to have more detail regarding the actual training session completed (such as the intensity) and (although less practical) some more direct measures of the physiological responses to exercise during the different conditions.

In conclusion, this research indirectly suggests that training with others – particularly ‘in-time’ (a fairly common goal with rowers) can help you to get through some sessions, and increase social bonding with your club mates, before you even get to the pub!

Follow Mark Homer on Twitter – @markrhomer