Self-control failures in physical performance: does mindfulness induction serve as a strategy against the ego depletion effect?

Stocker, Eva; Englert, Chris; Seiler, Roland (8 February 2018). Self-control failures in physical performance: does mindfulness induction serve as a strategy against the ego depletion effect? In: 10. Jahrestagung der sportwissenschaftlichen Gesellschaft der Schweiz (SGS) - "Leistung im Sport" Abstractband 10 (pp. 6-7). Magglingen: Sportwissenschaftliche Gesellschaft der Schweiz

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In sport and exercise contexts, it is highly important to control one’s impulses and behavioural tendencies to meet specific goals (Englert, 2016). Athletes frequently have to deal with several demands which may deplete their limited self-control resources which may in turn negatively affect their subsequent performance in a wide variety of sports-related tasks (e.g., coordinative, psychological and physical tasks; Birrer & Morgan, 2010). Mindfulness meditation may be beneficial for mechanisms involved during self-control exertion, because it supports efficient emotion regulation, attention regulation and executive functioning (Brown & Ryan, 2003; Masicampo & Baumeister, 2007). In our study, we investigated the effects of a short mindfulness exercise on physical performance in a state with temporarily depleted self-control strength (ego depletion; Baumeister, Tice & Heatherton, 1994). We hypothesised that a short mindfulness exercise can compensate - at least partly - for the ego depletion effect procured by a strenuous cognitive task on physical performance.
Methods: We applied a mixed between- (ego depletion: yes vs. no) within- (two times of measurement, 7 days apart; mindfulness: yes vs. no; order counterbalanced) subjects design to test our hypothesis in a sample of N = 34 sport students (18 women; Mage = 20.85, SDage = 1.31). Ego depletion was manipulated via a well-established transcription task. For the manipulation of mindfulness, participants in the mindfulness condition performed a short mindfulness exercise, while participants in the control condition listened to an audio book. As dependent variable, participants performed a strenuous physical exercise (plank exercise) for as long as possible and we measured the respective duration at both times of measurement.
Results: Depleted participants in the mindfulness condition were able to compensate for the ego depletion effect and held the plank position as long as the non-depleted group. On the contrary, ego depleted participants’ performance decreased when listening to the audio book. However, the interaction did not reach statistical significance, F(1, 28) = 2.28, p = .142, n^2 = .08.
Discussion: The Results, at least to some extent, support our hypothesis, indicating that a short mindfulness exercise can help to compensate for ego depletion related performance impairments in sport. Further studies should test longer mindfulness interventions as strategy to deal with ego depletion related impairments.

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