ACE Health Coach study materials
ACE Health Coach study resources

ACE Health Coach key terms

ACE Health Coach · Get comfortable with the vocabulary.

Transtheoretical Model (Stages of Change)

A behavior change framework describing readiness as a series of stages: precontemplation, contemplation, preparation, action, maintenance, and sometimes termination. Coaches match strategies to the client's current stage rather than pushing action too early.

Related: Precontemplation, Contemplation, Decisional Balance
Precontemplation

The stage in which a person is not yet considering a change within the next several months and may not see the behavior as a problem. Coaching focuses on raising awareness gently rather than prescribing action plans.

Related: Transtheoretical Model (Stages of Change), Contemplation, Motivational Interviewing
Contemplation

The stage in which a person is thinking about making a change but has not committed. Ambivalence is common, so coaches explore pros and cons and strengthen confidence and reasons for change.

Related: Ambivalence, Decisional Balance, Precontemplation
Preparation

The stage in which a person intends to act soon and may take small initial steps. Coaching centers on building a concrete, realistic plan and anticipating barriers before the action stage begins.

Related: Action Plan, Self-Efficacy, Transtheoretical Model (Stages of Change)
Maintenance

The stage of sustaining a behavior change over time, typically six months or longer. Coaching emphasizes relapse prevention, reinforcing routines, and adapting plans to life changes.

Related: Relapse, Relapse Prevention, Action Plan
Relapse

A return to an earlier behavior pattern after a change has begun. It is treated as a normal part of the change process and a source of learning rather than a personal failure.

Related: Relapse Prevention, Maintenance, Lapse
Lapse

A brief, isolated slip back into a previous behavior that does not necessarily undo progress. Distinguishing a lapse from a full relapse helps clients recover quickly without shame.

Related: Relapse, Relapse Prevention, Self-Efficacy
Relapse Prevention

A set of strategies that help a client anticipate high-risk situations, plan coping responses, and recover quickly from slips. It is a core focus once a behavior has been sustained.

Related: Relapse, Lapse, Maintenance
Self-Efficacy

A person's belief in their own ability to perform a specific behavior or succeed in a given situation. Higher self-efficacy predicts persistence, and coaches build it through mastery experiences and encouragement.

Related: Self-Determination Theory, Preparation, Action Plan
Self-Determination Theory

A theory of motivation holding that people are most engaged when their needs for autonomy, competence, and relatedness are met. It explains why internally driven motivation produces more durable behavior change.

Related: Autonomy Support, Intrinsic Motivation, Self-Efficacy
Intrinsic Motivation

Engagement in a behavior because it is personally interesting, enjoyable, or aligned with one's values, rather than for external reward or pressure. It tends to sustain behavior longer than external rewards.

Related: Extrinsic Motivation, Self-Determination Theory, Autonomy Support
Extrinsic Motivation

Engagement in a behavior to obtain an external outcome such as praise, money, or avoiding punishment. It can initiate change but often fades once the external reward is removed.

Related: Intrinsic Motivation, Self-Determination Theory
Motivational Interviewing

A collaborative, person-centered counseling style that strengthens a client's own motivation and commitment. It relies on open questions, reflective listening, and evoking change talk rather than giving advice.

Related: Change Talk, Reflective Listening, Ambivalence
Change Talk

Client statements that favor movement toward a target behavior, such as reasons, need, desire, or ability to change. Coaches notice and reflect change talk to strengthen commitment.

Related: Motivational Interviewing, Reflective Listening, Ambivalence
Ambivalence

The experience of holding conflicting feelings about a behavior, wanting both to change and to keep things as they are. Normalizing ambivalence helps clients explore it without feeling judged.

Related: Motivational Interviewing, Decisional Balance, Contemplation
Reflective Listening

Restating or paraphrasing the meaning of what a client has said to show understanding and encourage elaboration. It is a core coaching skill that keeps the focus on the client's perspective.

Related: Motivational Interviewing, Active Listening, Open-Ended Questions
Active Listening

Fully attending to a client's words, tone, and body language, then confirming understanding through reflection or summary. It builds trust and surfaces the client's real concerns.

Related: Reflective Listening, Open-Ended Questions, Rapport
Open-Ended Questions

Questions that invite explanation rather than a yes or no answer, such as 'What would help most this week?' They encourage exploration and give clients room to think aloud.

Related: Active Listening, Reflective Listening
Rapport

A trusting, comfortable connection between coach and client built through respect, consistency, and genuine interest. Strong rapport makes clients more willing to share honestly and try new behaviors.

