Choosing the right personal training certification can be overwhelming, especially with so many options available. Two of the most recognized names in the fitness certification world are ISSA (International Sports Sciences Association) and NASM (National Academy of Sports Medicine). Both organizations offer top-tier certifications that are widely respected across the fitness industry. But when it comes to selecting one, many aspiring personal trainers find themselves asking: Why is ISSA the best to opt for?
This article will provide a comprehensive comparison between ISSA vs. NASM, breaking down key aspects such as cost, course structure, reputation, and overall benefits, while focusing on why ISSA stands out as a top choice for personal trainers.
ISSA vs. NASM: A Quick Overview
Before diving into the deeper comparison, let’s take a quick look at the two organizations:

- ISSA (International Sports Sciences Association) was founded in 1988 and has grown to become one of the largest and most respected certifying bodies in the fitness world. It offers a wide range of fitness certifications, including personal training, strength and conditioning, and nutrition.

- NASM (National Academy of Sports Medicine) has been around since 1987 and is well-known for its scientific and evidence-based approach to fitness education. NASM’s most popular offering is its Personal Trainer Certification (CPT), but it also offers specialized certifications such as Corrective Exercise Specialist (CES) and Performance Enhancement Specialist (PES).
What Makes ISSA Stand Out?
Though both ISSA and NASM are excellent certifications, ISSA offers several unique advantages that make it the best choice for many future personal trainers. Let’s take a closer look at why ISSA may be the right path for you.
1. Affordability

One of the most appealing factors about ISSA is its cost-effectiveness. In comparison to NASM, which can be much more expensive (often ranging from $700 to $2,000 depending on the package).
ISSA’s certification program is typically priced between $600 to $800. This price includes all the course materials, study guides, and access to the online platform.
For many students, cost is a huge deciding factor. ISSA’s certification is an excellent option for those who want to become certified without breaking the bank. For those with tight budgets, ISSA also offers payment plans, allowing you to spread out the cost over a set period of time, making it more financially accessible.
2. Flexible, Self-Paced Learning
ISSA is known for its flexible, 100% online format. This is a major benefit for those who need to work around other obligations, like a full-time job or family commitments. With ISSA, you don’t have to attend in-person classes or stick to a strict schedule. You can take the course at your own pace, learning whenever and wherever it’s convenient for you.
While NASM also offers online learning options, some of its courses require live virtual sessions or fixed deadlines that might not work well for those with busy schedules. ISSA’s self-paced approach is perfect for individuals who want to study at their own speed and balance their education with other responsibilities.
3. Global Recognition and Reach
ISSA has a global presence, meaning that its certifications are recognized internationally. This is ideal if you plan to work as a personal trainer outside of the U.S. or if you want to work with clients from around the world. Whether you’re based in Australia, Canada, or anywhere else, ISSA’s certification is a respected credential that opens doors to a variety of opportunities.
While NASM is well-known in the United States, ISSA’s global recognition allows you to tap into the international fitness market. If you dream of being a digital fitness professional or want to pursue a career in various countries, ISSA’s international accreditation makes it a strong choice.
4. Comprehensive Learning Materials

ISSA provides comprehensive and user-friendly learning materials that are designed to be easily understood, even by beginners. The course is divided into digestible chapters, and students are encouraged to engage with the material through quizzes and assignments. This approach ensures that you not only learn theoretical concepts but also gain practical insights into the fitness industry.
The certification includes an open-book exam, which might seem unusual but actually helps promote deep understanding of the material. Instead of memorizing facts and figures, you’re encouraged to apply your knowledge to real-world scenarios. This open-book format is ideal for those who prefer to learn through exploration rather than strict memorization, making ISSA a more approachable option for many students.
5. Diverse Range of Specializations
ISSA is renowned for offering a wide variety of specializations in addition to its personal training certification. After completing the basic personal trainer program, you can expand your knowledge in areas such as:

