These General Terms and Conditions (GTC) apply to all contracts between
Kristian Hoffmann
Karl-Kraut-Straße 15
30177 Hannover
E-Mail: moin@kristianhoffmann.de
– hereinafter "Provider" – and the user of the LactateThreshold platform – hereinafter "Customer" – in their version valid at the time of order.
The provider provides a web-based application for analyzing lactate test data. The services include:
The calculated values are based on scientifically sound mathematical models and serve exclusively for training and information purposes.
Lab includes our search interface, editorial presentation, result charts and data tables. Original registry data are available free of charge at ClinicalTrials.gov, a U.S. Government database. Public teasers and a selected result preview do not require a Lab subscription.
Each presentation identifies its source, record update, API dataset timestamp and our modifications. Study sponsors and investigators provide registry information. Source checks establish faithful transfer, not the scientific accuracy of all original claims. NLM and NIH do not endorse or approve our service.
Access grants neither exclusive rights to registry data nor blanket permission to copy protected third-party texts. Statutory rights of use remain unaffected. Reuse must take account of the relevant rights and source conditions.
Changed registry records are checked again. Affected presentations are held when a source difference is detected or current verification is missing. These notices do not restrict customers’ statutory rights or our contractual obligations.
ClinicalTrials.gov · Terms and Conditions ↗The contract is concluded by registering a user account. For paid subscriptions, the contract is concluded by completing the payment process via Stripe.
Prices for Athlete, Coach and Lab, including taxes and the payment interval, are shown before purchase in Checkout. The contractual details confirmed there apply. View plans
Payment is made via the payment service provider Stripe. Accepted payment methods: Credit card (Visa, Mastercard, American Express).
Right of Withdrawal
You have the right to withdraw from this contract within fourteen days without giving any reason.
The withdrawal period is fourteen days from the day of contract conclusion.
To exercise your right of withdrawal, you must inform us
Kristian Hoffmann
Karl-Kraut-Straße 15, 30177 Hannover
Email: moin@kristianhoffmann.de
Phone: 0151 15538987
by means of a clear statement (e.g., a letter sent by post or email) of your decision to withdraw from this contract.
You can also exercise your right of withdrawal online at www.lactatethreshold.online/widerruf-ausueben — we confirm receipt without undue delay on a durable medium.
Consequences of Withdrawal
If you withdraw from this contract, we shall reimburse you all payments received from you without undue delay and not later than fourteen days from the day on which we are informed about your decision to withdraw from this contract. We will use the same means of payment as you used for the original transaction for this reimbursement.
Early start and proportionate amount
We provide you with ongoing access — legally a digital service. For services the right of withdrawal expires only once the service has been performed in full (§ 356 Abs. 5 BGB), which does not happen within fourteen days for a running subscription. Your right of withdrawal therefore remains for the full fourteen days, even if you have already used the premium features. If you expressly requested that we start immediately, you owe a proportionate amount for the period already used should you withdraw (§ 357a BGB); we reimburse the rest.
Model withdrawal form
The initial term is one year. You may give ordinary notice to end the initial term at any time before it expires. Without cancellation the contract continues for an indefinite period; you may then cancel at any time with no more than one month’s notice. Annual advance payment does not create a new annual commitment. Statutory rights, including rights arising from a previously missing cancellation button and extraordinary cancellation, remain unaffected.
Cancellation can be made at any time:
Access continues until the effective contract end. Payments made in advance for subsequent periods are refunded proportionately to the original payment method. The cancellation page is available without signing in. Verträge hier kündigen
The use of the app and the implementation of training recommendations are at the user's own risk.
The provider is liable without limitation for damages resulting from injury to life, body or health as well as for damages caused intentionally or by gross negligence.
For damages caused by slight negligence, the provider is only liable in case of violation of essential contractual obligations, limited in amount to the foreseeable, typically occurring damage.
The law of the Federal Republic of Germany applies, excluding the UN Sales Law. For consumers, this choice of law applies only insofar as the protection granted is not withdrawn by mandatory provisions of the law of the state in which the consumer has his habitual residence.
Last updated: January 2026
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