Related: Active Listening, Empathy, Unconditional Positive Regard
Empathy

The ability to understand and communicate a client's feelings and perspective without adopting them as one's own. It differs from sympathy, which is feeling pity for another person's situation.

Related: Rapport, Reflective Listening, Unconditional Positive Regard
Unconditional Positive Regard

Accepting and valuing a client as a person regardless of their behavior or setbacks. It creates psychological safety so clients can discuss difficulties without fear of criticism.

Related: Empathy, Rapport, Ambivalence
SMART Goal

A goal written to be specific, measurable, achievable, relevant, and time-bound. This structure turns a vague intention into a clear target the client can track and evaluate.

Related: Action Plan, Self-Monitoring, Goal Setting
Action Plan

A concrete written or verbal commitment describing what the client will do, when, where, and how often. Effective plans are small enough to be realistic and specific enough to be checked.

Related: SMART Goal, Self-Monitoring, Preparation
Self-Monitoring

Systematically tracking one's own behavior, such as logging food, steps, or sleep. The act of recording raises awareness and is itself associated with improved adherence and outcomes.

Related: SMART Goal, Action Plan, Feedback
Decisional Balance

A structured weighing of the perceived benefits and costs of changing versus staying the same. It is especially useful when a client is ambivalent and needs to explore both sides.

Related: Ambivalence, Contemplation, Motivational Interviewing
Autonomy Support

Coaching in a way that honors the client's right to choose, offering options and rationale rather than pressure. It protects intrinsic motivation and reduces resistance.

Related: Self-Determination Theory, Intrinsic Motivation, Motivational Interviewing
Health Coaching

A client-centered partnership in which a trained coach helps a person set and pursue health-related goals using behavior change methods, education, and accountability. Coaches do not diagnose or prescribe treatment.

Related: Scope of Practice, Action Plan, Motivational Interviewing
Scope of Practice

The boundaries of what a professional is trained, licensed, and permitted to do. Health coaches educate and support behavior change but do not diagnose, prescribe, or provide medical nutrition therapy.

Related: Health Coaching, Referral, Medical Nutrition Therapy
Referral

Directing a client to an appropriate licensed professional when a need falls outside the coach's scope. Timely referral protects client safety and respects professional boundaries.

Related: Scope of Practice, Medical Nutrition Therapy
Confidentiality

The ethical and often legal duty to protect a client's private health information from unauthorized disclosure. Coaches should explain its limits, such as risk of serious harm, at the outset.

Related: Informed Consent, Scope of Practice
Informed Consent

Obtaining a client's voluntary agreement to coaching after explaining the process, fees, confidentiality limits, and the coach's qualifications and scope. It should be documented before services begin.

Related: Confidentiality, Scope of Practice
Medical Nutrition Therapy

Individualized nutrition treatment for a medical condition, provided by a registered dietitian nutritionist. Health coaches may support general healthy eating but must refer clients needing this level of care.

Related: Scope of Practice, Referral
Macronutrients

The nutrients the body needs in large amounts to supply energy and building materials: carbohydrates, proteins, and fats. Understanding their roles helps coaches explain balanced eating in plain language.

Related: Micronutrients, Caloric Balance, Fiber
Micronutrients

Vitamins and minerals required in small amounts for normal body function, such as vitamin C, iron, and calcium. They supply no energy but support metabolism, immunity, and tissue repair.

Related: Macronutrients, Dietary Guidelines
Caloric Balance

The relationship between energy consumed from food and beverages and energy expended through metabolism and physical activity. A sustained surplus tends to promote weight gain, while a deficit tends to promote loss.

Related: Macronutrients, Physical Activity Guidelines
Fiber

The indigestible carbohydrate found in plant foods such as vegetables, fruits, legumes, and whole grains. Adequate intake supports digestion, satiety, and heart health.

Related: Macronutrients, Dietary Guidelines
Physical Activity Guidelines

Public health recommendations for movement, generally about 150 minutes of moderate-intensity aerobic activity weekly plus muscle-strengthening on two or more days. Coaches use them as a baseline reference, not a prescription.

Related: Caloric Balance, FITT Principle
FITT Principle

A framework for describing exercise plans by Frequency, Intensity, Time, and Type. It helps coaches discuss activity in a structured, understandable way.

Related: Physical Activity Guidelines, Action Plan
Dietary Guidelines

Evidence-based national recommendations on eating patterns intended to promote health and reduce chronic disease risk. They emphasize varied nutrient-dense foods, fruits, vegetables, whole grains, and limited added sugars and sodium.

Related: Micronutrients, Fiber, Macronutrients