- Sports Nutrition
- Youth Fitness
- Corrective Exercise
- Strength and Conditioning
- Online Coaching
These specializations allow personal trainers to diversify their skill set and target niche markets. Whether you want to work with athletes, children, or clients with specific health conditions, ISSA gives you the flexibility to shape your career according to your interests.
By offering so many options, ISSA makes it easier to become a well-rounded fitness professional who can work with a wide range of clients. This is a significant advantage, especially if you want to grow your career by gaining additional expertise in specific areas of fitness.
6. Dedicated Student Support
ISSA offers excellent customer service and student support. As a student, you will have access to a wide range of resources, including study guides, practice exams, and access to instructors who can help clarify difficult concepts. For students who prefer extra support, ISSA provides personalized coaching options to ensure you stay on track.
NASM also offers student support, but some users find that ISSA’s approach is more personalized and approachable. The customer service team at ISSA is known for being quick to respond and genuinely helpful, making your learning experience smoother.
7. Ongoing Education and Career Growth
ISSA doesn’t just offer a certification—it’s committed to supporting your career growth long after you pass your exam. The association offers numerous tools to help you grow as a fitness professional, such as business-building resources, marketing materials, and career placement assistance.
ISSA’s continuing education options are also robust. After earning your initial certification, you’ll have opportunities to further your education through a variety of specialty certifications. These specialized programs can help you continue to expand your knowledge and increase your earning potential over time.
8. No Need for a College Degree
One of the most appealing aspects of ISSA’s personal trainer certification is that it does not require a college degree to enroll. This makes ISSA an excellent choice for people who are interested in becoming personal trainers but do not want to invest in a lengthy, expensive college program. As long as you are at least 18 years old and have a high school diploma or equivalent, you are eligible to enroll.
In contrast, some fitness certifications—though not all—may require a higher level of education or previous experience in the fitness industry. ISSA’s inclusive approach means that anyone with a passion for fitness can become a personal trainer and build a career in the field, regardless of prior education.
9. Customer Satisfaction and Positive Reviews

ISSA consistently receives positive reviews from its graduates. Many past students rave about the quality of the materials, the flexibility of the online learning system, and the practical application of the course content. People appreciate the fact that ISSA’s certification is not only affordable but also provides real value for the money.
On review platforms like Trustpilot, students have praised ISSA for its helpful customer support, easy-to-understand courses, and the fact that it sets them up for success in the real world. NASM, while also highly regarded, tends to receive a bit more mixed feedback, particularly when it comes to the cost and its more rigorous, closed-book exams.
ISSA vs. NASM: A Final Look
Here’s a quick recap of why ISSA stands out as a top choice for many:
- Affordable and Flexible – The low cost and online, self-paced learning format make ISSA a great choice for people with busy schedules or limited budgets.
- Global Recognition – Whether you plan to work in the U.S. or abroad, ISSA’s certification is recognized worldwide.
- Wide Range of Specializations – ISSA offers numerous certifications beyond personal training, giving you the chance to specialize in areas like nutrition, corrective exercise, and more.
- Comprehensive and Beginner-Friendly – ISSA’s course materials are easy to understand and provide practical knowledge you can use immediately in your fitness career.
- Ongoing Support and Education – ISSA is committed to helping you grow as a trainer, offering career support and continuing education to enhance your skills.
While NASM is a reputable certification and a great choice for those seeking a more science-heavy approach, ISSA offers a more holistic, flexible, and affordable pathway to becoming a successful personal trainer.
If you’re looking for an affordable, comprehensive, and globally recognized certification that can grow with your career, ISSA is the best option.
FAQ’s
Why is ISSA more flexible than NASM?
ISSA offers self-paced, online courses with no time limits for completion, providing greater flexibility.
How does ISSA stand out in terms of specialization?
ISSA offers a wide variety of specializations, including nutrition, strength training, and sports conditioning.
Why is ISSA a better choice for those new to fitness?
ISSA’s comprehensive approach makes it beginner-friendly, with a focus on foundational knowledge.
How does ISSA support ongoing learning?
ISSA offers continuous education opportunities, including access to online resources and professional development.
Why is ISSA a more affordable option compared to NASM?
ISSA offers competitive pricing with all-inclusive study materials, while NASM can be more expensive with add-ons.